语法doing.ppt

1、-ing形式,1. 动词-ing形式的构成：是在动词末尾加 -ing 形式构成，因此又叫动词的 -ing 形式（细分为动名词和现在分词）。如： do-doing, be-being, ask-asking, etc. 否定形式：not+ -ing 构成 2. 动词-ing形式不能单独作谓语，没有人称和数的变化，但可以有自己的宾语和状语，还有时态和语态的变化。,-ing form,动名词,现在分词,动名词：在句子中起名词作用，可作 _,_,_,_,主语,宾语,表语,定语,动名词的形式,1 The ving form used as subject:,It is necessary to get

2、water from wet to dry place. Getting water from wet to dry places is necessary.,It cost nothing to wish for thing. Wishing for things cost nothing.,2 .The ving form used as object,He likes helping others.,只接v-ing作宾语的动词有：,admit, allow, avoid, appreciate,1) v+object,consider, delay, escape, enjoy, fin

3、ish, keep, imagine, mind, miss, practice, suggest,He suggested practising speaking English in and out of class.,只接v-ing作宾语的词组有,give up, put off, insist on, look forward to, pay attention to, lead to, devote. to, make a contribution to, feel like, stick to,He has devoted his life to finding ways to g

4、row more and more rice.,2) prep.+ object.,His problem is getting to know more friends.,My job is teaching.,a drinking cup,a dancing hall,a washing machine,a cooking pan,3 The ving form used as predict:,4 The ving form used as attribute:,1. 动名词和不定式作主语，一般都可以使用形式主语it，而将动名词或不定式放在句尾。但是在下列句型中，一般宜用动名词，不宜用不

5、定式来代替： Its no use doing Its no good doing Its a waste of time doing ,例如： Its no use going there today; he wont be at home. Its a waste of time arguing about it.,而在Its important/necessary/advisable/ essential/fitting 这类句型中，只能用不定式，如： Its important to learn foreign languages.,2. 在allow, advise, forbid,

6、 permit后直接跟动名词作宾语，如果有名词或代词作宾语，则构成“ allowadviseforbidpermit 名词代词不定式（宾语补足语）”之形式。如： We dont allow smoking here We dont allow anybody to smoke here,3. 动词need, require, want意为“需要”时，后跟动名词的主动式或不定式的被动式作宾语，意义没有区别。如： The window needsrequireswants cleaningto be cleaned,4. 在begin, continue, love, like, hate, pr

7、efer, intend, start 后用动名词和用不定式作宾语均可，意义没有多大区别。,5. 动词forget, go on, mean, regret, remember, stop, try, be used to, cant help后跟动名词和跟不定式区别较大，须注意: forget, regret, remember后跟动名词，动名词表示已经发生的动作；后跟不定式表示将要发生的动作。, Lets have a rest Not now. I dont want to stop _ yet A. study B. to study C. for studying D. studyi

8、ng,解析：stop studying意为“停止学习”。,练习, Let me tell you something about the journalists Dont you remember _ me the story yesterday？ A. told B. telling C. to tell D. to have told,解析: remember telling me意为 “记得曾经告诉过我”。,在做定语的时候：,a drinking cup,A cup is drinking.,the sleeping boy,A boy is sleeping.,a cooking pa

9、n,A pan is cooking.,找出右边成立的句子。如果讲得 通就是现在分词，否则就是动名词。,动名词,动名词,现在分词,现在分词作定语表示动作。如果是单词，放在被修饰的名词前；如果是短语，放就放在被修饰的名词之后。,动名词作定语表示性质或用途。,总结：,1. It took the workmen only two hours to finish _ my car. A. repairing B. repair C. to repair D. repaired,Exercise,2. Have you forgotten _$1000 from me last month? Will

10、 you please remember _ it tomorrow? A. borrowing; to bring B. to borrow; bring C. borrowed; bringing D. borrowing; bringing,3. My brother keeps _ me with my work. A. to help B. help C. helping D. helped 4. We should often practise _ English with each other. A. to speak B. spoke C. speak D. speaking,

11、5. The story was so funny that we _. A. couldnt help laugh B. cant but laugh C. couldnt help laughing D. couldnt help but to laugh,6. Though it sounds a bit too dear (昂贵), it is worth _. A. being bought B. buying C. to buy D. buying it 7. He devoted his life to _ the atomic theory. A. study B. be st

12、udied C. studying D. have studied,8. We are both looking forward to _ next week. A. going on vocation (休假) B. go on vocation C. be going on vocation D. have gone on vocation,9. The microscope is used for_ minute (微小的) objects. A. examining B. being examined C. examined D. examine 10. Mike has got us

13、ed _ up late at night. (stay up) A. to sit B. X C. to sitting D. sitting,11. Once the heart stops _, death follows at once. A. beating B. to beat C. being beaten D. to be beating 12. We are now busy _ for the examination. A. to prepare B. preparing C. prepared D. being prepared,13. The patient must

14、be separated to avoid (避免) _ others. A. being infected(感染) B. infecting C. to infect D. infected 14.Your clothes need _. A. washed B. to be washed C. to wash D. being washed,15. _ provides us with essential（基本的） nutrients (营养), while _ provides us with oxygen. A. To eat; breathing B. Eating; to breathe C. Eating; breathing D. Eaten; breathed,1. All the staff on our company are considering _to the city centre for the fashion show. (2007年上海春) Ato go Bgoing Cto have gone Dhaving gone,高考链接,2. Peter received a letter just now _ hi