Shall we go to Beijing if_tomorrow.A.is going to rain B.is to rain C.rains D.rained

问题描述:

Shall we go to Beijing if_tomorrow.A.is going to rain B.is to rain C.rains D.rained

A,B表示将来,D是过去式;If条件句中用一般现在时表示将来.也就是:主句将来时,时间条件从句现在时.