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1、动名词作句子的主语或者宾语一. 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。如：do-doing, be-being, ask-asking, etc.否定形式：not+ -ing 构成二. 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。动名词：在句子中起名次作用，可作主，宾，表，定的成分。1 The ving form used as subject:It is necessary to get water from wet to dry place._It cost nothing
2、 to wish for thing._2 .The ving form used as object1) v+objectHe likes helping others.只接 v-ing 作宾语的动词有：admit, allow, avoid, appreciate, consider, delay, escape, enjoy, finish, keep, imagine, mind, miss, practice, suggestHe suggested practising speaking English in and out of class.2) prep.+ object.只接
3、 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 toHe has devoted his life to finding ways to grow more and more rice.三. 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：Its no use doing Its no good
4、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, 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“ al
5、lowadviseforbidpermit 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 needsrequires wants cleaningto be cleaned 4. 在 begin, continue, love, like, hate, prefer, intend, start 后用动名词和用不定式作宾
6、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。 try doing 试着做某事 try to do 努力做某事be used to doing 习惯于做某事 be used to do 被用来做某事cant help doing 禁不住做某事 cant help to do 不能帮助做某事1. Lets
7、 have a rest Not now. I dont want to stop _ yetA. study B. to study C. for studying D. studying 2. 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 3.It took the workmen only two hours to finish _ my car. A. repa
8、iring B. repair C. to repair D. repaired4. Have you forgotten _$1000 from me last month? Will you please remember _ it tomorrow? A. borrowing; to bring B. to borrow; bringC. borrowed; bringing D. borrowing; bringing5.My brother keeps _ me with my work.。 A. to help B. help C. helping D. helped6. We s
9、hould often practise _ English with each other.A. to speak B. spoke C. speak D. speaking7. The story was so funny that we _. A. couldnt help laugh B. cant but laugh C. couldnt help laughing D. couldnt help but to laugh8. Though it sounds a bit too dear (昂贵), it is worth _. A. being bought B. buying
10、C. to buy D. buying it9. He devoted his life to _ the atomic theory. A. study B. be studied C. studying D. have studied10.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 vocation11. The microscope is used for_ minute (微小的
11、) objects. A. examining B. being examined C. examined D. examine12.Mike has got used _ up late at night. (stay up) A. to sit B. X C. to sitting D. sitting13.Once the heart stops _, death follows at once. A. beating B. to beat C. being beaten D. to be beating14. We are now busy _ for the examination.
12、 A. to prepare B. preparing C. prepared D. being prepared15. The patient must be separated to avoid (避免) _ others. A. being infected(感染) B. infecting C. to infect D. infected16.Your clothes need _. A. washed B. to be washed C. to wash D. being washed17. _ provides us with essential nutrients (营养), while _ provides us with oxygen. A. To eat; breathing B. Eating; to breathe C. Eating; breathing D. Eaten; breathed18. All the staff on our company are considering _to the city centre for
