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1、动词不定式,知识点一：非谓语动词 定义：非谓语动词是指在句中起_、_或_作用的动词形式，而不是作谓语的动词形式。非谓语动词形式分为 _ 、 _ 和 _（to do、doing、done）,【要点梳理】,名词,形容词,副词,动词不定式,现在分词,过去分词,知识点二：动词不定式 不定式构成：to+_ （否定形式： ） 在句中起名词，形容词和副词的作用，可担任除谓语外的其它任何成分 1.动词不定式作_ To help you is my pleasure = Its my pleasure to help you. 很乐意帮助你。 Its nice to hear your voice. 不定式作主
2、语时，通常是在主语位置放个it作为形式主语，而把真正的主语的不定式结构后置。 2.动词不定式作_ Suddenly it began to rain.（ 作began的宾语） 突然天开始下雨。 1）常见“动词+动词不定式”的动词有： want、plan、pretend、 等后+_,not to do,to rain,decide、expect、refuse、forget,动词原形,主语,宾语,to do,2）和疑问词who, what, when, where, how, which等连用作tell, ask, know, show等动词的宾语。如： I dont know what to d
3、o.我不知道做什么。 She showed us how to do it.她向我展示怎样去做那东西。 3）用it作形式宾语,将真正的宾语_。如： We find it possible to eat 10 apples at one time.我发现一次吃10个苹果是有可能的。 3.动词不定式作宾语补足语 My father asked Mary to buy some salt back. （Mary在句中作宾语，to buy 补充说明Mary 要做的事）我爸爸叫玛丽去买些盐回来。 Mr. Li told us not to play computer games in the Net b
4、ar. （us在句中作宾语，not to play 补充说明us 不要做的事） 李老师告诉我们不要在网吧玩电脑游戏。 常见“动词+sb+动词不定式”的动词有： ask、encourage、_等后+sb+to do,wish、 advise、tell、allow、want、hope,置后,【例题】 ( )1. Please dont forget _ the room while I am away in Beijing. A.clean B. to clean C. cleaned D. cleaning ( )2. Ben decided_for a trip with his classm
5、ates. A. to go B. going C. go D. goes,B,A,【举一反三】 ( )3. Hi, Tom! Can you tell me when_for London? Yes, tomorrow morning. A.leaving B. leaves C. to leave D. are you leaving ( )4. I cant decide_. You mean the purple sweater or the blue one? A. how to go there B. who to go with C. where to visit D. whic
6、h to choose ( )5. Could you ask him_me this afternoon? A. calling B. call C. to call D. called,C,D,C,知识点三：动词不定式常考句型 1.It_sb.some time_sth. Eg: It took me two hours to write the letter. 2.It isadj.（ _sb.）_sth. Eg: It is difficult for him to finish the work on time. 3.主语find/thinkit_ sth. Eg: We find
7、it important/interesting to learn English.,takes/took,to do,for/of,to do,to do,adj,【例题】 ( )1.It took him a long time the picture. A. to finish to draw B. to finish drawing C. finishing drawing D. finishing to draw ( )2. In order to win the first place in the contest, he practiced the English song, b
8、ut found it difficult the lyrics. A. to sing; to remember B. to sing; remembering C. singing; to remember D. singing; remembering 【举一反三】 ( )3. I think it important the study skills. A.to know B. know C. knowing D. not to know ( )4. It took me half an hour my homework yesterday. A. to do B. do C. did
9、 D. doing,B,C,A,A,（ ） 1. Toms mother asked him some washing after dinner. A. to do B. does C. do D. did （ ） 2. We can use QQ to chat with each other on the Internet. Really? Will you please show me it? A.how to use B. what to use C. how can I use D. what can I use （ ） 3. Try to sing more English son
10、gs, and you will find it interesting a foreign language. A. learning B. learns C. learn D. to learn （ ） 4. It took me two weeks reading the novels written by Guo Jingming. A. Finish B. to finish C. finishes D. finishing （ ） 5. I didnt hear you come in just now.Thats good. We tried any noise , for yo
11、u were sleeping. A.not make B. not to make C. to make D. making （ ） 6. In order for the meeting, my sister forced herself to get up early this morning. A. not to be late B. not being late C. to be late D. being late,【综合练习】,A,A,D,B,B,A,（ ） 7. We advise parents their children at home alone in order to
12、 keep them away from danger. A. not leave B. not to leave C. leave D. to leave （ ） 8.Live or not, a famous American actor, was always expecting_an Oscar and finally he made it. A. to win B. will win C. not to win D. not winning （ ） 9.For more than once,our head teacher asks us the habit of keeping a
13、 diary. A.develop B.develops C.developing D.to develop （ ） 10.After long years of war, many people in Syria are homeless. I think it important_ a peaceful world A.build B. not build C. to build D. not to build （ ） 11.Young people are encouraged to work hard their own dreams. A. achieve B. achieves C. to achieve D. achieved,B,A,D,C,C,Thanks for your listening,