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,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,#,单击此处编辑母版标题样式,动词不定式的用法,Grammar,动词不定式是一种非限定性动词,由,to,动词原形构成,但在有些情况下,to,可以省略。动词不定式在句中可以作主语、宾语、表语、定语和状语。,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 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-,不定式作主语,常见带形式主语,it,的句型：,1. It is,easy ( difficult, important,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.,Its a great honor,to be invited,to Marys birthday party.,It takes me an hour,to clean,the room.,Grammar-,不定式作主语,Grammar-,不定式作表语,不定式作表语时一般紧跟在系动词,be, seem, remain, appear, get,等后面，用来说明主语的内容。,常见的主语有：,ones 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 matter.,Grammar-,不定式作宾语,1.,常见的不定式作宾语的及物动词有：,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 didnt know whether,to laugh,or,to cry,.,I want,to speak,to Tom.,Grammar-,不定式作宾语,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-,不定式作宾语补足语,The teacher told us not,to be,so noisy in the class.,I expect you,to give,me some help in the experiment.,Father will not allow us,to play,on the street.,We believe him,to be,guilty,.,Grammar-,不定式作宾语补足语,一些动词后作宾补的不定式不带,to.,一感,：,feel + sb + do sth.,二听,: 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 again and again?,Grammar-,不定式作定语,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-,不定式作定语,所修饰的名词前有,the first/last/next, the only, the best, the most,等序数词或最高级等修饰语时,用不定式作定语,.,不定式修饰,something, anything, nothing,.,The next train,to arrive,is from Washington.,I want something,to read,.,Its your turn,to speak,now.,Its time,to go to school,.,Grammar-,不定式作状语,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 hurried 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,为了避免重复，作宾语的不定式第二次,出现时往往省略，只保留不定式符号。,在,want, wish, hope, like, hate, plan,try, love,等词后,.,You can try it again if you want to.,-Have you listened to the music?,-No, but 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,当介词,but, except,前面有实义动词,do,时,不定式在介词之后可以省去,to,。,Grammar-,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.,单句语法填空,4.,We agreed,_ (meet)here,but so far she hasnt turned up yet.,5,. Rather than _on a crowded but, he always prefers _a bicycle,. (ride),Thank you!,Goodbye!,
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