你必须戒烟用英语怎么说

"You must quit smoking" 可以用英文表示为 "You must stop smoking"。

来源：这是一个常见的表达方式，用于强调某人必须停止吸烟。

一些英文例句及其中文翻译如下：

"You must quit smoking if you want to improve your health." (如果你想改善你的健康，你必须戒烟。)
"I'm worried about your health, so you must quit smoking." (我为你的健康担心，所以你必须戒烟。)
"It's time for you to quit smoking for good." (是时候让你永久戒烟了。)