She tried to be more positive about her new job.

她力求对新工作更有信心。

《牛津词典》

I can't be positive about what time it happened.

我说不准这事是什么时间发生的。

《牛津词典》

Though he has met many difficulties, my father is still very positive about life.

尽管遇到许多的困难，父亲依然非常积极乐观地对待生活。

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"What is incredibly positive about the way the demonstration has come together is it is different groups of workers,students, different people that are affected by the crisis that is kind of gripping the system, actually coming together to say that collectively we can fight back and argue to put out priorities first,".

VOA: standard.2009.03.28

You give it when you want people to like you, you want to join in; you want to make people feel positive about you.

当你想让人喜欢你时会有这种微笑，你想加入他们;,你想让人们对你有好印象。

耶鲁公开课 - 心理学导论课程节选

And I am positive about our conversation.

我对我们的谈话持乐观态度。

Let me 实战 - SpeakingMax英语口语达人

He said the European Union had been much more positive about Palestinian unity efforts.

BBC: Palestinian hope and caution over Hamas-Fatah deal

The WHO is positive about the chances of eradication of the disease in Africa.

BBC: Polio case in Burkina Faso

It finds older people in emerging, high-growth economies are much more positive about their retirement.

BBC: Senior moment in the workplace