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  • the robots have been sent to repair the damaged nuclear power station in Japan

    the robots have been sent to repair the damaged nuclear power station in Japan
    It was the first time that the robots __have been sent____________ to repair the damaged nuclear power station in Japan.橫線處為什么用現(xiàn)在完成時?
    橫線處改為 had been sent
    不好意思打錯了
    英語人氣:451 ℃時間:2019-10-10 04:54:15
    優(yōu)質(zhì)解答
    had been sent是對的.it was the ,time that 用過去完成時.改為 were sent 可以嗎這是固定的。如果前面是一般現(xiàn)在時就用現(xiàn)在完成時。
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