High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
课；一节课；课时
lessons — plural of lesson
先理解核心含义，再看它在真实句子里的用法。
课；一节课；课时
a period of learning or teaching; a unit of instruction
The math lesson was canceled because the teacher was sick.
数学课因为老师生病而取消了。
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
I need to prepare my lesson for tomorrow's class.
我需要为明天的课备课。
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。
AI contextual example
he took driving lessons
他上了驾驶课。
WordNet
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
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该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Collins 词频等级为 3，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.