注意:如果主句的动作发生于表示当时的时间状语从句中的动作的进行过程中,从句常用进行时。例如:The landlady suspected that someone must have broken into the house when/while/as she was watching TV show. 女房东怀疑在她看电视时曾有人闯入屋里。// When/While/As Tom was reading, Jim was arrested. 在汤姆看书的时候,吉姆被逮捕了。
[考题5] I ____ along the street looking for a place to park when the accident ____.
A. went; was occurring B. went; occurred
C. was going; occurred D. was going; had occurred
[答案] C
[解析] 根据题干句子含义,事故发生于当我沿街行驶、寻找停车之处的时候;从句的动作发生在主句动作的过程中。主句的谓语动词go表示非延续性的动作,可以持续进行,应选用过去进行时的形式,从句的谓语动词为非延续性动词,应以一般过去时的形式表结果。
2. before和after 引导的时间状语从句分析:
before引导时间状语从句时表示主句的动作发生在从句动作之前,after引导时间状语从句时表示主句的动作发生在从句动作之后。例如:See me before you leave. 在你离开之前来见我。// Before they drive any of the buses, they will have to pass a special test. 在驾驶公共汽车之前,他们必须通过专门测验。// I saw them after I arrived. 在我抵达之后,我见到了他们。// I found his pen after he has left. 在他走后,我找到了他的笔。
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