1、铅笔盒的英文:pencil box; pencil case; pencil-case。
2、这学期我还得买新书包和铅笔盒。
This term, I also had to get a new schoolbag and pencil case.
3、给你,一个铅笔盒和一本笔记本。
Here you are, a pencil-case and a notebook.