题目是把两句话连成一句Wedidnotdisturbhim(until)Hefinishedwork.1.WedidnotdisturbhimuntilHehadfinishedwork.2.WehadnotdisturbedhimuntilHefinishedwork.哪句正确为什么?书上有一句例句:Ihadnotunderstood

Question

题目是把两句话连成一句 We did not disturb him (until) He finished work.
1.We did not disturb him until He had finished work.
2.We had not disturbed him until He finished work.
哪句正确为什么?
书上有一句例句 :I had not understood the problem until he expained it.有一位高手说书上的例句错了.

Answer 1

书上的没错.第二个是正确的啊.not……until是“直到……才……”.直到他完成作业我们才去打扰他.也就是说,打扰他发生在完成作业之后,那么句中finish用的是过去式finished,而“打扰”是过去的过去,应该用过去完成时,had +动词过去分词