作者keyaire (绽放)
看板TOEIC
标题Re: [讨论] 2题文法时态问题与观念 请教大家^^
时间Sat Oct 10 04:20:26 2009
根据蓝本Azar所写的 过去式和完成式 的差别有一点就是时间的明确性
Simple Past : At one particular time in the past.
It snowed
yesterday.
Present Perfect: The excat time is not important.
Tom has already eaten.
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