be sure to do sth和be sure of doing sth的区别
问题描述：
be sure to do sth和be sure of doing sth的区别
答
分析下面两个句子：1）He is sure to take good care of himself.2）He is sure of taking good care of himself.以上两个句子所表达的意思是不同的.句1）的意思是“他谅必会照料好自己”；句2）的意思是“他自信会...