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。
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。
结果状语从句
结果状语从句常由so…that 或 such…that引导。so…that与such…that之间可以转换。例如:
让步状语从句
1)though, although引导的让步状语从句,后面的从句不能有but,但是 though 和yet可连用。例如:
条件状语从句
连接词主要有 if, unless, as/so long as, on condition that 等。if 引导的条件句有真实条件句和非真实条件句两种。非真实条件句已在虚拟语气中阐述。
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