辨析 certain & sure
相同点:
1. sb. be sure / certain about /of sth对某事有把握
例 I think so, but I am not sure /about it.
(我是这么想的,但没有把握。)
2. sb. be sure / certain +从句 某人对......有把握
例 I am sure /certain that he’ll come tomorrow.
(我确信他明天会来。)
3. sb/sth. be sure / certain to do sth. 有把握做某事; 一定会...
例 The problem is sure /certain to be solved.
(这个问题肯定会得到解决。)
以上sure与certain 可以换用。certain是根据客观事实或证据作出判断;sure是对事实作出的主观确信。