Better safe than sorry 表示现在谨慎一些，胜过以后后悔。即使风险不大，提前做预防时也可以这样说，例如复印护照或早一点去机场。这个表达偏口语，适合 IELTS Speaking，正式作文中通常不用。
什么情境适合说 better safe than sorry？
写一句英语，检查习语是否适合当前情境，以及哪里需要修改。
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Better safe than sorry. (short comment); it's better to be safe than sorry
- I always make a copy of my passport before a trip. Better safe than sorry.
- We booked the airport taxi for five instead of six. It's better to be safe than sorry.
- My sister always checks the cooker twice before leaving the flat. Better safe than sorry, she says.
修改原因
修改前I'll take a warm jacket too. It's better be safe than sorry.
修改后I'll take a warm jacket too. It's better to be safe than sorry.
简短形式 better safe than sorry 没有动词。写成完整的 it's better 结构时，需要 to be。You'd better be 表示“你最好……”，其中的 better be 容易让人把两个结构混起来。修改只加上 to。
在句子中，可以用 just in case 或 to be on the safe side 表达类似意思：I left an hour early, just to be on the safe side。Better safe than sorry 通常单独作为一句补充，先说明做了什么，再用它解释为什么。
动手练习
The mountain trail looked easy, but we still packed a first-aid kit and extra water: ___.
查看答案
better safe than sorry — 山路看起来不难，但仍带上急救包和额外饮水，是为了以防万一，所以选 better safe than sorry。No pain, no gain 强调为获得成果付出努力，而这里主要是在做预防。
描述一次旅行、考试或重要会议前采取预防措施的经历。说明具体做了什么，并以 better safe than sorry 结尾。
Before my job interview, I printed two extra copies of my CV and checked the route the night before. Better safe than sorry.
练习把新词用准确
用正在学的词造句。LetsWords 检查用法和语法，提供修改与母语解释，再通过复习巩固。