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1·Are you sure you should be up?

你肯定你该起床了吗?《柯林斯英汉双解大词典》

2·'Are you sure?' he asked her.

“你有把握吗？”他问她。《牛津词典》

3·Are you sure about that?

这事你肯定吗？《牛津词典》

4·Are you sure he's not two-timing you?

你肯定他没有背着你另有所爱？《牛津词典》

5·Are you sure this is the quickest way?

你确信这是最快捷的方法吗？《牛津词典》

6·Are you sure this deal is on the level?

你确信这笔交易合法吗？《牛津词典》

7·Are you sure you locked the front door?

你确定锁前门了吗？《柯林斯英汉双解大词典》

8·Are you sure? Memory can play tricks on you.

你肯定吗？记忆也会捉弄人的。《牛津词典》

9·Are you sure these documents belong together?

你肯定这些文件应放在一起吗？《牛津词典》

10·Are you sure you've got that on the right way round ?

你能肯定你没有穿反吗？《牛津词典》