be supposed to do sth的否定形式
be supposed to do sth的否定形式
be supposed to do sth
be supposed to do的否定为什么?
be supposed to do sth 与 be supposed to have done sth的区别
用be supposed to do sth造句
be suppose to do sth还是supposed
区分一下sth be supposed to do和sth be supposed to be done
be used to do sth.否定形式是什么?
It+be+形容词+动词不定式(to do sth)的否定形式是什么?
used to do sth的疑问形式和否定形式
用be supposed to do sth句型造十个句子
be consided to do sth 和be supposed to do sth 有什么区别