当表语是动词不定式时，作主语的谓语动词也 只能是动词不定式，即主语和表语结构要一致 或对称。 To see is to believe 当主语部分有动词实义do的某个形式时，做表语 的动词不定式可以省略to。 The only thing we can do is wait till he comes back.
C. being got
D. to get
解析：名词the way后跟有两个定语，一个是 定语从句Smith thought of， 一个是动词不定 式to get enough money to buy the new house.
C 5. The young assistant was noticed ______ the bank alone last night. A. entering C. to enter B. enter D. entered
A. invite C. inviting B. to invite D. to have invited
解析：it为形式宾语，动词不定式作真实宾 语，没有邀请这动作发生在晚会前，故用动 词不定式的完成式。
小结
要掌握动词不定式的用法，重点要识记和区分一些 特殊动词。如哪些动词后跟动词不定式作宾语，哪 些动词后跟动名词作宾语；哪些动词后根省to的或 带to的不定式作宾补，哪些动词后跟现在分词作宾 补等。 动词不定式的时态和语态关键要弄清不定式所表示 的动作和句子谓语动词所表示动作的时间先后顺序 以及动词不定式和句子主语、宾语或所修饰词的关 系。
高中英语同步辅导
Book2A Unit1 动词不定式的用法
By Edison
动词不定式
1. 动词不定式的用法
1. 作主语
2. 作宾语
3. 作定语 4. 作表语 5. 作宾补 6. 作状语
2.动词不定式的时态和语态
3. 巩固练习
1. 动词不定式作主语
动词不定式作主语，谓语动词用第三人称单数。
How to get enough money is still a question. To make a plan for our study is very important.
He promised to come but he hasn’t turn up yet.
The boys are longing to watch the World Cup.
动词不定式作宾语应注意的问题
1.有些动词后跟动词不定式和动名词作宾语意 义截然不同 try, go on, stop, mean, regret, remember, forget等
4.动词不定式作表语
动词不定式常放在系动词（be动词）后作表 语，有时也放在其他少数连系动词如： remain, seem, sound等后。 当表语是动词不定式时，作主语的谓语动词也 只能是动词不定式，即主语和表语结构要一致 或对称。
His plan is to spen a few days in the countryside. He appears to have caught cold.
2. 动词不定式作宾语
动词不定式作宾语常用于下列及物动词后： want, agree, decide, manage, wish, hope, ask, like, love , choose, promise, continue, plan, learn, expect, offer, prepare, refuse, pretend, attempt, intend, threaten, seek, hesitate, long, desire, fail等等。
We can do nothing but wait.
5.动词不定式作宾补
常要求跟动词不定式作宾补的动词有： （1）可接带to的不定式作宾补的动词有： ask, get, allow, forbid, prefer, force, inspire, advise, cause, tell, order, warn, teach, permit, wish, invite, encourage等
He pretended to be reading when his mother came into his room.
They are said to be building another bridge across the river
3. 动词不定式的完成式 动词不定式的完成式表示动作发生在谓语动 词所表示的动作前。 I am sorry to have kept you waiting so long. I happened to have read the book before.
1. 动词不定式作主语
有时候为了保持句子平衡，常用it作形式主语， 放到句首，而将作真实主语的动词不定式放 到句末。
It will take a whole day to get there by car. It is important to make a plan for our study. It is impossible for me to finish the work in a week.
I got up early in order to /so as to catch the first bus. (作目的状语） To learn English well, you should practise it whenever possible. (作目的状语） He wept to hear the news. (作原因状语） I am glad to see you here. (作原因状语）
You’d better get Tom to do it. She doesn’t allow me to use her computer. The teacher told him not to be late again. He invited us to attend his birthday party.
1. 动词不定式的一般式（to do）用于表 示不定时所表示的动作与句子谓语动词 几乎同时发生。 Ｉsaw her enter the room. I have some important news to tell you.
2. 动词不定式的进行式 动词不定式的进行式表示动作正在进行，和 句子谓语动词所表示的动作同时进行。
go on to do sth.继续做另一件事 go on doing sth.接着做同一件事 After a short rest, they went on doing the work. After finishing the homework, the students went out to play football.
He hurried to the post office, only to find it closed. (结果状语）
The boy is too young to dress himself.（同上） 当too…to…结构中的不定式前有形容词 nervous, pleased, willing, happy, delighted, glad等时，to后面译作肯定。
解析：感官动词后可跟现在分词和省to的动词 不定式作宾补。不定式表示全过程，现在分词 表示正在进行。在被动语态中用带to的动词不 定式作主语补语。
6. Wang Dong wanted to surf the Internet, but his father told him __________. D
3. We climbed to the top of the tower ________a better view of the area. D A. getting B. got
C. having got
D. to get
解析：动词不定式作目的状语，其余几个没 这功能。
4. What is the way Smith thought of _________ D enough money to buy the new house. A. getting B. having got
regret to do sth.遗憾地做某事 regret doing sth.后悔作了某事 I regret to say that you haven’t passed the exam. I regret having told him about it
动词不定式作宾语应注意的问题
2. 如果不定式作宾语而后面又有一个宾语 补足语，这时要用it作形式宾语而把这个 动词不定式放到补语后。 I feel it my duty to help you. I once thought it impossible for us to finish the job in such a limited time.
巩固练习
1. Several of these washes and dryers are out of D order and______. A.need to be repairing B. repairing is required of them C. require that they be repaired. D. need to be repaired. 解析：and并列谓语动词， need to be repaired相当 于need repairing.
2.— I wish you had brought your family with you.
— I’ll get them _______ next time. B
A. coming B. to come
C. come
D. have come
解析：使役动词get后跟带to的动词不定 式作宾补，let，make, have后跟省to的 动词不定式作宾补。