汉译英：你为什么不同意她？

Why do you disagree with her?

Why didn`t you agree with her?

or why didn`t you agree her of...?

why do you disagree with her?

How come you don't agree with her?或
Why don't you agree with her?

how come的用法大部分等于why,但不像why用法那么广,句子结构使用陈述语序,不需要倒装.比较口语，比较地道的美语。根据语境选择使用那一个，懂得两个用法，就不那么死板了哈～～

Why do not you with her?