8 8 不定式5.ppt

不定式的用法 非谓语动词 The Non-predicative Verbs _______(help) the disabled, she once worked as a teacher in a special school. Practise 2 那个人同意和我们合作。 3 (b) 我原想来拜访你的，但没来成。 I intended to have called on you, but was prevented from doing so. = I had intended to call on you, but was prevented from doing so. 注意： wish, hope, plan, mean… + to have done =had wished/hoped/planned…+to do 表示原打算干却没能办到 4．修饰关系 Now it is time to begin our class. 现在是上课的时间了。 I need somewhere to take a nap. 我需要一个地方打个盹。 Is that the way to open the can 那就是打开罐头的方法吗？ It was reported that she was the first person _________(become) a US-dollar billionaire by writing books. *动词不定式在以下情况有时态语态变化，可跟进行式、完成式、完成被动式、完成进行式，其它情况一般只跟to do/to be done表将来 A) sb appear, seem, happen, pretend + to do/to be doing/to have done sth B) sb be said, known, reported, believed, claimed…+ to do/to be doing/to have done C) sb be + adj. + to do sth / to have done 3.在ask, advise, allow, permit, persuade, tell, wish 等词的复合结构中to通常保留 E.g: Do the experiment as your teacher tells you to. 4.不定式的否定形式后保留to E.g: He wanted to quiz school and I advised him not to. 注：to 后若是主动词have 或 be时必须保留。 E.g:---Sorry, I didn’t finished doing my home work. ---You ought to have. Our school is no longer what it used to be. 几对易混淆的词组： stop to do sth. 停止去做某事 doing sth.停止正在做．．． forget to do sth.　忘记去做．．． doing sth.　忘记已做了．．． remember to do sth.　记得去做．．． doing sth.　记得曾经做．．． 解释 (1)不定式的一般形式所表示的动作，通常与谓语的动作（状态）同时（或几乎同时）发生，或是在它之 后发生。 (2)如果谓语表示的动作（情况）发生时，不定式表示的动作正在进行，这时不定式就要用进行式。 (3)如果不定式的动作发生在谓语动词之前，就要用完成式。 They pretended to be studying when the teacher came in. I`m sorry to have kept you waiting. I want to have a holiday as soon as possible . 1.用于adj. 后 e.g. I am sorry to have kept you waiting for a long time. 2.用于seem ,appear, happen, pretend.. 后 e.g. The police seemed to have known the truth. He pretended to be reading a book when his mothe