Usage note
因此表示因为前面的原因，所以后面会发生。
yīn cǐ biǎo shì yīn wèi qián miàn de yuán yīn， suǒ yǐ hòu miàn huì fā shēng。
因此 means therefore, as a result of the reason before it.
Context note
因此常用于书面表达和解释。
yīn cǐ cháng yòng yú shū miàn biǎo dá hé jiě shì。
因此 is often used in writing and explanations.
5 examples
他很努力，因此进步很快。
tā hěn nǔ lì， yīn cǐ jìn bù hěn kuài。
He is very hardworking; therefore, he improved quickly.
天气不好，因此我们没去。
tiān qì bù hǎo， yīn cǐ wǒ men méi qù。
The weather was bad; therefore, we did not go.
我生病了，因此请假。
wǒ shēng bìng le， yīn cǐ qǐng jià。
I was sick; therefore, I took leave.
路很远，因此要早点出发。
lù hěn yuǎn， yīn cǐ yào zǎo diǎn chū fā。
The road is far; therefore, we need to leave early.
大家同意，因此决定通过。
dà jiā tóng yì， yīn cǐ jué dìng tōng guò。
Everyone agreed, therefore the decision passed.
5 mini stories
他每天练习，因此进步明显。
tā měi tiān liàn xí， yīn cǐ jìn bù míng xiǎn。
He practiced every day, therefore his progress was obvious.
天气很冷，因此大家都穿得很多。
tiān qì hěn lěng， yīn cǐ dà jiā dōu chuān dé hěn duō。
The weather was cold, therefore everyone wore a lot of clothes.
老师讲得很清楚，因此我们都懂了。
lǎo shī jiǎng dé hěn qīng chǔ， yīn cǐ wǒ men dōu dǒng le。
The teacher explained clearly, therefore we all understood.
我起得太晚，因此迟到了。
wǒ qǐ dé tài wǎn， yīn cǐ chí dào le。
I got up too late, therefore I was late.
他很认真，因此得到了表扬。
tā hěn rèn zhēn， yīn cǐ dé dào le biǎo yáng。
He was serious, therefore he was praised.
Mini dialogue
下雨了
A
外面下大雨了。
Wàimiàn xià dà yǔ le.
It's raining heavily outside.
B
因此，我们今天的体育课改在室内上了。
Yīncǐ, wǒmen jīntiān de tǐyù kè gǎi zài shìnèi shàng le.
Therefore, our PE class today is changed to indoors.
帮助同学
A
小明生病没来上学。
Xiǎo Míng shēngbìng méi lái shàngxué.
Xiao Ming is sick and didn't come to school.
B
因此，我帮他记了今天的作业。
Yīncǐ, wǒ bāng tā jì le jīntiān de zuòyè.
Therefore, I helped him write down today's homework.
Related words and contrasts
similar
所以
suǒyǐ
so; therefore
所以 is more common in everyday speech.
opposite
因为
yīnwèi
because
因为 gives the reason; 因此 gives the result.