Question

He with his mother is shopping.为什么是is不是are。详细点说

Answer 1

主谓一致，with his mother 是状语，句子主干主语He，谓语is，表语shopping。类似的along with，rather than，besides，apart from，as well as类似的主谓一致谓语由主语决定

Answer 2

he是主语his mother只是伴随，如果不用with用and则是并列就要用are

Answer 3

主语是He,特指他，with his mother是修饰He这个主语的状语，所以主语是一个人，用is

Answer 4

因为主语是he，with his mother 只是用来修饰he的，所以用is

Answer 5

因为主语是his，后面的with his mother 是伴随语