Friday，2026.05.15

New words：

cautious [ˈkɔʃəs] adj. 小心的；谨慎的；慎重的

详细词源拆解：

词根 caut- 小心、警惕 + 形容词后缀 -ious；
本源本义：时刻留意、提防风险，引申为小心谨慎的、慎重的、不鲁莽的。
同根关联：caution n. 小心；警告 → cautious 谨慎的。

词汇家族

caution（n. 谨慎；警告）
→ cautious（adj. 谨慎的）
→ cautiously（adv. 谨慎地）

必记高频搭配

be cautious about 对…… 谨慎

We must be cautious about strange people around us.

be cautious with 慎重对待

Be cautious with your words in public social places.

cautious attitude 谨慎的态度

Keep a cautious attitude toward new online information.

cautious decision 慎重的决定

Make a cautious decision before you take any action.

cautiously (adv. 谨慎地)

He cautiously checks every detail of his school exam paper.

关键使用提醒

1. be cautious about / be cautious of 对…… 谨慎 / 提防
2. 写作高级替换：用 cautious 替换普通 careful，提升文采。
3. 词形记忆：caution 名词 → cautious 形容词，后缀 -ious 表充满某种特质。