be 和do怎么用
be 和do怎么用
do动词和be动词怎么用?
be和do怎么区分用法?
be about to do怎么用
be to do表将来怎么用
用 be doing 和be doing to do 造句 三个
I,I’m,me,有什么区别?do,does又怎么用?be和was怎么用?
be allowed to do sth和allow sb to do sth有什么区别?怎么运用?
用be eager to do sth.和be willing to do sth.造句
怎么区分谓语动词,to do doing done 和to be doing to be done to have do
Be动词和助动词Do,
be going to do与be do 怎么区别呢?