The plane before they the airport
The plane____before they___the airport
A.had taken off...reached B.has taken off...reached
C.took off...had reached D.was taking off...have reached
不及物动词(短语)无被动语态,排除D 接下来怎么选
人气：417 ℃ 时间：2019-10-27 17:37:08
解答
A
reached(过去) had taken off (过去的过去 用过去完成时）
请及时采纳,不懂继续问( 天天在线 ）为什么不能是C呢,飞机起飞之前他们就到了,同样是过去完成时注意before “在。。。。之前显然从句的谓语动词所表的动作在主句之后
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