He was caught in a traffic jam and by the time he reached the airport his friend's plane ( ).A.has alread taken off B.had already taken off C.has been taken offD.had been taken off
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![He was caught in a traffic jam and by the time he reached the airport his friend's plane ( ).A.has alread taken off B.had already taken off C.has been taken offD.had been taken off](/uploads/image/z/8714354-50-4.jpg?t=He+was+caught+in+a+traffic+jam+and+by+the+time+he+reached+the+airport+his+friend%27s+plane+%28+%29.A.has+alread+taken+off+B.had+already+taken+off+C.has+been+taken+offD.had+been+taken+off)
He was caught in a traffic jam and by the time he reached the airport his friend's plane ( ).A.has alread taken off B.had already taken off C.has been taken offD.had been taken off
He was caught in a traffic jam and by the time he reached the airport his friend's plane ( ).
A.has alread taken off B.had already taken off C.has been taken off
D.had been taken off
He was caught in a traffic jam and by the time he reached the airport his friend's plane ( ).A.has alread taken off B.had already taken off C.has been taken offD.had been taken off
答案选B.
解析:由句中的was caught可知该句为一般过去时,结合语境,可知当他赶到机场的时候,朋友的飞机已经起飞了,因此应该为过去完成时态,排除选项A和C.
take off表飞机起飞,不存在被动语态,因此排除选项D,所以选择B.
这里考察的是“by the time”的用法,当这个短语后面接的是过去时,那么动词要用过去完成时,老师应该讲过。
再者,take off是没有被动式的,所以选B
He was caught in a traffic jam and by the time he reached the airport his friend's plane (B
take off没有被动,,起飞
希望对你有帮助,没有清楚采纳.