In addtionion to 和as well as 用法有什么不同?

in addition表示除了什么东西还有什么东西，相当于besides....表示补充说明。
as well,也.eg: he likes music, and he likes books as well.

这两者并没有什么共同性，所以很容易区分开来的。别担心。

In addtionion to 表示‘除……以外’，而as well as 表示‘…和…’。如：Everyone went there in addtionion to Tom.除了Tom，其他每个人都去了。
Jack runs fast as well as Sam.Jack跑得和Sam一样快。