must 后面是加do sth.还是 to do sth.
问题描述：
must 后面是加do sth.还是 to do sth.
有没有人呐、
答
must 是情态动词,你就把它想成跟can ,may 一样,后面肯定加do.所以must 的结构是 must do sth.
-----------------------------------------------------over-------------------------------------------------------------