问add to ,add up ,add up to,的区别和用法并解题His report has greatly __our knowledge of the subject.

问题描述:

问add to ,add up ,add up to,的区别和用法
并解题His report has greatly __our knowledge of the subject.

用add to :增加,添加了
翻译:他的报道大大增加了我们对那门学科的理解.
add up=add together:合计,加起来
add up to :合计等于