求教!1.---Has Linda come back from Cannda?---Yes.She _____ther

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求教!
1.---Has Linda come back from Cannda?
---Yes.She _____there for eight years.
A.has stayed B.stays C.stayed D.had stayed
2.---Have you seen my e-mail about TESLproject?
---Yes.Luckily i checked my e-mail yesterday.Normally i ____my e-mail box for days.
1.C
2.D
两题都有“FOR”,为什么选择的时态不同?“for”的用法是什么?
不好意思，第二题答案是：don't checked

第二题我就不讲了,这是完成时的常规用法.
第一题,注意come back表明她已经不在那里了.就不能用完成时态,只能用一般过去时.所以选C.答句中,意思是【她过去曾经在加拿大生活】,“过去”指代“回来之前”.因此,用一般过去时态,表达过去事件.

注：这种考法在时态题中是高频出现,所以请你务必牢记.

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