must have do 句型,比如when i suggested that some villagers must have come in for free drink这里为什么用must have come啊?不用过去式吗?这是什么句型这句话?

must have do 句型,比如when i suggested that some villagers must have come in for free drink这里为什么用must have come啊?不用过去式吗?这是什么句型这句话? 请问must to do sth?句型对吗? have在句型里能不能代替must? have to do sth 句型造句 there must have句型?有这个句型吗?最好再有个例句,那there have 修改病句：1.Do you like rices?2.What do you have about breakfast?3.Wh have to do和must的区别 能用must have to do sth 吗? must have done 表示猜测 那 must do 表示什么 What do you have ti do 什么句型 do you have any regrets in the relationship with your parents or friends wh must have done,must do,can't have done,can't do的区别 have to do和must to do可互换吗? 初一英语句型转换比如：like to do sth 英语中的几个语法问题1.have的相关用法?比如“我已经吃了”,是用过去式还是用have+do表示已经完成某事了呢?还有一些have do have done had do had done等等份不清楚.2.must的用法?什么时候用must be ?最 有没有have sth.to do 这个句型 have the right to do something 这个句型是什么意思? have to do sth是句型还是短语?