老師在講課，大家要專心。
The teacher is lecturing, and everyone needs to focus.
Listen to pronunciation
Example sentences
這本書一共有二十課。
这本书一共有二十课。
This book has twenty lessons in total.
他今天下午有三堂數學課。
He has three math classes this afternoon.
歷史課介紹巴黎公社的理想與失敗。
The history class introduced the ideals and failure of the Paris Commune.
歷史課上，老師介紹了魏的興衰。
In history class, the teacher introduced the rise and fall of Wei.
Usage Notes
A noun referring to a lesson or subject, or a measure word for lessons.
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