Usage note
所以用来连接两个句子，表示结果或结论。
suǒ yǐ lái zuò lián jié liǎng gè jù zi, bǎo shí jié guǒ huò jié lùn.
So is used to connect two sentences to indicate a result or conclusion.
Context note
所以常用于日常生活对话中，比如解释原因或得出结论。
suǒ yǐ cháng yòng yú rì kāi shēn qíng huà huà zhōng, bǐ 如此常常用于日常生活中，比如解释原因或得出结论。
So is commonly used in daily conversations, such as explaining reasons or drawing conclusions.
5 examples
天气很好，所以我们去公园了。
tiān qì hěn hǎo， suǒ yǐ wǒ men qù gōng yuán le。
The weather was very good, so we went to the park.
他没吃早餐，所以他感觉很饿。
tā méi chī zǎo cān， suǒ yǐ tā gǎn jué hěn è。
He didn't have breakfast, so he felt very hungry.
你迟到了，所以老师让你罚站。
nǐ chí dào le， suǒ yǐ lǎo shī ràng nǐ fá zhàn。
You were late, so the teacher made you stand as punishment.
他学习很努力，所以他考试得了高分。
tā xué xí hěn nǔ lì， suǒ yǐ tā kǎo shì dé le gāo fēn。
He studied very hard, so he got high scores in the exam.
我们没带伞，所以淋湿了。
wǒ men méi dài sǎn， suǒ yǐ lín shī le。
We didn't bring an umbrella, so we got wet.
5 mini stories
妈妈说今天天气好，所以我们去公园玩。爸爸说太晚了，所以我们回家了。
mā ma shuō jīn tiān tiān qì hǎo， suǒ yǐ wǒ men qù gōng yuán wán。 bà ba shuō tài wǎn le， suǒ yǐ wǒ men huí jiā le。
Mom said the weather was good today, so we went to the park to play. Dad said it was too late, so we went home.
小明没做作业，所以他被罚抄写。妈妈说这样可以让他记住。所以小明开始认真完成作业。
xiǎo míng méi zuò zuò yè， suǒ yǐ tā bèi fá chāo xiě。 mā mā shuō zhè yàng kě yǐ ràng tā jì zhù。 suǒ yǐ xiǎo míng kāi shǐ rèn zhēn wán chéng zuò yè。
Xiaoming didn't do his homework, so he was punished to copy it. Mom said this would make him remember. So Xiaoming started doing his homework carefully.
我们去超市买菜，所以顺便买了些零食。回家后，所以我们一起吃了晚饭。
wǒ men qù chāo shì mǎi cài， suǒ yǐ shùn biàn mǎi le xiē líng shí。 huí jiā hòu， suǒ yǐ wǒ men yì qǐ chī le wǎn fàn。
We went to the supermarket to buy vegetables, so we also bought some snacks. After coming home, so we had dinner together.
小红没吃早饭，所以她上课时感觉很饿。老师说这样会影响学习，所以小红以后每天早上都会吃早餐。
xiǎo hóng méi chī zǎo fàn， suǒ yǐ tā shàng kè shí gǎn jué hěn è。 lǎo shī shuō zhè yàng huì yǐng xiǎng xué xí， suǒ yǐ xiǎo hóng yǐ hòu měi tiān zǎo shàng dōu huì chī zǎo cān。
Xiaohong didn't have breakfast, so she felt very hungry in class. The teacher said this would affect her studies, so Xiaohong started having breakfast every morning.
我们计划去旅行，所以提前订了酒店。结果天气不好，所以我们取消了旅行。
wǒ men jì huà qù lǚ xíng， suǒ yǐ tí qián dìng le jiǔ diàn。 jié guǒ tiān qì bù hǎo， suǒ yǐ wǒ men qǔ xiāo le lǚ xíng。
We planned a trip, so we booked the hotel in advance. However, the weather was bad, so we canceled the trip.
Mini dialogue
肚子饿了
A
我中午没吃饱，所以现在肚子很饿。
Wǒ zhōngwǔ méi chī bǎo, suǒyǐ xiànzài dùzi hěn è.
I didn't eat enough at lunch, so I am very hungry now.
B
所以我们一起去吃点心吧。
Suǒyǐ wǒmen yīqǐ qù chī diǎnxīn ba.
So let's go have a snack together.
认真学习
A
明天有考试，所以我今天要好好复习。
Míngtiān yǒu kǎoshì, suǒyǐ wǒ jīntiān yào hǎohǎo fùxí.
There is a test tomorrow, so I need to review well today.
B
所以我不打扰你了，加油！
Suǒyǐ wǒ bù dǎrǎo nǐ le, jiāyóu!
So I won't disturb you, good luck!
Related words and contrasts
opposite
因为
yīn wèi
because
因为 gives the reason, 所以 gives the result.
similar
因此
yīn cǐ
therefore; thus
A more formal way to say 所以, often in writing.