2014年PETS二级考试:语法讲解(7)

2014-04-13 21:12:00来源:网络

  过去完成时典型例题

  The students ___ busily when Miss Brown went to get a book she ___ in the office.

  A. had written, left

  B. were writing, has left

  C. had written, had left

  D. were writing, had left

  答案D. "把书忘在办公室"发生在"去取书"这一过去的动作之前,因此"忘了书"这一动作发生在过去的过去,用过去完成时。句中when表示的是时间的一点,表示在"同学们正忙于……"这一背景下,when所引导的动作发生。因此前一句应用过去进行时。

  注意:

  had no … when 还没等…… 就……

  had no sooner… than 刚…… 就……

  He had no sooner bought the car than he sold it.


更多>>
更多课程>>
更多>>
更多内容

英语学习资料大礼包

加微信免费领取电子版资料

生活口语流利说
更多>>
更多公开课>>
更多>>
更多课程>>