The plane before they the airport
问题描述:
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
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