英语判断句1.What did you do yesterday evening?2.Have you posted the letter for me?请判断这两个句子,然后分析,不对的请做分析,第一句的正确答案是:What were you doing yesterday evening?为什么不能用过去时呢; 而

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英语判断句1.What did you do yesterday evening?2.Have you posted the letter for me?请判断这两个句子,然后分析,不对的请做分析,第一句的正确答案是:What were you doing yesterday evening?为什么不能用过去时呢; 而
英语判断句
1.What did you do yesterday evening?2.Have you posted the letter for me?请判断这两个句子,然后分析,不对的请做分析,
第一句的正确答案是:What were you doing yesterday evening?为什么不能用过去时呢; 而第二句的我觉得posted是短暂性不适合完成时态

英语判断句1.What did you do yesterday evening?2.Have you posted the letter for me?请判断这两个句子,然后分析,不对的请做分析,第一句的正确答案是:What were you doing yesterday evening?为什么不能用过去时呢; 而
1.过去时
你昨晚干什么了?已经做了,但做的什么不清楚
2.现在完成时
我的信你寄出去了没?
不知道是否已经寄出.