when i ask why the sentence use rather..than.. I can't explain exactly.
Mexico’s President Canceled His Meeting With Trump Rather Than Pay For The Wall
一.why 能引导下列几种从句
1.主语从句 Why he took Chinese nationality in 1901 is a question that interests us.
Why he love the girl deeply?
2.宾语从句
He asked her why she was doing that.
3.表语从句
that's why I fall in love with you.
4.状语从句
No matter why she became angry with you, you should apologise to her.
二, why 作疑问词 用来向对方问及原因
你我他的提问
A:why are you going to do tomorrow?
why hasn't he brought the whisky?
why don't you look where you are going?
why can't I remember the exact year we married?
物:
why the clothes are dirty?
PS :http://gaokao.xdf.cn/201109/878805.html
Still confused.