what did the color of the floor use to be还是What is the color of floor used to be 哪个对?

分类: 作业答案 • 2021-12-29 16:59:27

问题描述：

what did the color of the floor use to be还是What is the color of floor used to be 哪个对?
为什么

答

这句话的回答形式是 the color of the floor used be to do sth……这个颜色的地板过去是做……用的所以当问问题时,把 do 提前,这里是过去式（过去曾经是）,就是第一种问法啦~如果是第二种问法要去掉used to be What...