不定式动词指的是一种不定动词形式，通常由to加上原动词形式(如write)组成，但在某些情况下to可以省略。这里是初中英语动词不定式的用法总结,让我们看看！
初中英语动词不定式的用法总结：
1)不定式结构作主语
1.Te get contact with his family in Taiwan made him extremely happy since they separated more than 40 years ago.
2.To finish that task in such a short time is really a challenge.
在上述情况下，如果不定式较长，显得头重脚轻，则可由代词让作形式主语(形式主语it不可由that或this等其他代词代替)，而将不定式放到后面。如：
1.It made him extremely happy to get contact with his family in Taiwan since they separated more than 40 years ago.
2.John admitted that it is always difficult for him to be on time.
不定式结构所表示的动作是谁做的，即不定式的逻辑主语，通常可以通过for sb. to do sth. 结构表达：
1.It is quite important for us to read good books during a general review.
2.It is not difficult fot those talented students to pass the exam.
在某些形容词(如careless，clever，considerate，foolish，good，impolite，kind, naughty，nice，silly，stupid等)作表语时，不定式后可以加of来引导出其逻辑主语：
1.It is very kind of you to tell me the truth.
2.It is stupid of him to do such a silly thing.
2)不定式作宾语
不定式作宾语有两种：一种是及物动词后直接跟带to的不定式, 另一种是“及物动词+疑问词+带to的不定式。
及物动词+带to的不定式结构:
只能跟动词不定式的动词，常见的有: afford, agree, aim, appear, ask, believe, care，claim，decide demand, desire, determine, expect, fail, happen, hesitate, hope, intend, learn, long, manage, offer, pretend, promise, prepare, refuse, seek, swear, undertake，want, wish等。
1.He managed to solve the complicated problem.
2.The stranger offered to show me the way.
3.Mr. Smith undertook to build a new plant in South Africa.
动词+疑问代(副)词+不定式：
这类动词常见的有advise, decide, find out, forget, inquire, know, learn, see, regard, remember, teach, tell, understand, wonder等。常见的疑问代(副)词有: what, when, where, which, how, whether等。
1.He does not know when to start.
2.You can decide whether to continue or to stop.
3.I will show you how to deal with it.
有时，不定式可由it代替，而把不定式放到后面去。这可以用这一结构表达：动词(如find, think，consider，feel等)+it+ 形容词+不定式。
1.She considers it necessary to make friends with him.
2.We find it difficult to finish all the homework before 9 o’clock.
3)不定式做表语
一种情况为主语是不定式(表示条件);表语也是不定式(表示结果)：
1.To see is to believe.
2.To work means to earn a living.
另一种情况为主语是以aim，duty，hope, idea，job, plan，problem, purpose，thing，wish等名词为中心的短语，或以what引导的名词性从句，不定式表语对主语起补充说明作用：;例如：
1.His aim is to study abroad in the near future.
2.The most important thing is to negotiate with them about the price.
3.What I want to say is to forget all the unhappy experience.
4)不定式作定语
不定式结构作名词词组修饰语主要有三种类型：
第一种，被修饰的名词词组是不定式的逻辑宾语。例如：
1.There was really nothing to fear.
2.He gave me an interesting book to read.
如果不定式是不及物动词，后面就得加相应的介词。例如：
1.Mary needs a friend to play with.
2.That girl has nothing to worry about.
3.They have a strict teacher to listen to.
4.Although the film had been on for ten minutes, I still was not able to find a chair to sit on.
第二种，被修饰的名词词组是不定式的逻辑主语;例如：
1.Have you got a key to unlock the door?
2.The action to be taken is correct.
3.There is nothing to be gained by pretending.
第三种，被修饰的名词词组是不定式的同位结构。这类名词通常是表示企图、努力、倾向、目的、愿望、is算、能力、意向等意义的名词：ability, attempt, effort, impulse, inclination,wish等。例如：
1.Her daughter will make an even bigger effort to please her.
2.I have no wishto quarrel withyou.
3.Neither of them had any inclination to do business with Mary.
动词think用法要点：
1. 时态问题
(1) 表示“认为”或“在……看来”时，不用于进行时态;但表示“考虑”“思考”等，可用于进行时态。如：
I think it’s going to rain. 我想要下雨了。
I’m thinking whether I should go. 我在考虑是否应该去。
有时为了使语气更委婉或更带有试探性，可用一般过去时或过去进行时形式(但并不表示过去意义)。如：
I thought you might like something to read. 我想也许你想要读点什么。
(2) 用于过去完成时，表示未曾实现的想法或意图，可译为“原认为”“本来认为”。如：
I had thought that he would come to help us. 我原认为他会来帮助我们的。
2. 否定问题
当 think表示“认为”，且主语为第一人称时，若其后跟一个表示否定概念的宾语从句，通常将否定转移到主句上(当然若将否定放在从句也不算错，只是听起来较生硬)。如：
I don’t think she’s really fit for the job. 我认为她并不真正适合这项工作。
We don’t think he is very clever. 我们认为他不是很聪明。
在下列情况通常无需发生否定转移：
(1) 当 think 有副词修饰时。如：
I really think that he will not help us. 我的确认为他不会帮我们。
(2) 当 think 前有表示强调的助动词 do 时。如：
I do think that you are not right. 我的确认为是你不对。
(3) 当 think 不是以一般现在时形式出现时(如是一般过去时、过去进行时、过去完成时等)。如：
I thought you hadn’t read it. 我认为你没有读它呢。
I had thought he couldn’t pass the exam. 我原认为他考试不会及格的。
(4) 当本意是要否定主句时。如：
We didn’t think we’d be so late. 我们没想到会那么迟。
(5) 当 think 与其他动词并列使用时。如：
I think and hope that I’m not disturbing you too much. 我认为同时也希望我没有打扰你太多。
(6) 当从句的否定构成某种特殊句型时。如：
I think that he cannot do the work too well. 我认为这项工作他干得越出色越好。
3. 询问看法
询问对方看法时，可用What do you think of …或How do you like…，但是习惯上不说How do you think of …或What do you like…等。比较：
你觉得这部电影怎么样?
正：What do you think of the film?
正：How do you like the film?
误：How do you think of the film?
误：What do you like the film?
你认为他什么时候回来?
正：When do you think he will come back?
误：Do you think when he will come back?
4. 表示打算
表示打算做些某事，通常用think of doing sth。如：
I’ve been thinking of changing my job. 我一直想换个工作。
We are thinking about buying a car. 我们在考虑买辆汽车。
偶尔也用think to do sth(不算普通)。如：
They think to influence the voters. 他们打算影响选民。
但think to do sth用于否定句表示“没想到”的意思则属普通用法。如：
I didn’t think to see you here. 没想到在这儿见到你。
另外，用于过去时或过去完成时，表达本想做某事而实际上没做成时，后接不定式也属正常用法。如：
I thought to leave earlier. 我本想要早点出发的。
We had thought to return early but they wouldn’t let us go. 我们本想早回来的，但他们不让我们走。
动词insist的用法：
1. 表示“坚持”“主张”等，可及物或不及物。用作及物动词时，其后通常只接 that 从句作宾语，而不能接名词或代词作宾语，也不能接不定式或动名词作宾语。如：
误：He insisted his demand.
误：She insisted paying [to pay] for herself.
但是若其后接有介词 on 或 upon, 则可后接名词、代词、动名词。如：
He insisted on his demand. 他坚持他的要求。
She insisted on paying for herself. 她坚持要付她自己的那一份钱。
2. 其后可接 that-从句，但要根据意思的不同而分清两种情况：
(1) 表示“坚持要”“一定要”，从句所指的一般是尚未实现的事实，此时谓语通常用虚拟语气(即should+动词原形)，而且引导词that 一般不省略(尤其是当已经省略 should 时)。如：
The detective insisted that he should have a look. 警探坚持要查看。
I insisted that he (should) go with us. 我坚持要他和我们一块儿去。
(2) 表示“坚持说”“坚持认为”，从句所指的通常是已经发生的事或已存在的状态，谓语一般用陈述语气，引导词 that 可省略。如：
He still insisted he wasn’t there at the time. 他仍然坚持说他当时不在那儿。
John insisted that he heard somebody in the house. 约翰坚持说他听到房子里有人。
比较下面的句子：
He insists that she is careful. 他力言她是小心的。
He insists that she should be careful. 他坚持要她小心。
He insisted that he was not ill, but the doctor insisted that he should take the medicine. 他坚持说他没有病，但医生却坚持要他服药。
3. 不要受汉语的影响，在其后接用不定式的复合结构：
他一定要我们收下这些礼物。
误：He insisted us to accept these gifts.
正：He insisted on us [our] accepting these gifts.
正：He insisted that we (should) accept these gifts.
正：He insisted on it that we (should) accept these gifts.
动词bother的用法：
1. 表示“打扰”“麻烦”，为及物动词，要表示用某事麻烦某人，一般用介词 with 或 about。如：
I’m sorry that I have to bother you with [about] this problem. 对不起，我要用这个问题来麻烦你了。
2. 表示“费心”“费力”，多用于否定句和疑问句;若表示费心做某事，表示通常其后接动词时，通常用不定式。如：
He didn’t bother (=trouble) to answer personally. 他嫌麻烦不愿亲自回答。
Why bother to write? We’ll see him tomorrow. 还写信干什么? 我们明天就见到他了。
在现代英语中，bother 后也可跟动名词。如：
Don’t bother to lock [locking] the door. 别费事锁门了。
He won’t come, so why bother inviting him? 他不会来的，为什么还要费心请他呢?
有时后接 about doing sth 也可表示类似意思。如：
You needn’t bother to come up [about coming up]. 你不必费心来了。
3. 在口语中说 don’t bother(…), 主要用于谢绝对方主动提出的善意帮助，意为“不用费心(……)了”“不用麻烦(……)了”。如：
A：Shall I help you with the washing up? 要不要我帮你洗碗碟?
B：Don’t bother. I’ll do it later. 不必麻烦了，我等一会再洗。
Don’t bother to come to the door with me. I can see myself out. 不用费力送我出去。我可以自己出去。
另外，口语中还说I’m not bothered，其意为“我无所谓”。如：
I’m not bothered whether we go out or stay in. 出去还是待在家里，我无所谓。
4. 惯用句式can’t be bothered (to do sth) 的意思是“嫌麻烦而不做某事”“偷懒”。如：
The grass needs cutting but I can’t be bothered to do it today. 草得剪一剪了，但我今天却懒得去做。