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1、8.1 stop doing/to do stop to do停止，中断做某事后去做另一件事，stop doing停止做某事。例如：They stop to smoke a cigarette. 他们停下来，抽了根烟。I must stop smoking. 我必须戒烟了。8.2 forget doing/to do forget to do忘记要去做某事，forget doing忘记做过某事。例如：The light in the office is stil on. He forgot to turn it off. 办公室的灯还在亮着，他忘记关了。（没有做关灯的动作）He forgot
2、turning the light off. 他忘记他已经关了灯了。（已做过关灯的动作）8.3 remember doing/to do remember to do 记得去做某事，remember doing记得做过某事。例如：Remember to go to the post office after school. 记着放学后去趟邮局。Dont you remember seeing the man before? 你不记得以前见过那个人吗?8.4 regret doing/to do regret to do对将要做的事遗憾，regret doing对做过的事遗憾、后悔。例如：I r
3、egret to have to do this, but I have no choice. 我很遗憾必须这样去做，我实在没有办法。I dont regret telling her what I thought.我不为告诉她我的想法而后悔。8.5 cease doing/to do cease to do 长时间，甚至永远停做某事，cease doing 短时停止做某事，以后还会接着做。例如：That department has ceased to exist forever. 那个系已不复存在。The girls ceased chatting for a moment when th
4、eir teacher passed by. 姑娘们在老师走过时，停了会聊天。8.6 try doing/to do try to do努力，企图做某事，try doing试验，试着做某事。例如：You must try to be more careful. 你可要多加小心。 I tried gardening but didnt succeed. 我试着种果木花卉，但未成功。8.7 go on doing/to do go on to do做了一件事后，接着做另一件事，go on doing继续做原来做的事。After he had finished his math，he went on
5、 to do his physics. 做完数学后，他接着去做物理。Go on doing the other exercise after you have finished this one. 作完这个练习后，接着做其他的练习8.8 be afraid doing/to do be afraid to do不敢，胆怯去做某事，是主观上的原因不去做，意为怕，be afraid of doing担心出现doing的状况、结果。doing 是客观上造成的，意为生怕，恐怕。例如：She was afraid to step further in grass because she was afra
6、id of being bitten by a snake. 她生怕被蛇咬着，不敢在草丛中再走一步。She was afraid to wake her husband. 她不敢去叫醒她丈夫。She was afraid of waking her husband. 她生怕吵醒她丈夫。8.9 be interested doing/to do interested to do对做某事感兴趣，想了解某事，interested in doing 对某种想法感兴趣，doing 通常为想法。例如：I shall be interested to know what happens. 我很想知道发生了什
7、么事。（想了解）Im interested in working in Switzerland. Do you have any idea about that? 我对在瑞士工作感兴趣。你想过这事吗? （一种想法）8.10 mean to doing/to do mean to do 打算、想，mean doing意味着。例如：I mean to go, but my father would not allow me to. 我想去，但是我父亲不肯让我去。To raise wage means increasing purchasing power. 增加工资意味着增加购买力。8.11 be
8、gin（start） doing/to do begin / start to do sth /begin / start doing sth.1） 谈及一项长期活动或开始一种习惯时，使用doing。例如：How old were you when you first started playing the piano? 你几岁时开始弹钢琴？2） begin, start用进行时时，后面动词用不定式to do。例如：I was beginning to get angry。我开始生起气来。3） 在attempt, intend, begin, start 后接know, understand,
9、 realize这类动词时，常用不定式to do。例如： I begin to understand the truth。我开始明白真相。4） 事物作主语时。例如：The snow began to melt.雪开始融化了8.12 感官动词 + doing/to do 感官动词 see, watch, observe, notice, look at, hear, listen to, smell, taste, feel + do表示动作的完整性，+doing 表示动作的进行性。例如：I saw him work in the garden yesterday. 昨天我看见他在花园里干活了。
10、（强调我看见了这个事实）I saw him working in the garden yesterday.（强调我见他正干活这个动作）昨天我见他正在花园里干活。1She reached the top of the hill and stopped _on a big rock by the side of the path.A. to have restedB. restingC. to restD. rest2- The light in the office is still on.- Oh，I forgot_.A. turning it offB. turn it offC. to
11、turn it offD. having turned it off3-You were brave enough to raise objections at the meeting. -Well, now I regret _ that.A. to do B. to be doing C.to have done D.having done4They knew her very well. They had seen her _ up from childhood.A. grow B. grew C. was growing D. to grow5The missing boy was l
12、ast seen _ near the river.A. playing B. to be playingC. playD. to playCCDAA1. Early to bed and early to rise _ a man healthy, happy and wise.a. making b. to make c. make d. makes2. Mathematics _ the language of science.a. is b. has been c. are d. have been3. The young _ the vital forces in our socie
13、ty.a. is b. has been c. are d. have been4. Every man, woman and child _ some history, enough at least, to survive in the world.a. knows b. know c. is known d. are known5. None of them _ my friends.a. is b. are c. was d. has been 6. Not only the whole nation, but the whole Europe , indeed the whole h
14、uman society _ to alter its attitude to racial problems.a. need b. needs c. has a need d. have a need7. Getting to other planets or to the moon _ many problems.a. involve b. involves c. involving d. to involve 8. . In that country, the rich _ richer, the poor, poorer. a. become b. has become c. beco
15、mes d. is becoming9. . The project requires more labor than _ because it is extremely difficult.a. has been put in b. have been put in c. being put in d. to be put in 10. Not one in one hundred children exposed to the disease _ likely to develop it.a. should be b. must be c. is d. are 11. If only I _ there.a. have not been
