I first met Lisa three years ago when we------at a radio station together .

题目

I first met Lisa three years ago when we------at a radio station together .
i first met Lisa three years ago when we------at a radio station together .A have worked B had been working C were working D had worked
我知道答案是C 但是我们老师讲的时候说when后面要加过去形式 while后面加过去进行时 如果这么说应该填worked 但是为什么是was working

答案

when and while 在这个时候用法和意思是一样的,而且这是个状语从句,表达在某一段时间内发生的另一件事情.如果答案中有worked选项的话,那也是正确答案哦.因为work本身就是一个可以表达持续长时间的一种工作的意思.看怎么理解了,选项中只有C是正确的哦.希望我可以帮助你.PS 我也是英语老师哦.