Infinitive

Non finite verb
Collection
zero Useful+1
zero
synonym infinitive (infinitive) generally refers to the infinitive of a verb
The infinitive is Non finite verb stay English grammar In Chinese, the infinitive is a kind of verb without Inflection Thus it does not indicate a form of person, quantity or tense. It is called infinitive because the verb is not limited, or not Part of speech change Limitations. The infinitive belongs to Non finite verb Form.
However, in some languages (e.g Portuguese )There are infinitive forms influenced by tense, person and quantity. Some languages have no infinitives at all, such as Arabic Bulgarian And modern Greek
In the course of English learning, the infinitive Present tense It is called "dictionary word" because it is generally used as the Prefix
The infinitive can be used as anything in a sentence except the predicate Sentence element , but it is a verb after all, so it has the attribute of a verb.
The infinitive and its phrases can also have their own object adverbial , although Infinitive Grammatically, there is no ostensibly direct subject, but the meaning it expresses is an action, which must be issued by the agent (the user of the verb). This agent (the user of the verb) is called Logical subject
Chinese name
Infinitive
Foreign name
infinitive
Properties
Non finite verb
Meaning of expression
action

Basic Introduction

Announce
edit
For English, most of the words with infinitives are verbs indicating the future (things not done), such as "intend", "plan", "hope", "will do something", etc. It is also different from the infinitive expression, Present participle Indicates ongoing, general or frequent behavior.
Note that the infinitive of the verb in manage to do indicates what has been done.

definition

voice A term used to describe the relationship between a verb and its subject. When the subject is the initiator (or one of them) of an action, it is called active
If the infinitive Logical subject It is the receiver of the action represented by the infinitive. The infinitive usually uses passive Form. For example:
It's a great honor to be invited to Mary's birthday party
It was impossible for lost time to be made up subject
I wish to be sent to work in the country object
Can you tell me which is the car to be repaired? (infinitive as attribute)
My work is to clean the room every day Predicative
In the There be structure, the infinitive modifying the subject can be either passive or active For example:
There are still many things to take care of (to be taken care of).
But sometimes the two forms express different meanings, such as:
There is nothing to do now.( We have nothing to do now.)
There is nothing to be done now.(We can do nothing now.)

form

(1) General formula: Present tense A verb used to express, sometimes in conjunction with Predicate verb The actions expressed occur at the same time, sometimes after the action of the predicate verb. Generally: verb+to do something
He seems to know this.
I hope to see you again.=I hope that I'll see you again.
(2) Perfect form: the action indicated occurs before the action indicated by the predicate verb.
I'm sorry to have given you so much trouble.
He seems to have caught a cold.
(3) progressive aspect : indicates that the action is in progress, and Predicate verb The actions indicated occur simultaneously.
He seems to be eating something.
(4) Complete progressive:
She is known to have been wreaking on the problem for many years.
Generally, to do is added after the verb expressing emotion future

Interrogative words

Interrogative words Who, what, which, when, where, where, how can be formed by connecting infinitives Infinitive phrase , as subject, object, predicative, etc. For example:
①When to leave for London has not been decided yet. (The infinitive is the subject in the sentence)
②Mr. Smith didn't Know what to leave or stay there
③I asked Professor Xu how to learn English well. (infinitive in sentences Direct object
④The question was where to get the medicine needed. (infinitive in sentence Predicative
In the above example sentence Interrogative words +The infinitive part can be converted into the corresponding a clause Form. For example: ① When we shall leave... ③... how I
could learn……
The verbs often used in this structure are: consider, decide, discover, explain , find out, forget, head, know, learn, observe, understand, wonder, etc.

As subject

When the infinitive of the verb is the subject, the predicate verb of the sentence is usually singular, and its positions are as follows:
(1) Put the infinitive at the beginning of a sentence. For example:
To get there by bike will take us half an hour.
To make up for lost time is not possible.
To lean out of The window is dangerous.
To save money now seems impossible.
(2) Use It as formal subject , put the real subject infinitive after the sentence, often used in the following sentence patterns. For example:
① It+is+noun+to do
It's our duty to take good care of the old.
It is an offence to drop litter in the street.
②It takes sb+some time+to do
How long did it take you to finish the work? How long did it take you to finish the work?
③ It+be+adjective+for/of sb+to do
It is difficult for us to finish writing the composition in a quarter of an hour.
It is stupid of you to write down everything ( that )The teacher says. It is foolish for you to write down everything the teacher says.
④ It seems (appearances)+adjective+to do
It seemed impossible to save money.
In sentence pattern ③, adjectives are often used to express objective situations, such as: difficulty, easy, hard , important , impossible , necessity, etc; In the second example sentence of sentence pattern ③, careless is often used, clever ,good, foolish , honest , kind,lazy,nice,right, silly , stupid, wise and other words expressing praise or criticism. Sb before infinitive can be regarded as its logical subject. This sentence pattern is sometimes equivalent to Sb be+adjective+to do sentence pattern, such as: It's kind of you to help me with my English= You are kind to help me with my English.
⑤ It+infinitive structure can be located after believe/consider/discover/expect/find/hint and wonder
He thought it would be safer to go by train.
He will find it is hard to make friends.
⑥ The infinitive perfect can also be the subject of a sentence
To have made the same mistake twice was unforgivable.
It is better to have loved and lost than never to have loved at all.
(3) Example
(1) It's easy (for me) to do that
easy,  difficult, hard, important, possible, impossible, comfortable, necessary, better;
the first,  the next, the last, the best,  too much,  too little, not enough
It's so nice to hear your voice.
It's necessary for you to lock the car when you do not use it.
(2) It's very kind of him to help us.
Kind,  nice, stupid, rude, clever, foolish,  thoughtful , thoughtless, brave,  considerate (Considerate), Sally selfish Selfish
example sentence:
It was silly of us to believe him.
It seems selfish of him not to give them anything.
Note: (1) Others Copula For example, look, appearance can also be used for this sentence pattern
(2) Infinitive as Sentence element The verb is singular.
(3) There is another infinitive in the sentence where the infinitive is the subject Predicative You cannot use the sentence pattern It is... to
(Yes) To see is to believe.
It is to believe to see

whom

(1) The following verbs can only be followed by infinitives object
afford (Affordable), agree (Agreed), aim (Strive to achieve), appear (appears), arrange (Arrangement), attempt (trying to), care (Want to), choose (Decision), claim (claimed), condescend (condescending), consent (permission), decide, demand (Required), determine (Determined), endeavor (endeavoring), expect (expectation), fail, help, hesitate, hope, learn, manage, neglect (negligence), offer (initiative), plan, prepare, pretend (pretend), proceed, promise, prove (Proof), refuse, resolve (solve), seem, swear, tend, threatened, undertake, volunteer (do it voluntarily), vow (swear), want (want), wish
give an example:
The driver failed to see the other car in time.
The driver didn't see the other car in time.
I happen to know the answer to your question.
I happen to know the answer to your question.
(2 )Verbs+ Interrogative words +Infinitive
decide,know,consider forget,learn, remember , show,understand,see,wonder,hear,find out,explain,tell
Please show us how to do that.
There are so many kinds of tape-recorders on sale that I can't Make up my mind which to buy recorder I can't decide which one to buy.
be careful: Interrogative words When an infinitive is used as an element in a sentence, the predicate verb is singular.
The question is how to put it into practice.
The question is how to put it into practice.
(3) When Complex object When the object in is an infinitive, use formal object It replaces the infinitive and places the infinitive in the complement Then, the sentence pattern of subject+verb+it+complement+to do. For example:
We think it quite important for us to learn a foreign language well.
He feels it his duty to help the poor.
I find it difficult to learn English well.

Complement

(1) Verb+object+infinitive (to do)
Common verbs: advise, allow, believe, cause challenge ,compel,declare, encourage ,forbid,force, find, hire,induce,instruct,invite,like,order,permit,persuade,remind,request,require,select,send, suppose ,tell,train, urge
example sentence:
a. Father will not allow us to play on the street.
Father won't let us play in the street.
b. We believe him to be guilty.
We believe that he is guilty.
(2) The infinitive structure of to+be, as complement Verbs for.
Common verbs: Acknowledge, believe, consider, think, declare (claim), discover, fancy Feel, find, guess, judge, image, know, provide, see, show, assume, take, understand
We consider Tom to be one of the best students in our class.
We think Tom is one of the best students in the class.
(3) To be+adjective
Common verbs: See, appear, be said, be supported, be trusted, be thought, be known, be reported, hope, wish, desire, want, plan, expect, mean
The book is believed to be uninteresting.
People think this book is boring.
(4)  there be +Infinitive
Common verbs: believe, expect, intend ,like,love,mean, prefer ,want,wish,undrstand
We didn't expect there to be so many people there.
Some verbs need the phrase as complement , such as regard , think believe,take,consider.
We regard Tom as our best teacher.
Mary took him as her father.
(5) bald Infinitive construction complement
The bald infinitive, that is, the infinitive without "to" grammatical function Usually used as an object in a sentence complement Object complement )。
Common verbs that use bald infinitives as object complements are as follows:
The pithy formula: "five looks, three ambassadors", "two listening, one feeling" should be kept in mind. If the "guest complement" changes to the "main complement", the "to" word of the main complement cannot be absent. The verb let is an exception, with no object complement or main complement "to". explain:
Five views ---- see/watch/notice/observe/book at; Three ambassadors ------ have/make/let; Hear/listen to; Feel.
I often see him go to school on foot (bald infinitive Object complement ) He is often seen to go to school on foot. (The infinitive form is Subject complement Let him try again---- He is let try again

Special Usage

Available after Find participle Make up for guests, or add first formal object , add an adjective, and finally add the infinitive with "to". Find can also be followed by a clause. Such verbs also include get and have.
I found him lying on the ground.
I found it important to learn.
I found that to learn English is important.

adj

The infinitive is used as a predicative to express concrete actions or future actions; Gerund It is used as a predicative to express abstract general behavior.
①To be kind to the enemy is to be cruel to the people.
②My chief purpose is to point out the difficulties of the matter.
③What I would suggest is to put off the meeting.
When both the subject and the predicative are infinitives, their meanings are conditions and results (example ①). When the subject is a noun phrase (example ②) with aim, duty, hope, idea, miss ke, plan, purpose, suggestion as the central word, or a nominal clause (example ③) guided by what, the infinitive describes the content of the subject.
④Our work is serving the people.
⑤What he likes is taking a walk after supper.
⑥The story told by Mr.Wang is interesting.
④ ⑤ Sentence gerund can be used as a predicative and can be converted to the subject, such as Serving the people is our work, while ⑥ sentence is Present participle As a predicative, it explains the nature and state of the subject. The present participle has various characteristics of adjectives. In addition, the gerund as a predicative should be distinguished from the progressive tense.

Adverbial

(1) Objective adverbial
To... only to, in order to, so as to, so (such)... as to
He ran so fast as to catch the first bus.
I come here only to say good bye to you.
(2) As an adverbial of result, it should be placed at the end of the sentence to indicate something unexpected.
What have I said to make you angry.
He searched the room only to find nothing.
(3) Table Reasons
I'm glad to see you.
Typical examples
The chair looks rather hard,but in fact it is very comfortable to ___.
A. sit B. sit on C. be seat D. be sat on
Answer: B. If the infinitive is intransitive verb , followed by the necessary prepositions.
When a verb is used with a preposition, it is often at the end of the "adjective+infinitive" structure.

Attributive

1. Infinitive as attribute
The infinitive is used as an attribute in a sentence and placed on the modified noun or After pronouns. For example:
①The next train to arrive is from Washington.
②Do you have anything to be taken to your sister?
③Do you have anything to say on the question?
④Would you please give me some paper to write on?
⑤My wish to visit France has come true at last.
Infinitive phrase Attributive and quilt Modifier The following relationship is indicated between:
(1) It indicates the future action (example ①).
(2) Between the modifier and verb-object combination , if it is an intransitive verb, you need to add a preposition (example ④).
(3) When there is a verb object relationship with the modified word, and there is a logical subject predicate relationship with other words in the sentence, although there is a passive meaning, it is still used active (Example ③); If there is only a verb object relationship, but no logical subject predicate relationship, you need to use passive (Example ②).
(4) When the infinitive is used as an attribute, it can generally be converted into an attribute a clause , Example ① to arrive=that will arrive.
Note: If the infinitive is an intransitive verb or the noun or pronoun modified by the infinitive is the place or tool of the infinitive action, the infinitive should be followed by a corresponding preposition. For example:
He found a good house to live in.
The child has nothing to world about.
What did you open it with? What do you use to open it?
If the infinitive modifies time, place, and way, the preposition can be omitted:
He has no place to live.
This is the best way to work out this problem.
If the noun modified by the infinitive is the infinitive action receiver, the infinitive can be active or active Passive
Have you got anything to send? Do you want to send anything?
Have you got anything to be sent? Do you have anything to send?
If the infinitive modifies time, place, and way, the preposition can be omitted:
He has no place to live.
This is the best way to work out this problem.
If the noun modified by the infinitive is the infinitive action receiver, the infinitive can be active or passive:
Have you got anything to send? Do you want to send anything?
Have you got anything to be sent? Do you have anything to send?

Related ellipsis

(1) Modal verb (Except for "ought", "ought to" means "should". It is a modal verb with only one form, followed by the infinitive, and "to" cannot be omitted. There is no change in person and number, followed by Verb prototype It can represent the present, the future or the past and the future adverbial of time or context decision. For example: They ought to come tomorrow):
(2) Causative verb let,have,make:
(3) Sensory verb See, watch, look at, notice, observe, hear, listen to, smart, feel, find, etc.
Note: On passive In, to cannot be omitted.
stay Causative verb Except get sb. to do sth
I saw him dance.
=He was seen to dance.
The boss made them work the whole night.
=They were made to work the whole night.
(4) Would rather indicating personal will or inclination, had better ,might(just) as well : rather than.
Rather than ride on a crowded bus,he always prefers to ride a bike.
(5) Why… / why not…:
(6) Help can be with or without to, help sb (to) do sth:
(7) But and except When the verb "do" precedes "but" do ", the infinitive without" to "is used for the verb appearing after" do ".
(8) Two infinitives connected by and, or and than, the second to can be omitted:
(9) Usually in discover, imagine,suppose,think,understand Equivalency After that, to be can be omitted:
He is supposed (to be) nice.
(10) When "but" is used as a preposition (except for "....") and followed by an infinitive structure, if the predicate verb part in front contains the form of "do", the infinitive after "but" should omit "to", or "to".
He wants to do nothing but go out.
He wants to believe anything but to take the medicine.
(11) When two or more infinitive phrases are connected by the conjunction and, but, or, the latter infinitive symbol to is often omitted. However, it cannot be omitted when it refers to comparison and contrast relationship.
He wants to move to France and marry the girl.
The purpose of new technologies is to make life easier,not to make it more difficult.
(12) When the infinitive is used as a predicative, it usually takes to, but if the predicate contains various forms of do, the symbol to can be omitted.
We've missed the last bus.All we could do now is walk home.

Negative form

Tell him not to shut the window…
She pretended not to see me when I passed by.

Special sentence pattern

so as to
(1) Indicate the purpose; its Negative form So as not to do.
Tom kept quiet about the accident so as not to lose his job.
Go in quietly so as not to wake the baby.
(2) So kind as to
Would you be so kind as to tell me the time? Excuse me, what time is it now.
2. "Why not+verb prototype" means to make suggestions to someone
"Why not......?" "Why not......?"
For example:
Why not take a holiday?
Why not go on holiday?
3. It's for sb. and It's of sb
(1) For sb. It is often used to express the characteristics of things and adjectives of objective form, such as easy, hard, difficulty, interesting, impossible, etc.:
It's very hard for him to study two languages.
(2) The sentence pattern of of sb generally uses adjectives to express the character, moral character, subjective feelings or attitudes, such as good, kind,nice,clever,foolish,right。
It's very nice of you to help me. You come It's very kind of you to help me.
Distinguishing method of for and of:
Use the pronoun after the preposition as the subject and the adjective before the preposition as the Predicative Make a sentence. If it is reasonable to use of, then use for. For example:
You are nice.
He is hard
4. The special sentence pattern of infinitive too... to
(1) Too... to
He is too excited to speak.
——Can I help you
——Well, I'm afraid the box is too heavy for you to carry it,but thank you All the same. The box is too heavy for you to carry. Thank you very much.
(2) If there is before the too Negative word , the whole sentence uses a negative word to express affirmation, and the word after too expresses a euphemistic meaning, meaning "not too".
It's never too late to mens
It's never too late to mend.
(3) When there are only, all, but in front of the tool, it means: "very..." equals very
I'm only too asked to be able to help you.
He was but too eager to get home Really want to Go home.

Distinction

Difference between infinitive and preposition "to"
To can be used in two ways:
One is infinitive+ Verb prototype
One is preposition+noun gerund. To is the second one in the following usage, that is, to+noun/gerund:
Admit to admit, satisfy to admit, be admitted to learn Habitual Be used to get used to, stick to persist, turn to start, devote Oneself to devote, be devoted to devote, look forward to hope, pay attention to attention
Preposition but, except, sides+to do (do)
In this sentence pattern, if the preposition is preceded by the verb do, it should be followed by the infinitive without the to; If there is no do, it is connected to the to infinitive, that is, with do without to, with to without do. For example:
The enemy soldiers had no choice but to give in.
On Sunday afternoon I had nothing to do but watch TV.

Differential connection

1 Difference between gerund and infinitive
Gerund The expression is: state, nature, mood, abstraction, regularity, what has happened; The infinitive expresses the purpose, result, reason, concrete, one-time, and will happen.
2 Connected with infinitive or gerund, with the same meaning
3 In the following cases, the infinitive is generally used:
① Have, like, love When there is would (should) before it, such as: I'd like to have a cup of coffee
② When the predicate verbs begin, continue, start, etc. are progressive, such as The students are starting to work on the difficult maths problem.
③ Begin, continue, start, know, understand, etc State verb When used together, for example, I soon became to understand what was happening
4. Advise, allow, enclosure, forbid, permit and other verbs are followed by gerunds as objects or infinitives as object complements. For example:
Our teachers don't permit our/us swimming in the lake.
Our teachers don't permit us to swim in the lake.
4. When some verbs are followed by infinitives or gerunds, their meanings differ greatly, and they should be used according to the sentence context.
① Forget, remember, and reget are followed by infinitives to indicate present or future actions, and gerunds to indicate that actions have occurred. For example:
Don't forget to post the letter for me.
Have you forgotten meeting her in Beijing Airport?
Remember to close the windows before you leave.
I remember writing him a letter a year ago.
We regret to tell you that all of you are not invited to attend the meeting.
They regretted ordering these books from abroad.

Semantic difference

catalog
1 stop to do
2 forget to do
3 remember to do
4 regret to do
5 cease to do cease doing
6 try to do try doing
7 go on to do go on doing
8 fear to do
9 interested to do
10 mean to do
11 begin/start to do
forget doing/to do
Forget to do. (Not done)
Forget doing. (done)
The light in the office is still on. He forgot to turn it off. (No action to turn off the lights)
He forgot turning the light off. (The lamp has been turned off)
Don't forget to come tomorrow. (The action to come is not performed)
remember doing/to do
Remember to do
Remember doing
Remember to go to the post office after school.
Don't you remember seeing the man before? Don't you remember seeing that man before?
regret doing/to do
Regret to do. (Not done)
Regret doing. (done)
I regret to have to do this, but I have no choice.
I don't regret telling her what I thought.
cease doing/to do
Cease to do for a long time, or even stop doing something forever.
Cease doing stops doing something for a short time and will continue to do it later.
That department has ceased to exist forever.
The girls ceased chatting for a moment when their teacher passed by. Girls When the teacher passed by, he stopped to chat.
try doing/to do
Try to do.
Try doing experiment, try to do sth.
You must try to be more careful.
I tried gardening but didn't succeed.
go on doing/to do
Go on to do one thing and then do another.
Go on doing.
After he had finished his math, he went on to do his physics.
Go on doing the other exercise after you have finished this one
be afraid doing/to do
Be afraid to do is a subjective reason for not doing something, meaning "afraid";
Be afraid of doing. Doing is objectively caused, meaning "afraid, afraid".
She was afraid to step further in grass because she was afraid of being bitten by a snake.
For fear of being bitten by snakes, she did not dare to take another step in the grass.
She was afraid to wake her husband.
She was afraid of waking her husband.
be interested in doing/to do
Interested to do.
Interesting in doing.
I shall be interested to know what happens. (Want to know)
I'm interested in working in Switzerland. Do you have any idea about that
I am right Switzerland Interested in work. Have you thought about it? (an idea)
mean doing/to do
Mean to do
Mean doing means
I mean to go, but my father would not allow me to.
To raise wage means increasing purchasing power purchasing power
begin(start) doing/to do
begin/start to do sth
begin/start doing sth.
(1) When talking about a long-term activity or starting a habit, use doing
How old were you when you first started playing the piano?
(2) Begin, start uses the continuous tense, and the following verb uses the infinitive to do
I was beginning to get angry。 I started Arise Anger comes.
(3) At prompt, end, begin, start, then know, understand, realize this Quasi verb The infinitive to
do。
I begin to understand the truth。
I began to understand the truth.
(4) When the object is the subject
It began to melt.
2. Tense and voice of infinitive
(1) Tenses
① General form: the action expressed by the infinitive general form of the verb occurs in Predicate verb Later, sometimes it means simultaneous occurrence, such as:
I hope to become a university student this year
We often hear Dick play the piano in the next room
② Perfect form: the action indicated occurs before the action indicated by the predicate verb. For example:
I'm sorry to have kept you waiting.
We are too young to have seen the old society.
③ Progressive form: the action and predicate verb occur at the same time. For example:
The teacher happened to be correcting our papers when I came in.
They seemed to be discussing something important.
(2) Voice
If the infinitive Logical subject It is the receiver of the action represented by the infinitive. The infinitive usually uses the passive voice, such as:
It's a great honor to be invited to Mary's birthday party
It was impossible for lost time to be made up
I wish to be sent to work in the country
Can you tell me which is the car to be repaired (infinitive as attribute)
He went to the hospital to be examined
In the There be structure, the infinitive that modifies the subject can be passive or active, such as: There are still many things to take care of (to be taken care of). But sometimes the two forms express different meanings, such as: They are nothing to do now ( We have nothing to do now.) There is nothing to be done now. (We can do nothing now.)
3. Tense and voice of gerund
(1) Tenses
① General form: the action represented by the general form of gerund can be general, or it can occur simultaneously with the predicate verb, or before or after the predicate action, such as:
We are interested in collecting stamps.
I shall never forget seeing the Great Wall for the first time.
We are not afraid of dying.
② The action represented by the perfective occurs before the predicate verb, such as:
Imagine having traveled on the moon.
We were praised for having finished the work ahead of time.
① If the logical subject of a gerund is the receiver of the action expressed by the gerund, the gerund should use the passive voice. The passive voice of the gerund can be divided into the general form and the perfect form, such as:
The young man came in without being noticed.
He prided himself on having never been beaten in class.
② Some gerunds after verbs use the active form but express the passive meaning, such as:
The bike needs repair.
If a thing is worth doing, it is worth doing well.
4. In spoken English, in order to avoid repetition, "to" is often used to replace the infinitive structure. Sometimes, "to" can even be omitted, such as:
①-Did you go to visit the Great Wall
-No, I wanted to, but there wasn't enough time.
②-Would you like to come to a party
-I'd love to.
③-Don't make any mistakes in your homework, will you
-I'll try not to.
④-Try to be back by 12,won't you
-OK, I'll try.
In addition, be going to , ought to, used to, etc. are also commonly used in this structure.
5. In the question caused by why, omit "to", such as:
Why spend such a lot of money
Why not wait for a couple of days
6. When two or more infinitives with the same function are used in parallel, only "to" is added before the first infinitive, such as:
It's quite necessary for us to read more and have more practice.
7. "to" is a preposition in the following phrases, followed by Gerund Or noun form, such as:
Devete... to, face up to, look forward to, object to, take to; Start to engage in certain activities), be used to, etc.

progressive aspect

form
To be+present participle
He seems to be following us.
usage
① For auxiliary verb after
He must be coming by bus.
You shouldn't be reading a new.
② Used after appearance, happy, pretend, and sem
I enjoyed to be standing next to him when he collapsed
It happened that I was standing next to him when he collapsed.
③ After hope and promise, or after agree, arrange, decide, determine/be determined, plan, and take, but more commonly used after hope and promise:
I hope/hoped to be learning my living in a year's time
I hope I will/I hope I would be learning.

Passive

The use of the infinitive passive
Whether the infinitive uses the active form or the passive form often depends on the meaning of the sentence, that is, the active form is used when the meaning is active, and the passive form is used when the meaning is passive:
Did it need to be done so soon? Need it be done so soon?
She can't bear to be laughed at.
There was business to be taken care of.
It remains to be seen when you are right.
There was a lot of trash to be got rid of.
The infinitive completes the use of the passive
The completed passive of the infinitive represents the passive action that occurs before the predicate action:
I'm pleased to have been given this opportunity.
It's said to have been built in the Ming dynasty.

Completions

Indicates the action that occurs before the predicate action
He seems to have thought a cold cold Has.
I regret to have quarrelled with her.
I believe it to have been a mistake.
You appear to have travelled quite a lot.
I'm sorry to have given you so much trouble.
It's said to have been built in the Ming dynasty.
Indicates the action completed before a given time
I hope to have finished the work by now.
Express ideas and wishes that have not been realized in the past
I should like to have come earlier Come here earlier Of.
We were to have been married last year.

perfect progressive

form
To have been+present participle
He seems to have been spying for both sides.
He seems to have been working on secret intelligence for two reasons.
usage
As long as it is used after auxiliary verbs and after appearance and sem, it can also be used in happen, pretend, and believe, know, report After the passive mode of, say, understand:
He appears to have been waiting a long time
It appears that he has been waiting a long time.
It seems that he has been waiting for a long time.
He pretended to have been studying
He pretended that he had been studying.
He pretended to have been studying.

Sentence pattern usage

The infinitive of the verb in the sentence pattern There be:
For example one,There are too much homework to write.
two,There are students writing too much homework.

Infinitive to

In English, the infinitive is most commonly used after "to", for example, in "to walk", "to cry", "to eat", "to feel", this usage is called to-infinitive Shakespeare In writing Hamlet This kind of infinitive verb is widely used in soliloquy.
  • To be or not to be ...
  • To sleep, perchance to dream ...
Verbs that often follow to form infinitives include:
For example:
  • I arranged to stay the night
  • We intend to go skiing this weekend
  • I swear to honor you
  • He sought to notify them of this new occurrence.
These have Object , and then add to The infinitive verbs of "" include (together with the above verbs with an asterisk): "" advise, "", allow, challenge, command, compel, condemn, enable, encourage, expect, forbid, force, help, induce, inspire, instruct, invite, oblige, order, permit, persuade, prefer, program, remind, teach , tell, train, urge, warn.
Some verbs are followed by a for+object+ to -Then infinitive Usually these verbs contain the meaning of desire. You can't just add an object and infinitive one may work after them These verbs include apply, arrange, ask, call, clamour , long, opt, plead, press, vote, wait, wish, yearn.
For example:
  • I have arranged for the neighbor to water the plants
  • I begged for him to accompany me to the theatre

Infinitive tense

Infinitives in English exist in many aspects . Here is a table showing these different tenses for the verb to cook .
-
subject- verb form
Passive
General
(to) cook
(to) be cooked
In progress
(to) be cooking
/
perfect tense
(to) have cooked
(to) have been cooked
perfect progressive
(to) have been cooking
/

Related suffixes

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-er
Appended to the root of the verb in legal language, it means "the process of..." "the act of...", which originates from the infinitive suffix in French. The infinitive of the verb is used as a noun. Examples are: attainder, detainer,disclaimer,merger,rejoinder, misnomer ouster,remainder,retainer。 [7]
-ure
This usually comes from Latin The noun suffix - ura, but some infinitives from French end - ir, such as please [17] displeasure [11] 、leisure [18]

Words with infinitives

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Ado (noun) derived from at do ellipsis , at is subject to norwegian Impacted infinitive notation. Much ado means much to do at the beginning. [4] To do (noun) is more direct. The second half of the derring do (noun) is also an infinitive [15]
Afair (noun) comes from French à fair, à is equivalent to the preposition to, and fair (do) is also an infinitive verb. [5]
Latin Some infinitives ending in - ere end in ancient French and then end in - re/- ir. After entering English, the infinitive end is generally removed, but some remain, such as render [6] 、bever [8] 、surrender、tender [10] supper [16] 、dinner [20] 、power [21] Beer may come from the Latin infinitive. [19]
Esophagus from Greek oisophagos, The first half is from pherein Future tense The infinitive oisein. [9]
Jihad (noun) comes from Arabic The infinitive of. [12]
One dialect usage of done may be related to infinitive. [13] Vagary (noun) may come from the Latin infinitive vagari [14]

Other languages

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German infinitive
In German, the infinitive often ends with - en, such as sage, and the part before - en is a verb Stemming (sag -), but there are also a few- ern , - n, or eln. The use of zu before the verb is similar to English.
As a noun
In German, the infinitive can be directly used as a noun, for example, das Essen refers to food (when used as a noun, the initial letter is the same as Common nouns It also needs to be capitalized).
As subject
Some German infinitives can be used as subjects, such as anfangen, aufh ö ren, beginnen, andenken, glauben, hoffen, meinen, vergessen, versuchen.
Example: Sie meint, sie hat immer recht -> Sie meint, immer recht zu haben- He thinks he's always right
[1]
Dutch Infinitive
stay Dutch In, the infinitive also ends with - en. Use te before the verb, similar to English to.
For example, He is niet moeilijk te begrijpen- It's not hard to understand
north Germanic languages Scandinavia Infinitive
north Germanic languages The ending feature of verb - n was lost at least in 500 BC and replaced by - a. current Danish And section norwegian Dialects end with - e, most dialects of Eastern Norwegian and Gebeixi Swedish Dialect is rare - e, most are - a.
North Germanic usually has no word like English to.

Latin languages

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Spanish Infinitive
[2]
French infinitive
[3]