1."In fact,we used to call each other 'Old Friend'--when we'

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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?

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.”

1."In fact,we used to call each other 'Old Friend'--when we' we used to see each other we used to be dear to each other.意思 We always used to talk to each other naturally. We are——（friend,friendly）to each other. when will we get to know each other well? we often shake hands when i----- to each other We forget each other in each Can we talk to each other in english ?是什么意思 we were in rooms right n----- to each other 填空：John is my oldest friend.We met each other when I began t we often exchange our ______(greet)when we see each other in