因此,在某些句子中,即使没有明确的过去时间状语,同学们也要能够辨别出应该用过去时态。比如“I didn't know David(was)in London.”,这句话意思是说话之前的“过去”我不知道大卫在伦敦...
② 到句中的逗号终止,如:(When I was young), I listened to the radio. ③ 到下一个修饰成分终止,如:I will invite Yao Ming (who was a top basketball player) to Beijing. (to Beijing是介词短语,属于另一个修饰成分,故从句的标记在此处终止) ④ 到下一个谓语动词...
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