公共英语二级语法:过去完成时典型例题
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…… He had no sooner bought the car than he sold it. 相关资料 |