He must try to help his sister with her math?为什么try不加s
问题描述:
He must try to help his sister with her math?为什么try不加s
答
must是情态动词,后面只能接动词原形
答
must情态动词,后跟动词原形
答
既然大家都说了 我就不回答了 嘿嘿
答
must 后 加 动词原形
答
must是情态动词 后面加动词原形 所以不加s