和谐英语

英语语法大全-特殊词精讲1

2007-10-21来源:
        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。