learn a lesson (from sth)
多指从错误、失败或经历中获得教训。
She learned a valuable lesson from that mistake.
她从那个错误中学到了宝贵的一课。
功课；作业；练习；教训；启示；经验；经文；（宗教仪式中的）读经；惩戒；训斥；告诫；学习或教学的一个部分
a period of learning or teaching; a unit of instruction
学习或教学的一个部分
A section of learning or teaching into which a wider learning content is divided.
教学单元
a unit of instruction
分配给学生的学习任务；作业
A learning task assigned to a student; homework.
以示警戒的惩罚
punishment intended as a warning to others
学到或要学到的东西
Something learned or to be learned.
故事或事件的意义
the significance of a story or event
作为警告或鼓励的事物
Something that serves as a warning or encouragement.
作为宗教仪式一部分的圣经或其他宗教文本的章节
A section of the Bible or other religious text read as part of a divine service.
严厉的训斥；警告
A severe lecture; reproof; rebuke; warning.
用于教育目的的练习或作文；学习
An exercise; a composition serving an educational purpose; a study.
The math lesson was canceled because the teacher was sick.
数学课因为老师生病而取消了。
用法提示：lesson 为名词，指“一节课”，在句中作主语。
AI contextual example
I need to prepare my lesson for tomorrow's class.
我需要为明天的课备课。
用法提示：lesson 为名词，指“教学内容/一节课”，在句中作 prepare 的宾语。
AI contextual example
She learned to swim after just a few lessons.
她只上了几节课就学会了游泳。
用法提示：lessons 是名词复数，指“几节课”，作介词 after 的宾语。
AI contextual example
多指从错误、失败或经历中获得教训。
She learned a valuable lesson from that mistake.
她从那个错误中学到了宝贵的一课。
常含“教训某人，使其不敢再犯”之意，有时指以惩罚的方式。
That defeat taught him a lesson he never forgot.
那次失败给了他一个他永远忘不了的教训。
表示跟老师学习某项技能，也可说 have lessons in/on sth；lessons 常用复数。
My sister takes piano lessons every Saturday morning.
我姐姐每周六上午上钢琴课。
指某事给人带来的教训、启示或值得学习之处。
Their kindness was a lesson in generosity for us all.
他们的善举给我们所有人上了一堂关于慷慨的课。
grammar · medium
易错句子I have lesson this morning.
正确表达I have a lesson this morning.
lesson 是可数名词，单数形式不能单独使用，前面必须加 a/an 或 the。汉语说“我今天上午有课”时名词前不需要任何冠词，照搬成英语就会漏掉 a。
grammar · medium
易错句子We have four lesson every day.
正确表达We have four lessons every day.
lesson 是可数名词，前面有数词 four 修饰时必须用复数形式 lessons。汉语名词没有单复数变化，所以最容易忘记加 -s。
grammar · medium
易错句子I have a lesson of English every morning.
正确表达I have an English lesson every morning.
汉语“英语课”是“名词＋的＋名词”结构，但英语表示某学科的课时，习惯把学科名词直接放在 lesson 前作定语：an English lesson。用 of 短语说 a lesson of English 不符合英语搭配。
吸取教训
He learned a lesson from his mistake.
他从错误中吸取了教训。
给某人一个教训
She decided to teach him a lesson.
她决定给他一个教训。
上课；学习课程
She takes piano lessons every Saturday.
她每周六上钢琴课。
私人课程；一对一辅导
He is taking private lessons in French.
他正在上法语私人课程。
教案
The teacher wrote a detailed lesson plan.
老师写了一份详细的教案。
Choose the next layer that will help you use lesson with more confidence.
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Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.
宝贵的一课；宝贵的教训
Losing the game was a valuable lesson for the team.
输掉比赛对球队来说是宝贵的一课。