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进行时态:
重点区分when和while引起的时间状语的用法。
When表示时间上的点,在考试中其引导的时间状语从句多翻译为“这时?”,主句多用进行时态;while引导的时间状语从句多翻译为“正当……时”,该从句用进行时态。 例:One of the guards was sleeping when the general came in, which made him very angry.
I fell and hurt myself while I was playing tennis.
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