动词不定式【Infinitives】
原形动词在句子中无人称和数的限制，并有名词、形容词或副词的作用的称不定式。
动词不定式不是一种动词，由不定式符号加上原形动词构成，to本身没有意义，有时可以省略to。
1. She told me ____ for her at home.
A. waits B. wait
C. to wait D. waiting
解析：C. 考查不定式作宾语补语的用法。tell后跟to do。
2. Jim wanted me ____ him up at ten o"clock.
A. call B. calls
C. to call D. called
解析：C. 考查不定式作宾语补语。want sb. to do sth.是习惯性用法。
3. It"s too late. Why ____ now?
A. not to go B. not going
C. not go D. don"t go
解析:C. "why+(not)＋原形动词"表示建议某人(不)该做某事。
4. The doctor asked me ____ in bed for two days.
A. stay B. to stay
C. stays D. staying
解析：B. ask sb. to do sth. 是习惯性搭配.stay in bed表示“卧床”，要注意名词bed之前不用冠词。
5. It"s too hard. Why ____ the farmer for help?
A. not to ask B. don"t ask
C. ask not D. not ask
解析：D 考查 why not后接原形动词的用法。“Why not + 原形动词”表示提出建议或看法。
6. It"s time for supper now. Let"s ____ it.
A. stop to have B. stop having
C. to stop to have D. stopping to have
解析：A. let后跟不带to的动词不定式。
7. Mike is learning ____ a computer.
A. how can he use B. how to use
C. how he use D. how to using
解析：B. "learn+how (what) + to do sth."是一种常用的不定式结构，常见的类似的动词还有 know等。
8. When he heard this, he was ____ angry ____ a word.
A. too; say B. too; said
C. too; saying D. too; to say
解析：D 考查"too+形容词+to+动词原形"的用法。too...to表示“太……而不能”的意思。
9. He asked his mother ____ too early.
A. don"t wake him up B. not to wake him up
C. not wake him up D. to not wake him up
解析：B. not to do sth.
10. Mr. Brown teaches his Japanese friends ____ Chinese food.
A. cook B. cooks
C. cooked D. to cook
解析：D. teach后跟动词不定式作宾语补语。构成teach sb. to do sth.或teach sb. how to do sth.句型。
11. I saw him ____ basketball with Jack an hour ago.
A. plays B. to play
C. played D. play
解析：D.感官动词see, hear, notice等跟不加to的不定式作宾语补语。
12. I have a lot of things ____ this weekend.
A. do B. did
C. doing D. to do
解析：D. to do在本句中是不定式短语作关系代词修饰things。
13. We kept ____ that ball to each other, and they began to get angry.
A. to pass B. passing
C. pass D. past
解析：B. keep doing"不停地做某事".
14. The boy enjoys ____ the radio in the morning.
A. listening B. listening to
C. listen to D. to listen
解析：B. enjoy后跟doing，作宾语，而不能跟不定式。
15. The little boy is busy ____ his homework now.
A. do B. to do
C. doing D. does
解析：C. be busy后doing sth.，意为“忙于做某事”。
16. Lily likes ____ clothes of light color.
A. to put on B. putting
C. to dress D. wearing
解析：D. like to do指喜欢做某事，有特定的时间、地点等，而like doing却指习惯于做某事。put on意为“穿上”，指动作，wear“穿着”，表示状态，dress后不跟衣服作宾语，其后要跟衣服类的名词，需用be (get)dressed in结构。
17. How about ____ to the cinema on Sunday?
A. go B. to go
C. going D. will go
解析：C. 介词about后跟doing, doing作介词宾语。how about表示提出一种建议。
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