make sure后跟什么句子(分几种类型)
问题描述：
make sure后跟什么句子(分几种类型)
答
make sure:vi.弄明白(查明白)例句与用法:1.I tried to make sure of the problem.我想把这个问题弄明白.2.To make sure that he was at home,I called him up in advance.为了确定他在家,我事先打电话给他.3.Make su...