两个词组的区别
问题描述：
两个词组的区别
be sure of 以及be sure about有什么区别呢?
答
be sure of 后只能加宾语,例如I am sure of it.
be sure about后面可以加动名词做宾语.也可以加从句.I am sure about that he will pass the exam./ I am sure about doing sth.