肯定的英文：
be sure
be certain
sure
certain
definite
confirm
affirm
affirmative

参考例句：

The answer is the affirmative .
答案是肯定的。

It's going to be an ambush.
那里肯定有伏兵。

If this is not affirmed, people will be disheartened
不肯定这一点，就泄气。

doubly protected;made doubly certain.
两重保护;双倍肯定

Bold self - assurance;effrontery.
厚颜无耻鲁莽的自我肯定;厚颜无耻

This is right off the top of my head.
这恰好是我不能肯定的。

Cheers! Oh, my God! This Mao-tai is certainly very strong.
干杯！哦，哎呀，这种茅台肯定很烈。

Likely but uncertain;plausible.
大概的可能但不能肯定的;似乎真实的

Definitely going to do sth; certain to do sth
肯定要做某事的;一定做某事的

negative pregnant
【律】暧昧的(带有肯定意味的)否认

sure是什么意思：
adj. 确信的，一定的，确实的
adv. 的确，一定，当然

brassard: "Sure, sure."
布拉萨尔:“当然，当然。”

Make sure you get there in time.
一定要准时到达那里。

Be sure not to let the truth slip.
千万别把真相泄漏出去。

certain是什么意思：
adj. 确定，确实，某事，轻微的，微小的
pron. 某些

Certain kinds of wine go with certain kinds of food.
某些酒与某些饭食相配。

To forbid trading in certain goods or with certain supplier
禁止做生意，禁止做某些商品的交易或禁止与某些供应商做买卖

Certain estates are labelled as undesirable.
某些物业被归入不受欢迎之列。

definite是什么意思：
adj. 清楚的；明确的；确切的；肯定的；有把握的

This definition is circular.
这个定义是循环论证的。

The article lacks definition or definite content.
缺乏确定性或者明确的内容。

As officials of the town, this was definitely their business.
他们既然是这个城镇的官员，这当然是他们的职责所在。