use形容词 adj
1.确信的,有把握的
I'm not sure whether our team will win.
我不能肯定我队是否能赢.
We are sure of his innocence.
我们确信他是无辜的.
2.一定的,必定的
She is sure to write to you.
她一定会给你写信的.
3.确实的;可靠的
One thing is sure, he won't let you down.
有一点是确定的,那就是他不会让你失望.
Exercise is a sure way of losing weight.
运动是减肥的可靠办法.
certain 作adj
1.确凿的,无疑的;可靠的
2.确信的,有把握的;一定会的
They are certain to succeed. (They are certain of success.) (They are certain that they will succeed.)
他们确信会成功.
I'm quite certain of that.
对那事我完全可以肯定.
I was certain that he had seen me.
我肯定他已看见了我.
3.某,一位姓...的(人)
A certain person called on you yesterday.
昨天有个人来拜访过你
