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英语句子辨析 急.I received two cards .They are all great.I have rec

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英语句子辨析 急.
I received two cards .They are all great.
I have received two cards.They are all great.
为什么第一句是错的,第二句是对的?
英语句子辨析 急.I received two cards .They are all great.I have rec
时态不一致,第一句改为were
再问: 不好意思 , 那再问一句. 如果一篇文章是这样,. I went to Beijing last Friday . Beijing is/was beautiful ?
再答: Beijing is beautiful 客观事实啊,后面如果接着写北京现在如何如何,后面全部用过去时; 如果写上周在北京做了什么什么之类,全部用过去式。要看表达需要,时态是个复杂的问题