be sure of 与 be sure about 的区别,
问题描述：
be sure of 与 be sure about 的区别,
答
be sure of 确信
例句：She looked over her shoulder to be sure of her footing.她扭头看了看后面以确认自已是否站稳了.
be sure about 对.很有把握
例句：You can be sure about their interest in it.你可以肯定他们对引很感兴趣.