初中非谓语动词.ppt

即to do ，其否定形式是not to do；不定式没有人称和数的变化。 一.不定式的句法功能 但使役动词（let .make .have)和感官动词(see .watch.look at .hear. feel)的宾补常省略to 注意： 他在找一个房间住。 没什么可担心的。 请给我把笔来写东西。 7. 疑问词+ to do 构成短语。 We don’t know when to leave Beijing. Can you show me how to swim. He didn’t tell me when to leave. 8. 只能跟ving 的动词： finish, enjoy, mind, keep(on), practise, feel like(want), be busy doing . give up, look forward to doing, can’t help doing, 9. 既可以跟动词不定式 又可以跟Ving 的几组动词 而意思无太大区别的： like to do like doing prefer. hate begin start ……. 10. 注意Stop to do 与stop doing ： stop to do 指的是：停下其它的事情，去做不定式的动作。We are so tired. Let’s stop to have a rest. 我们太累了，让我们停下来休息一会儿吧。Stop doing是指停下来正在做的事情。 The students stopped talking when the teacher came in. remember to do 记得要去做 remember doing 记得曾经做过 Please remember to bring your book with you tomorrow. I remember bringing my book this morning. forget doing 曾经做过这件事，但后来忘了 forget to do 忘记要做一件事 （根本没做） I often forget to turn off the light, but I remember turning it off last night. * * 动词不定式: 1.It’s normal to cry when we feel sad. (做主语) 不定式做主语时,常用代词it 来代替不定式结构, 这时 it 被称为形式主语,而作为句子真正主语的不定式则被后置.往往放v.和adj.之后. e.g. To learn English well is not easy. = It’s not easy to learn English well. It’s + adj. (+for sb.) +to do sth. 1. 不定式做主语： 常用句型：It’s + adj. (+for sb.) + to do sth. （对某人来说）做某事是怎样的 形式主语 真正主语 =To work out the problem is difficult for me. It’s difficult for me to work out the problem. =Working out the problem is difficult for me. e.g. 对我来说解答出这道题是很难的。 2. The best way to learn English is to read loudly. (做表语) 可与be动词构成系表结构. Her wish is to study in Ji Yan Middle school. My job is to clean the streets. 在形式上，位于系动词后的就是表语。从含义上讲，表语是回答主语“是什么” 的语法成分。 2. 不定式做表语： 常放在be动词后，表明主语“是什么”。 e.g. Our plan is to go there by plane. 我们的计划是乘飞机去那儿。 （主语和表语指代的是同一事物） 1.My job is _________computers. to selling B. sell C. to sell 2. Her hobby is ______ (play) football. to play = Her hobby is playing