In addition to整个词组相当于一个介词,所以to的后面要接宾语.例如:
In addition to native plants,this garden contains numerous trees and flowers from overseas.
除了当地的植物之外,这座花园还有无数来自海外的花草树木.
"In addition to" 后面可接句子.except 除...以外,...不包括在内(意味着从整体中减去部分)
He gets up early every day except Sunday.除星期天以外,他每天都起得很早.
We all went to see the film except John.除了约翰,我们都去看了电影.