The bookcase is behind the door 改为一般疑问句并做否定回答

问题描述:

The bookcase is behind the door 改为一般疑问句并做否定回答

肯定句改疑问句,只需要把be(is am are)动词提前。
Is the bookscase behind the door?
No,it isn't/Yes,it is.

问:Is the bookcase behind the door
答:No,it isn't