概要：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 restedB. resting C. to restD. 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。stop doing/to doforget doing/to doforget 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 c
小升初英语语法知识要点：动词不定式(五),标签：小升初英语试卷及答案,http://www.kgf8.com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。
stop doing/to do
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。
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