put on 是英语中常用的多义动词短语，英式音标为 /pʊt ɒn/，美式音标为 /pʊt ɑːn/，核心含义包括“穿戴”“上演”“增加”“假装”等，具体语义需结合语境判断。作为及物动词短语，它通常需要接宾语，如衣物、表演、设备等，且不同含义对应不同搭配模式。
穿戴/涂抹
表示将衣物、饰品或化妆品施加于身体，是最基础的用法。
接衣物类名词：She put on her coat and went out.（她穿上外套出去了）
接饰品或化妆品：He put on his glasses and started reading.（他戴上眼镜开始阅读）；She put on some lipstick before the party.（她在派对前涂了口红）
上演/举办
指组织演出、展览或活动，宾语多为“表演”“节目”等。
The band is hoping to put on a show before the end of the year.（乐队希望年底前举办一场演出）
The school put on a charity event to raise funds.（学校举办了慈善活动筹集资金）
增加（体重/数量）
特指体重增长，或抽象意义上的数量增加。
I can eat what I want but never put on weight.（我想吃什么就吃什么，但从不增重）
打开/启动（设备）
表示操作设备使其运行，如电器、工具等。
I put the radio on to listen to news.（我打开收音机听新闻）
假装/装腔作势
指故意表现出某种态度或情感，带有伪装意味。
He put on an American accent to amuse the kids.（他模仿美国口音逗孩子们）；She puts on a happy face even when sad.（即使难过，她也装作开心的样子）
| 短语 | 含义 | 例句 |
|---|---|---|
| put on weight | 增加体重 | She put on 5kg during the vacation. |
| put on airs | 摆架子、装腔作势 | He always puts on airs in front of others. |
| put on a show | 上演表演 | The theater will put on a new play next month. |
| put on a brave face | 强装镇定 | She put on a brave face after failing the exam. |
| put on reserve | （图书馆书籍）仅限馆内阅读 | This book is put on reserve for students. |
She put on her hat and gloves before going out in the snow.（下雪天出门前，她戴上了帽子和手套）
The theater group will put on Hamlet next week.（剧团下周将上演《哈姆雷特》）
If you eat too much sugar, you'll put on weight quickly.（吃太多糖会让你快速增重）
He put on the brakes suddenly to avoid hitting t