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最佳答案:1.I have been sitting in the classroom for a few hours.2.It has been very hot un
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最佳答案:He has already turned off the light.
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最佳答案:这是我第一次看见一只老虎这是他第一次说过他爱我
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最佳答案:我表兄已经去北京一个月了My elder cousin has been in Beijing for a month!(不可用 to,那是指已经回来了!)
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最佳答案:这个never 和more是一起用的,表示强调的意思.这个问题从未(像现在)如此迫切.
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最佳答案:It has already been eight o'clock .
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最佳答案:i have not been sure
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最佳答案:My brother has gone swimming(没有to)
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最佳答案:My heart is tired and my dream is drunk哪有用现在进行时表述很累的啊?很累就是用tire 的过去式tired 作形容词,没
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最佳答案:我认为用现在完成进行时比较好I have been speaking in a really low speed.