I use chinese to input normal text in latex .
And in math mode we almost use english .

I use `shift' to switch between chinese and english .

So now I use shift too frequently , my shift key is not sensitive .

How to make emacs switch automatically ?

When in math mode , emacs switchs to english .
When in normal text ,emacs switchs to chinese.

Can here anyone give some instructions of doing this ?

I know there is function `texmathp' in auctex which determines if point is inside latex mode .

Thanks