Are you sure?你确定吗？

I'm not sure.我没把握。

How could he be so sure?他怎么能如此确信呢？

Are you sure you're all right?你确信身体没问题吗？

It is impossible to be sure about the value of land.土地的价值是无法确知的。

Something had gone wrong, he was sure of it.出问题了, 这他能肯定。

She was no longer sure how she felt about him.她不再确定她对他的感觉如何。

I'm not sure why he said that.我拿不准他为什么那样说。

I'm not sure when they first met.我不确定他们是什么时候初次见面的。

They're sure of success.他们确信能够成功。

I'm sure to forget.我一定会忘记。

Public disgrace and infamy would be sure to follow.当众受辱和声名狼藉肯定会接踵而至。

His aching shoulder was a sure sign of rain.他肩膀疼痛, 这预示着肯定要下雨。

She has a sure grasp of social issues.她对社会问题的把握很准确。

These shoes provide surer footing and greater confidence.这双鞋穿着更稳当, 让人看起来更自信。

Parents make the rules. To be sure, many of the rules are no longer appropriate today.家长会制定规矩。当然, 有很多规矩今天看来已经不合适。

Victor was so confident, so sure of himself.维克多对自己信心满满。

Be sure and shut the door.记住一定要关门。

I told him to be sure to shut the door.我告诉他一定要关门。

Be sure you get your daily quota of calcium.要确保每天的钙摄入量。

We don't know what happened for sure.我们说不准发生了什么事情。

One thing's for sure, his vocal style hasn't changed much.有一点是肯定的, 他的歌唱风格没有什么大改变。

I don't know for sure.我不太肯定。

Make sure that you follow the instructions carefully.确保认真按照说明书操作。

I'm going to make sure the door's locked.我要去看看门是否已经锁上。

We watched the baby to make sure that she was asleep.我们看了看婴儿, 看她是否已经睡着。

And, sure enough, the sun was starting to come up.果然, 太阳开始升起来了。

Can I go with you? – Sure.我能和你一起走吗？——当然。

That sure is pretty.那确实很漂亮。

It sure looks that way.看上去的确是那样。