for certain 确定无疑地

【讲解】

此语意为“确定无疑地”，作为副词短语作状 语,修饰动词,常与know, say等词连用，例如：I cannot say for certain when he will ar-rive.(我说不准他什么时候来。）动词短语 make certain指“弄清楚,弄明白”，例如:He makes certain that all the facts are correct.(他査明所有事实都正确无误。)

【对话】

A:How're you going to prepare for the test?

A:你想怎样复习来准备这场考试？

B:Well, I'm not going to learn the grammatical rules by heart.

B:嗯，我不会去背语法规则的。

A:But those are exactly the things I was going to do.

A：可这正是我要做的。

B:No, you don't have to do that. The teacher is going to examine the language skills, not language knowledge.

B:不，用不着。老师要考的是语言技巧，不是语言知识。

A:Are you sure?

A：你敢肯定？

B:I say this for certain.

B：绝对肯定。