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Marking a clause boundary with the comma (，)
Structure
Clause + ， + Clause
Explanation
In Chinese, the full-width comma (，) is used to mark boundaries between clauses within a sentence, helping to organize complex ideas into manageable parts. It often separates a time or place phrase from the main clause, or connects two related but distinct statements. The Chinese comma is a distinct character from the English comma and is standard in Chinese punctuation.
Examples
下课以后，我们一起去图书馆吧。
Xiàkè yǐhòu, wǒmen yīqǐ qù túshūguǎn ba.
After class, let's go to the library together.
因为下雨了，他决定不出门了。
Yīnwèi xiàyǔ le, tā juédìng bù chūmén le.
Because it started raining, he decided not to go out.
到了北京，你一定要去长城看看。
Dào le Běijīng, nǐ yīdìng yào qù Chángchéng kànkan.
When you get to Beijing, you must go visit the Great Wall.
下课以后，我们一起去图书馆吧。
Xià kè yǐhòu, wǒmen yīqǐ qù túshūguǎn ba.
After class, let's go to the library together.
因为下雨了，他决定不出门了。
Yīnwèi xià yǔ le, tā juédìng bù chūmén le.
Because it started raining, he decided not to go out.
到了北京，你一定要去长城看看。
Dào le Běijīng, nǐ yīdìng yào qù Chángchéng kànkan.
When you get to Beijing, you must visit the Great Wall.