lf从句谓语动词和主句谓语的动词lf从句谓语动词 主句谓语的动词pastpresentfuture
问题描述：
lf从句谓语动词和主句谓语的动词
lf从句谓语动词 主句谓语的动词
past
present
future
答
是虚拟语气吗？
If i had been there,i woule have helped you .
If i were you,i would go shopping now.
If it should be done by tomorrow,i would do it from now on.
答
if 引导条件状语从句 “主将出现”——主句将来时从句一般现在时