have to do和must to do可互换吗?
have to do和must to do可互换吗?
have to do和must的区别
能用must have to do sth 吗?
must to do sth 和 have to do sth和need to 的用法
warn sb not to do warn sb against doing 可互换吗
have to 和must 的区别是什么记住,一定要直观,比如是 I must还是have to do my homew
have to ,时态,Must,it is/was neccesary to do
Do you have to finish it tiday?这里have to可以换成must或者need吗?
You do not have to come everyday.这里have to可以换成must或者need吗?
have sb do/doing/done/to do的意思 have sb do 和have sb to do有区别吗
have to do .should do .ought to do .must.的区别
must have done 和must have do