铅笔盒的英文：
pencil case

参考例句：

How much is this pencil-box?
这个铅笔盒多少钱?

I have put the pencil box in her desk.
我已经把铅笔盒放在她的课桌里了。

Has anyone claimed this pencil box?
有人认领过这个铅笔盒吗？

pencil是什么意思：
n. 铅笔，色笔，画笔
v. 用铅笔写或涂

Please sharpen this pencil.
请削一削这只铅笔。

I have but one pencil.
我只有一支铅笔。

Please issue everyone with a pencil.
请给每人发一支铅笔。

Pencils are graded according to softness.
铅笔根据硬度分类。

Nobody else has a pencil sharpener.
再没有谁有卷笔刀了。