He sure looked unhappy.

他的确显得不高兴。

《牛津词典》

Now that his teacher is giving him extra help and he is working hard himself, he sure to do well in the next exam.

既然他的老师给了他额外的帮助，他自己也在刻苦学习，他一定会在下次考试中取得好成绩。

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"And he sure didn't help us," Grant said bitterly.

“他确实没有帮助过我们，”格兰特仍很气愤地说。

《柯林斯英汉双解大词典》

He must be the stupidestson of a bitch alive, but he sure is fast.

VOA: standard.other

He's more likely to be someone who plays by the rules, avoids dangers, and bets on the sure thing.

他们只会循规守据,只做自己有把握的事情，绝不做任何有风险的事。

耶鲁公开课 - 政治哲学导论课程节选

His friend told me that he doesn't have a girlfriend, but I'm not sure.

他的朋友跟我说他没有女朋友。可我还是不清楚。

I want to 实战 - SpeakingMax英语口语达人

But he sure can't give you an answer about what will make it right.

WHITEHOUSE: Remarks by the President and Vice President in Dayton, OH

The funny man is used to generating laughter, and he sure is no stranger to showing off his man muscles.

FORBES: 'Expendables' stars at NYSE, bulging muscles everywhere

President Mubarak said he never sough the office, maybe so, but he sure has held onto it for all it is worth.

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