HSK 7–9 · adverb · conjunction
故
therefore; so (literary); also: old; deceased
他病了，故今天不来上课。
Tā bìngle， gù jīntiān bù lái shàngkè。
He is sick, so he won't come to class today.
奶奶给我讲了一个故事。
Nǎinai gěi wǒ jiǎngle yì ge gùshi.
Grandma told me a story.
老师给我们讲了一个故事。
Lǎoshī gěi wǒmen jiǎngle yì ge gùshi.
The teacher told us a story.
这个故事很感人。
Zhège gùshi hěn gǎnrén.
This story is very touching.