cautious about的音標是[k?????s ?b?te?t]，基本翻譯是“對…小心謹慎的”，速記技巧是：caution小心，ous形容詞后綴，about介詞。

cautious 的英文詞源為：

- 詞源：來自古英語 k?tsian，意為小心，謹慎。

變化形式：

- 比較級：more cautious，most cautious。

- 最高級：most cautious，most most cautious。

相關單詞：

- cautiously：小心地，謹慎地，遲緩地。

- caution：警告，告誡，謹慎。

- cauterize：燒灼，止血，警告。

- covetousness：貪心，嫉妒，貪婪。

- cauterization：燒灼法，止血法。

- cauterizing：燒灼，止血。

- cauterization of the liver：肝膿腫。

- cautery：燒灼術，止血法。

- cauterizing needle：電烙針。

- cautiousness：謹慎，小心。

以上這些單詞都與cautious有著密切的聯系，它們在詞義和用法上都有所延伸和發展。cautious這個詞作為形容詞，表示小心、謹慎的，在英語中應用廣泛，它提醒我們要深思熟慮、三思而后行，避免因輕率而犯錯。

常用短語：

1. be cautious about doing sth. 小心做某事

2. be cautious of sth. 對某事小心

3. exercise caution 小心謹慎

4. be careful with 對...小心

5. be careful 當心

6. proceed with caution 慎重行事

7. be circumspect in one"s actions 行為謹慎

雙語例句：

1. Be cautious when crossing the street. 在過馬路時要小心。

2. I am cautious about investing in stocks because I don"t want to lose my money. 我對投資股票很小心，因為我不想賠錢。

3. Exercise caution when choosing a new product to avoid getting scammed. 在選擇新產品時要小心，以免被騙。

4. Be careful when using the lawn mower, don"t run too fast. 使用割草機時要小心，不要跑得太快。

5. Be cautious when communicating with strangers online, especially when sharing personal information. 在網上與陌生人交流時要小心，尤其是分享個人信息的時候。

6. He always proceeds with caution when making decisions, never taking risks without careful consideration. 他在做決定時總是小心翼翼，不會輕易冒險，不會不經過仔細考慮。

7. Be circumspect in your actions and always remember to be cautious in everything you do. 你的行為要謹慎，無論做什么都要小心。

英文小作文：

Be Careful When Making Decisions

In life, we face many choices and decisions every day, whether it"s choosing what to eat for dinner, whether to take the bus or walk, or whether to trust someone or not. Each decision we make can have a significant impact on our lives, so it"s important to be cautious and thoughtful when making them.

When making decisions, it"s essential to consider all the possible outcomes and risks involved, and weigh them against the potential rewards. We should avoid being impulsive and take our time to think through the decision thoroughly before making it. We should also be aware of our biases and preconceived ideas, and try to remain objective and open-minded when making decisions.

Finally, we should always remember to be cautious in everything we do, whether it"s making a small purchase online or taking a big decision in life. Being careful and thoughtful will help us avoid making mistakes and regrets in our lives.