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1、,,,,,單擊此處編輯母版文本樣式,第二級,第三級,第四級,第五級,,,?#?,單擊此處編輯母版標(biāo)題樣式,,,,,動詞不定式的用法,Grammar,,動詞不定式是一種非限定性動詞,,,由,to,＋動詞原形構(gòu)成,,,但在有些情況下,to,可以省略。動詞不定式在句中可以作主語、賓語、表語、定語和狀語。,Grammar--,不定式,,,,,,Grammar--,不定式的用法,To finish,so much homework in a day is impossible.,To see,is,to believe,.,My wish is,to be,a doctor.,I want,to do

2、it,myself.,,,,,Grammar--,不定式的用法,,We found it difficult,to work,with him.,He always has a lot of meetings,to attend,.,He is looking for a room,to live in,.,I study hard,to serve the people,well.,In order not to be late,she took a bus.,,Grammar--,不定式作主語,,常見帶形式主語,it,的句型：,1. It is,easy ( difficult, impo

3、rtant,,possible, necessary, good, kind, wise,,foolish…),to do sth.,2. It is,a pleasure (pity, crime, an,honor…),to do sth.,3. It takes (sb.) some time to do sth.,It is difficult,to understand,him.,It is a pleasure,to help,you.,It's a great honor,to be invited,to Mary's birthday party.,It takes me an

4、 hour,to clean,the room.,Grammar--,不定式作主語,Grammar--,不定式作表語,不定式作表語時一般緊跟在系動詞,be, seem, remain, appear, get,等后面，用來說明主語的內(nèi)容。,常見的主語有：,one’s dream, business, wish, idea, plan, job, work, task, duty, what one wants to do…,My wish is,to be,a doctor.,My chief purpose is,to point out,the difficulties of the ma

5、tter.,,Grammar--,不定式作賓語,,1.,常見的不定式作賓語的及物動詞有：,want, hope, wish, agree, promise, decide, determine, fail, manage, offer, prepare, pretend, choose, expect, refuse,,I like,to keep,everything tidy.,When I heard the words, I didn’t know whether,to laugh,or,to cry,.,I want,to speak,to Tom.,Grammar--,不定式作賓語

6、,,2. feel, find, judge, make, think, believe, consider + it +adj. / n. + to do sth.,,He thought it a great pity not,to have,invited her.,,She made it a rule,to get,,up,at five.,Grammar--,不定式作賓語補足語,The teacher told us not,to be,so noisy in the class.,I expect you,to give,me some help in the experimen

7、t.,Father will not allow us,to play,on the street.,,We believe him,to be,guilty,.,Grammar--,不定式作賓語補足語,一些動詞后作賓補的不定式不帶,to.,一感,：,feel + sb + do sth.,二聽,: hear, listen to,三看,: see, watch, look at, observe, notice,四使役,:,let, make, have,Suddenly we,felt,the atmosphere,grow,tense.,What,made,him,do,that a

8、gain and again?,Grammar--,不定式作定語,I need a pen,,to write with,.,In the dark room, he even had no bed,,to sleep on.,I need someone,,to type,,the letters for me.,The building,,to be built,,is a lab.,Grammar--,不定式作定語,所修飾的名詞前有,the first/last/next, the only, the best, the most,等序數(shù)詞或最高級等修飾語時,,,用不定式作定語,.,不定

9、式修飾,something, anything, nothing,.,The next train,to arrive,is from Washington.,,I want something,to read,.,It’s your turn,to speak,now.,It’s time,to go to school,.,Grammar--,不定式作狀語,He is lucky,to get,here on time.,Be careful,not to catch,a cold.,They started early,so as to catch,the first bus.,I hu

10、rried to get there,only to find,him out.,They parted,never to see,each other.,He studied hard,only to fail,.,Grammar--,不定式的省略,為了避免重復(fù)，作賓語的不定式第二次,出現(xiàn)時往往省略，只保留不定式符號。,,在,want, wish, hope, like, hate, plan,,try, love,,等詞后,.,,You can try it again if you want to.,,--Have you listened to the music?,--No, but

11、 I plan to.,The enemy can do nothing but__________.,The enemy had nothing to choose but ____________.,I have nothing to do except _____ the article for him.,I have nothing to choose except _______,the article for him.,,,surrender,to surrender,當(dāng)介詞,but, except,前面有實義動詞,do,時,,,不定式在介詞之后可以省去,to,。,Grammar-

12、-,不定式的省略,copy,to copy,Grammar--,不定式的用法,Practice,The teacher asked us,not_____(make)so,much noise,.,With a lot of difficult problems____ (settle), the newly-elected president is having a hard time.,Sandy could do nothing but ___ (admit)to his teacher that he was wrong.,,,單句語法填空,4.,We agreed,_____ (meet)here,but so far she hasn’t turned up yet.,5,. Rather than ____on a crowded but, he always prefers ____a bicycle,. (ride),Thank you!,Goodbye!,