He reached down for his bag, pulled out a pencil case.

他伸手去拿包 掏出一个铅笔盒

In the big big bag, there is a big big pencil case.

在一个大大的书包里，有一个大大的铅笔盒。

I can't find my pencil case. It could be still at school.

我不能找到我的铅笔盒，它可能还在学校中。

Put the pencil case in my bag.

把铅笔盒放进我的书包。

My keys are in the pencil case.

我的钥匙在文具盒里。

May I have that pencil case?

我可以要那个铅笔盒吗？