好的，我将按照百科式条目为你整理“be positive”的完整信息，包括音标、翻译、读音、用法、例句和短语搭配。

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be positive

一、词组释义

be positive 是英语中的固定短语，主要有以下几种含义：

保持积极的态度；乐观。

确定；有把握（表示对某件事情确信无疑）。

在医学或科学中，表示“呈阳性”或“检测出某种指标”。

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二、音标

be positive
英式发音：/bi ˈpɒz.ɪ.tɪv/
美式发音：/bi ˈpɑː.zə.tɪv/

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三、读音提示

be：发音类似汉语“比”，轻声。

positive：分为三音节，重音在第一音节“pos”，发音类似“波-zi-tiv”。

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四、用法说明

表示态度或心态

常用于劝说或建议别人保持乐观、积极的态度。

句型：be positive + about + 名词/动名词

 

表示确定或有把握

用于强调自己对事实、答案或结果有信心。

句型：be positive + that + 从句

 

表示检测结果为阳性

常见于医学检测或科学实验中。

句型：be positive + for + 检测项目

 

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五、例句（共10句）

No matter what happens, you should always be positive about the future.

She tried to be positive despite the setbacks in her career.

Are you positive that he will attend the meeting tomorrow?

I want to be positive that I locked the door before leaving.

The test came back positive for influenza.

It is important to be positive in difficult situations.

He remained positive even when the results were not what he expected.

Be positive that you have all the necessary documents before submitting the application.

The patient's blood sample was positive for the virus.

Teachers encourage students to be positive and confident in their abilities.

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六、短语搭配

be positive about sth 保持对某事乐观或积极

be positive that … 确定、确信某事

be positive for sth 检测出某物，呈阳性

think positive 持积极心态

maintain a positive attitude 保持积极态度

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如果你愿意，我可以帮你整理一份**“be positive” 的中文详细例句对照表**，让你学习和记忆更轻松。你希望我整理吗？