1、动词不定式(to do 结构)A. 作主语为避免句子的头重脚轻，常用 it 作为形式主语，而真正的主语动词不定式后置。常用句型：It +be+adj./n.+(for/of sb.) to do sth./It takes sb. some time to do sth.B. 作宾语动词 want, decide, hope, ask, agree, choose, learn, plan, need, teach, prepare常接动词不定式作宾语。C. 作（后置）定语 常用于“ have/hassth.to do”或“enough 名to do”“Its time to do sth.”
2、等结构中。D. 作宾语补足语tell, ask, want, invite, teach, like, call 等可接带 to 的动词不定式作宾语补足语，构成 tell/ask/want /call/invite sb. to do sth.结构。 【注意】动词不定式作使役动词和感官动词的宾语补足语时应省去 to：“一感(feel) ，二听(listen to, hear)，三让(let, make, have,，四看(look at, see, watch, notice)，半帮助(help)”。E. 动词不定式作状语主要用来修饰动词，表示目的，结果或原因。为了强调目的，有时可以把动词不定
3、式放在句首，或在不定式前加 in order (to) 或 so as (to) “为了，目的是” 。常用结构有 too + adj./adv. + to do sth.等。F. 固定句式中动词不定式的用法常见的有：had better (not) do sth./Would you like to do sth.?/Why not do sth.?/Would you please (not) do sth.?等。G: 动词不定式通常和特殊疑问词连用做句子主语/宾语。如：I dont know what to do /where to go .专项训练题*一、选择适当答案。1. _ is d
4、ifficult to work out the maths problem. A. This B. That C. It D. Its2. We decided _ at the end of this month. A. travel B. not start out C. to leave D. going3. They have no paper_. A. to write B. to write with C. write onD .to write on4. Let him _ a rest. I think he must be tired after the long walk
5、. A. has B. have C. to have5. _the computer is a problem. A. How to use B. What to use C. Where to use D. Which to use6. The teacher told us _in bed. A. dont read B. read not C. to not read D. not to read7. The old man was _angry _ say a word. A. so, that B. as, as C. too, to D. very, to8. Why _home
6、 tomorrow? A. not go B. not going C. not to go D. didnt go9. The TV set is too loud. Will you please _? A. turn down it B. turn it down C. to turn it down10. Its cold outside. You had better _ your coat. A. to put on B. putting on C. puts on D. put on二、用所给动词的正确形式填空。1. It took half an hour _ (get) to
7、 the World Park from Kittys school.2. It was interesting _ (see) so many places of interest from all over the world.3. They want _ (save) time by using shorter words and phrases. 4. Kittys classmate Daniel taught himself how _ (make) a home page.5.I have many things _ (do) in Beijing. 6. He made the girl _ (cry) yesterday.7. He put his photos on it for everyone _ (look) at.8. Help him _ (put) the photos in the correct order.9. Its time for class. Please stop _(talk).10. Id like _ (go) to the Temple of Heaven.11.Could you please tell me how_(get) to the hospital?
