Learn 是英语中表示“学习”或“获知”的核心动词，音标为英 /lɜːn/、美 /lɜːrn/，其用法覆盖知识获取、技能掌握、信息得知等多重场景。作为不规则动词，它的过去式和过去分词有两种形式：learned（美式常用）和learnt（英式常用），现在分词为learning，第三人称单数为learns。
学习知识或技能（强调结果）
表示通过学习、实践或教导获得知识、技能或能力。直接接名词时，需注意避免语义重复——“learn knowledge”是典型错误，因为learn本身已包含“获得知识”的含义，正确表达应为“learn about sth”或“acquire knowledge”。
▶ 例句：She learned to play the piano at 5 years old.（她5岁学会弹钢琴）
▶ 例句：I want to learn about traditional Chinese medicine.（我想学习中医知识）
得知或获悉信息（被动获取）
指通过他人告知、阅读或观察等方式了解到某件事，常与介词of或about搭配。
▶ 例句：We learned the news from her family.（我们从她家人那里得知了这个消息）
▶ 例句：He was shocked to learn of the accident.（得知事故发生，他感到震惊）
从经验中吸取教训
表示通过经历（尤其是负面经历）获得认知或改进行为，常用搭配learn from。
▶ 例句：She learned from her mistakes and improved quickly.（她从错误中吸取教训，进步很快）
▶ 例句：Fools learn by their own mistakes; wise men by others'.（愚者自误，智者互鉴）
| 短语 | 含义 | 例句 |
|---|---|---|
| learn from sb/sth | 向某人/从某事学习 | We should learn from successful cases. |
| learn about sth | 了解某事物的知识 | Kids love learning about dinosaurs. |
| learn by heart | 熟记，背诵 | Learn this poem by heart for tomorrow. |
| learn by doing | 通过实践学习 | The best way to cook is to learn by doing. |
| learn of sth | 听说/获悉某事 | I learned of his promotion yesterday. |
| learn to do sth | 学会做某事 | He finally learned to accept criticism. |
Learn vs. Study
Learn强调“学会”的结果（如学会骑车），而study强调“学习的过程”（如研究课题）。
▶ 正确：I learned to swim last summer.（结果）
▶ 正确：I studied math for 3 hours last night.（过程）
Learn的时态与语态
不可用于进行时表示“正在学习”（如错误：I am learning English now），需用一般现在时或现在完成时替代。被动语态中常用“be taught”，如“The children were taught to read.”
Write out this word ten times to learn its spelling.（把这个单词抄十遍以记住拼写）
It's more useful to learn modern languages than Latin.（学现代语言比拉丁语更有用）
She learned of his arrival from a friend.（她从朋友处得知他已抵达）
You need to learn the speech by heart for