I ask him if he wii come to my party when he has time nest Sunday.请问这是个什么从句.哪个是从句哪个是主句、为什么if后面是一般将来时而when后面是一般现在时呢.这个是怎么用的啊.

问题描述:

I ask him if he wii come to my party when he has time nest Sunday.请问这是个什么从句.
哪个是从句哪个是主句、为什么if后面是一般将来时而when后面是一般现在时呢.这个是怎么用的啊.