When Bob and his friends came,we were having our supper
问题描述:
When Bob and his friends came,we were having our supper
答
当鲍博和他的朋友过来时,我们正在吃晚饭
答
当鲍勃和他的朋友来的时候,我们正在享用晚餐。
then在这里是副词,表示“当时”。
答
当Bob和他的朋友来的时候,我们正在吃晚饭.