He is trying to move the book shelf.

他正试图搬动那个书架。

He searched the book shelf after shelf.

他一个书架接一个书架地找那本书。

I have a nice book shelf.

我有一个好看的书架。

Tidy the book shelf.

整理好书架。

Where is his book? It's in the book shelf.

他的书在哪里？——在书柜里！