動詞不定式》PPT課件.ppt

1、動詞不定式,肯定： to + V.原 或者 (to)+ V.原 否定：not/never + (to) + V.原,He likes to read novels. I saw him come. We decided not to buy that house. 4) It is interesting to fly a kite. 5) Please let him not go there.,動詞不定式的結構,作主語,To hear your voice is so nice. To study hard is very important.,It is so nice to hear

2、your voice.,It is very important to study hard.,不定式作主語時，通常用it作形式主語， 把真正的主語放在后面。,注意:,1、It is +adj. for/ of sb. to do sth.,不定式做主語 謂語動詞用單數(shù),It +be + adj. +for/of sb. to do sth. for: adj.多為描述不定式行為的特征 （important/ necessary / interesting 等.） of: adj. 多為 描述主語的品質特征 （kind / nice / friendly / wise / foolish 等.

3、）,作主語,It is easy _ her to learn English well. It is clever _ you to solve the problem.,of,for,2、It takes sb. some time to do sth.,It takes me three hours to finish the homework every day.,作主語,我每天花去三個小時完成家庭作業(yè)。,I spend three hours finishing the homework every day.,3、It is + n. (for sb) to do sth.,It i

4、s my pleasure to help you with your English.,作主語,4、用在諺語中,To see is to believe.,To say is easy, but to do is hard.,作主語,1、It is necessary _us to learn to wait. (of/for) 2、It was careless _me to break the cup . （of/for) 3、It took them 1,000 yuan _this table. (buy) 4、It is my pleasure _ the box for you.

5、 (carry),to buy,for,of,to carry,練習,5、輪到我們打掃教室了。 It is our turn_ 6、To waste time is to shorten life. （翻譯成中文）,to clean the classroom.,浪費時間就是縮短生命。,練習,1、動詞+ to do sth. 常用動詞有： want / wish / like / would like / hope / plan / try / decide / learn / need / agree / begin / start / forget / remember / manage

6、/ seem / fail/ manage/ promise等,1、I hope to finish it tomorrow . 2、She plans to go and teach in the country.,作賓語,決定 學習 (有) 希望， 設法 拒絕 想 假裝 主動 答應 選 計劃， 同意 請求 幫一幫,2、動詞疑問詞+to do,I dont know_ next. She cant decide_.,作賓語,2、她不能決定買哪本書。,1、我不知道接下來該做什么。,what to do,which book to buy,=She cant decide which book

7、she should buy.,3、主語+謂語+it+ adj./n. +to do,作賓語,常見的謂語動詞： find, think, consider, feel, make等,The dusty air makes it difficult to get a clear picture of space. 大氣中的塵埃使人難以獲取太空的清晰圖像。,我認為學好英語很重要,I think it important to learn English well.,1、Dont forget _.(關燈) 2、I happened _when he called me. （出去） 3、I dont

8、 want_. (依賴別人） 4、Sam is learning_. (怎樣開車） 5、We promise _ the environment.(保護),to turn off the light,to go out,to depend on others,how to drive a car,練習,to protect,1、動詞 + 賓語（sb./sth.) + to do sth.,作賓補-對賓語進行補充說明,She asked me to help her. The teacher told him to come on time. Edisons mother taught him

9、to read and write. 常用的動詞有：ask, allow, advise, want tell, order, teach, expect等,動詞多為感官動詞、使動詞。 一感：feel 二聽：hear, listen to 三使：make, let, have 四看：see, notice, watch, look at,Johns mother makes him play the piano every day.,變被動時 是省略的不定式符號 to要還原回來：hear sb do sb be heard to do sth,John _ play the piano eve

10、ry day.,is made to,2、動詞+賓語+不帶to的不定式,注意:,1、Let him _ the work at once. (finish / to finish) 2、Do you like listening to other people_? (talk / talking/to talk ) 3、Jim was seen _the room. (enter /to enter ) 4、Please tell her _here on time . (come / to come),finish,talk,to enter,to come,練習,5、Ill help yo

11、u _this problem. (to solve /solve ) 6、 I wish you will stay with us.(改成簡單句） 7、Her story made us laugh. (改成被動句）,(to ) solve,I wish you to stay with us.,We were made to laugh by her story.,1、主語 + be + to do sth 主語多為 duty / wish / hope / idea / plan / ambition/ dream / work / job 等 名詞,1、My ambition is

12、to be a singer. 2、His work is to clean the classroom every day.,作表語,我的夢想是成為一名歌手。 他的工作是每天清掃教室。,2、諺語中,1、To know everything is to know nothing. 2、To see is to believe.,放在被修飾詞的后面,I have a lot of work to do. I want to find something to drink.,作定語,不定式為不及物動詞時后面應有必要的介詞。,Im looking for a hotel _. A. stay B.

13、stay at C. to stay D. to stay at,D,位置：,He hasnt got a house to live,I have no pens to write _.,in,with,He bought a toy to play with.,1、原因狀語: 主語 + be + adj.(表情感) + to do sth. (happy/ glad angry / sorry / sad /afraid 等),Im sorry to hear that.,作狀語,Im glad to see you.,2、目的狀語,The soldier ran into the roo

14、m to save the girl .,Tom went to the airport _(去接他的爺爺),to meet his grandpa,3、結果狀語 too + adj./adv. +to do sth. adj./adv. enough to do sth.,You are too young to do this job.,He ran fast enough to catch the bus.,動詞不定式可以充當?shù)木渥映煞?1、作主語,2、作賓語,3、作賓語補足語,4、作表語,5、作定語,6、作狀語,All I did was to give him some advice

15、 . His dream is to travel all over the world. Lucy needs a friend to play with . He was the last guest to arrive . Its interesting to read a science fiction .,下列不定式作何種成分？,（表語）,（表語）,（定語）,（定語）,（主語）,He was glad to see you. My father offered to buy a computer for me. He interviewed detective Ken to get

16、some information . The doctor asked him to have more fruit and vegetables.,（狀語）,（賓語）,（狀語）,（賓語補足語）,下列不定式作何種成分？,1、習慣于be used to _ 被用于be used to _ Water is used to _ (put) out fires. I am used to _ (take) a walk after supper. 2、prefer to 比起來更喜歡 比起游泳來，我更喜歡跑步。 I prefer _ to _. 3、look forward to 期待，盼望 Im

17、looking forward to _ (visit) Beijing again.,介詞 to 與不定式 to 的區(qū)別,put,taking,running swimming,visiting,do,doing,Exercises,1. - Youve done very well this time. - Its really kind _. A. for you to say so B. for you saying so C. of you to say so D. of you saying so 2. It is better to lose ones life than _.

18、A. if you lose your spirit B. losing his spirit C. to lose ones spirit D. your spirit getting lost,C,C,3. I cant work in this way. - Why not _ it in some other way? A. try to doB. try doing C. trying to doD. trying doing 4. Since you find it difficult _ a decision, youd better a discussion( 討論) with your parents. A.