Grammar 不定式复习归纳.pptVIP

Unit 1; 时态;Read the following sentences:;二、非 谓 语 动 词 的 作用;一般式;5.作介词but; except; besides的宾语，若其前有do 动词的 某种形式时。①She could do nothing but cry. ②What do you like to do besides swim? 6.动词不定式在be 动词后做表语，解释系动词前do的具 体内容时。 ①The first thing I want to do is take a bath. ②What I can do is tell her the truth. 7.两个或两个以上句法功能相同的不定式并列使用时, 只第一个不定式带to,后面的不定式不带to。 ①They began to read and write. ②Would you like to go and see a film? 8.在动词help后作宾语或宾语补足语时既可省略to也可 不省略to。 He was too busy to help you (to) clean the room.;五、不定式主动式表示被动意义的情况：;六、动名词主动式表被动意义:;七、动词不定式的复合结构：;九、动词不定式的语篇??略 ;4.在would like to, used to, have to, ought to, be going to, be able to等结构之后作复合谓语时。 --Does Mr. John live here? --No, but he used to. 5. 不定式之后的动词是be 或have done 时, to 后的be或 have与to一起保留。 ① China is no longer what she used to be. ② -- Have you told Allen about the concert? -- Sorry, but I ought to have. 6.不定式是完成式的被动语态have been done时, 要将 have been 一起保留， --Your homework should have been handed in yesterday afternoon. --Yes, I know it ought to have been.; afford agree arrange ask choose dare decide demand desire determine elect expect fail help hope intend learn long manage offer plan prepare pretend promise refuse swear volunteer wish; set out; would like;advise allow ask beg cause command consider encourage expect forbid force get hate intend invite like mean notice oblige order permit persuade prefer press remind request require suppose tell train urge want warn wish；would like ;Thank you next time !