题目内容：

be sure of doing sth和make sure of doing sth有区别吗?
请详解make sure和be sure的用法,

优质解答

be sure的用法对be sure的用法常感困惑不解,现将其主要用法归纳如下.1．be sure＋of／about+动名词或名词,意为“确信……”；“对……有把握”.但在接名词时,be sure of侧重指主语对某抽象事物的确信无疑；而be sure...