1."In fact,we used to call each other 'Old Friend'--when we'd meet,that is."
问题描述：
1."In fact,we used to call each other 'Old Friend'--when we'd meet,that is."
这句话后一句when……that is,是什么结构?‘d是would 还是had?
2.A half hour (went by) before the manager returned to the meeting hall.
为什么不填had gone by?
答
1.应该是would .如果是had ,后面应该用met ,而不是meet.不是什么特殊的结构,只是语序换了一下.that is 只是起到具体说明 we used to call each other "old friend"的作用.译为“ 实际上,我们过去常叫对方老朋友——那是指在我们能见面的时候.”