它们后面有一些书柜。

There are some bookcases behind them.

我的书和磁带在书柜里。

My books and tapes are in the bookcase.

教室里有书柜吗？

Does the classroom have a bookcase?

它们也在书柜里吗？

Are they in the bookcase, too?

这个书柜是我爷爷做的。

This bookcase was made by my grandfather.

她在书柜上找到了那本书。

She found the book on the bookcase.

书柜必须直立以防止倒塌。

The bookcase must be upright to prevent it from falling over.

我把所有的书都放在书柜里。

I put all my books in the bookcase.

这个书柜太高了，我够不到顶层。

This bookcase is too tall; I can't reach the top shelf.

我们需要一个新的书柜来存放这些书。

We need a new bookcase to store these books.