certain

['sə:tn]

adj.确定的, 肯定的, 某事, 某人, 某种, （与人名连用,表示不认识此人）一位叫..., 特定的, 轻微的, 微小的
pron.某些, 某几个

例句与用法：

For certain reasons I will be unable to attend the meeting.

因为某种原因，我不能出席这次会议。

I can't say for certain when he will arrive.

我说不准他什么时候会来。

It's certain that every effect must have a cause.

无疑，每个结果必定有其原因。

详细释义：

a.

1. 确凿的, 无疑的; 可靠的

2. 确信的, 有把握的; 一定会的[F][(+of/about)][+(that)][+wh-][+to-v]

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)[B]

A certain person called on you yesterday.

昨天有个人来拜访过你。

4. 某种(或一定)程度的[B]

pron.

某几个; 某些[(+of)]

短语词组：

for certain

1. 肯定地

I don't know for certain.

我无法肯定。

make certain

1. 确定

Please make certain when the train leaves.

请确定火车什么时候开。