初三英语复习《动词不定式》课件.pptVIP

3、It is + n. (for sb) to do sth. * 动词不定式 肯定： to + V.原 或者 (to)+ V.原 否定：not/never + (to) + V.原 He likes to read novels. I saw him come. We decided not to buy that house. 4) It is interesting to fly a kite. 5) Please let him not go there. 动词不定式的结构 作主语 To hear your voice is so nice. To study hard is very important. It is so nice to hear your voice. It is very important to study hard. 不定式作主语时，通常用it作形式主语， 把真正的主语放在后面。 注意: 1、It is +adj. for/ of sb. to do sth. It +be + adj. +for/of sb. to do sth. for: adj.多为描述不定式行为的特征 （important/ necessary / interesting 等.） of: adj. 多为 描述主语的品质特征 （kind / nice / friendly / wise / foolish 等.） 作主语 It is easy _______ her to learn English well. It is clever ________ you to solve the problem. of for 2、It takes sb. some time to do sth. It takes me three hours to finish the homework every day. 作主语 我每天花去三个小时完成家庭作业。 I spend three hours finishing the homework every day. It is my pleasure to help you with your English. 作主语 4、用在谚语中 To see is to believe. To say is easy, but to do is hard. 作主语 1、It is necessary ______us to learn to wait. (of/for) 2、It was careless ______me to break the cup . （of/for) 3、It took them 1,000 yuan _________this table. (buy) 4、It is my pleasure _________ the box for you. (carry) to buy for of to carry 练习 5、轮到我们打扫教室了。 It is our turn_________________________ 6、To waste time is to shorten life. （翻译成中文） to clean the classroom. 浪费时间就是缩短生命。 练习 1、动词+ to do sth. 常用动词有： want / wish / like / would like / hope / plan / try / decide / learn / need / agree / begin / start / forget / remember / manage / seem / fail/ manage/ promise等 1、I hope to finish it tomorrow . 2、She plans to go and teach in the country. 作宾语 2、动词＋疑问词+to do I don’t know____________ next. She can’t decide_________________. 作宾语 2、她不能决定买哪本书。 1、我不知道接下来该做什么。 what to do which book to buy =She can’t decide which book she should buy. 1、Don’t forget _________________.(关灯) 2、I