初二英語動(dòng)詞不定式用法小結(jié)及練習(xí)

1、精品好資料學(xué)習(xí)推薦初二英語動(dòng)詞不定式用法小結(jié)動(dòng)詞不定式是動(dòng)詞的一種特殊形式，它沒有人稱和數(shù)的變化，在句子中不能做謂語；它由“to+動(dòng)詞原形”構(gòu)成，其否定形式是“not to+ 動(dòng)詞原形”. 在句子中可作主語、表語、賓語、賓語補(bǔ)足語、定語和狀語等句子成分。為使同學(xué)們更好地掌握其用法，現(xiàn)總結(jié)如下：一、動(dòng)詞不定式作主語動(dòng)詞不定式作主語，例如 To think of the animals in danger is sad .為避免句子的頭重腳輕，常用it作為形式主語，而真正的主語動(dòng)詞不定式后置，如It is sad to think of the animals in danger . 常用句型:I

2、t +be+adj./nto do sth./It takes sb. some time to do sth.二、動(dòng)詞不定式作賓語一些動(dòng)詞，如want, decide, hope, ask, agree, choose, learn, plan, need, teach, prepare,等，常接動(dòng)詞不定式作賓語。應(yīng)注意有些動(dòng)詞后面可接不定式作賓語，也可接動(dòng)名詞作賓語，但所表達(dá)的意義不同。常見的有：（1）stop to do sth.停下來去做另一件事；stop doing sth. .停止正在做的事（2）try to do sth. 盡力做某事；try doing sth.嘗試做某事（3）

3、remember/forget to do sth.記住忘記去做某事；remember/forget doing sth. 記得忘記做過某事。下列動(dòng)詞（enjoy finish keep mind practice spend advise suggest allow）后面不能用不定式，用動(dòng)名詞作賓語三、動(dòng)詞不定式作賓語補(bǔ)足語有些動(dòng)詞，如tell, ask, want, invite, teach, like, call等可接帶to的動(dòng)詞不定式作賓語補(bǔ)足語，構(gòu)成tell/ask/want /call/invite sb. to do sth.結(jié)構(gòu)。而表示使役動(dòng)詞和感官動(dòng)詞后面的賓語補(bǔ)足語時(shí)應(yīng)省

4、去to，（在被動(dòng)語態(tài)中應(yīng)加上to）。這些動(dòng)詞可歸納為“一感(feel)，二聽(listen to, hear)，三讓(let, make, have,，四看(look at, see, watch, notice)，半幫助(help)(即在動(dòng)詞help后面作賓語補(bǔ)足語時(shí)，to可有可無)”。四、動(dòng)詞不定式作狀語動(dòng)詞不定式作狀語主要用來修飾動(dòng)詞，表示目的they did lots of work to save the candas等。，表結(jié)果，常用結(jié)構(gòu)有too + adj./adv. + to do sth. adj./adv.enough + to do sth，表原因be +形容詞+ to

5、do sth 如 I am surprised to hear the news.為了強(qiáng)調(diào)目的，有時(shí)可以把動(dòng)詞不定式放在句首，或在不定式前加in order或so as to。五、動(dòng)詞不定式作后置定語時(shí)，與被修飾的名詞邏輯上有動(dòng)賓關(guān)系。如果動(dòng)詞不定式是不及物動(dòng)詞時(shí)，則要帶上與之搭配的介詞，構(gòu)成及物動(dòng)詞短語。動(dòng)詞不定式作后置定語常用于“have/has 某事to do”（some words to say, nothing to do,enough place to live）“Its time to do sth.”等結(jié)構(gòu)中。六、特殊疑問詞+不定式特殊疑問詞what when why how

6、where 等可以和不定式連用在句子做各種成分。如How to use compurers is a problem. I cant decide when to do it .動(dòng)詞不定式專項(xiàng)訓(xùn)練題：一、單項(xiàng)選擇。1. _ is difficult to work out the maths problem.A. ThisB. ThatC. ItD. Its2. We decided _ at the end of this month.A. travelB. not start outC. to leaveD. going3. They have no paper_.A. to writeB

7、. to write withC. write onD .to write on4. Let him _ a rest. I think he must be tired after the long walk.A. hasB. haveC. to haveD. having5. _the computer is a problem.A. How to useB. What to useC. Where to useD. Which to use6. The teacher told us _in bed.A. dont readB. read notC. to not readD. not

8、to read7. The old man was _angry _ say a word.A. so, thatB. as, asC. too, toD. very, to8. Why _home tomorrow?A. not goB. not goingC. not to goD. didnt go9. The TV set is too loud. Will you please _?A. turn down it B. turn it downC. to turn it down D. to turn down it10. Its cold outside. You had bett

9、er _ your coat.A. to put onB. putting onC. puts onD. put on二、用所給動(dòng)詞的正確形式填空。1. It took half an hour _(get) to the WorldPark 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. Im glad _(see) you in Beijing6. He put his photos on it for everyone _(look) at.7. Help him _(put) the photo