8. 特殊词精讲

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。
　　they stop to smoke a cigarette.　 他们停下来，抽了根烟。
　　i must stop smoking¹..　　　　　 我必须戒烟了。

典型例题
　 she reached the top of the hill and stopped ___　on a big rock by the side of the path.　
a. to have rested　b. resting　 c. to rest　d. rest
答案：c。由题意可知，她到了山顶，停下来在一个路边的大石头上休息。因此，应选择"stop to do sth. 停下来去做另一件事"。而不仅仅是爬山动作的终止，所以stop doing sth.不正确。

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。
　　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。

典型例题
　 she reached the top of the hill and stopped ___　on a big rock by the side of the path.　
a. to have rested　b. resting　 c. to rest　d. rest
答案：c。由题意可知，她到了山顶，停下来在一个路边的大石头上休息。因此，应选择"stop to do sth. 停下来去做另一件事"。而不仅仅是爬山动作的终止，所以stop doing sth.不正确。
8.2 forget doing/to do

　forget to do　忘记要去做某事。　(未做)
　forget doing　忘记做过某事。　　(已做)
　the light in the office is stil on. he forgot to turn it off.
　办公室的灯还在亮着，它忘记关了。(没有做关灯的动作)
　he forgot turning the light off.
　他忘记他已经关了灯了。　　　 ( 已做过关灯的动作)
　don't forget to come tomorrow.
　别忘了明天来。　　　　　　　　 (to come动作未做)

典型例题
　---- the light in the office is still on.
　---- oh，i forgot___.　　　　　　　　　　
　 a. turning it off　 b. turn it off　 c. to turn it off　 d. having turned it off
　 答案：c。由the light is still on 可知灯亮着，即关灯的动作没有发生，因此用forget to do sth.
而forget doing sth表示灯已经关上了，而自己忘记了这一事实。此处不符合题意。
8.3 remember doing/to do

　remember to do 记得去做某事　　　　 (未做)
　remember doing　记得做过某事　　　 (已做)

remember to go to the post office after school.
记着放学后去趟邮局。
don't 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　 对要做的事遗憾。　　　　　(未做)
regret doing　 对做过的事遗憾、后悔。　　(已做)
　　i regret 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 don't regret telling her what i thought.　
我不为告诉她我的想法而后悔。

典型例题
---you were brave enough to raise objections² at the meeting.
---well, now i regret ___ that.
a. to do　 b. to be doing　 c.　to have done　 d.　having done
答案：d。regret having done sth. 对已发生的事感到遗憾。regret to do sth. 对将要做的事感到遗憾。本题为对已说的话感到后悔，因此选d。
8.5 cease³ 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。

　　that department has ceased⁴ to exist forever.
　　那个部门已不复存在。
　　the girls ceased chatting for a moment when their 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。

you must try to be more careful.
　你可要多加小心。
i tried gardening⁵ but didn't 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 maths，he went on 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"。