reason ⇒ 这次没考好，主要原因是没重视。 Zhè cì méi kǎohǎo, zhǔyào yuányīn shì méi zhòngshì. → The main reason I didn't do well in this exam is that I didn't take it very seriously. ⇒ 医生们尚未查出得这种病的原因。 Yīshēngmen shàng wèi cháchū dé zhè zhǒng bìng de yuányīn. → The doctors have never established the causes of this illness.

because ⇒ 因为有暴风雨，所以他们取消了航海计划。 Yīnwèi yǒu bàofēngyǔ, suǒyǐ tāmen qǔxiāole hánghǎi jìhuà. → They cancelled their plans to go sailing because of the stormy weather. ⇒ 她昨天请了一天的假，是因为孩子生病了。 Tā zuótiān qǐngle yī tiān de jià, shì yīnwèi háizi shēngbìng le. → Yesterday she requested a day off because her child was sick.

follow

( 原因和结果 ) cause and effect

so ⇒ 他迷恋于玩游戏，因此无心学习，成绩下降。 Tā míliàn yú wán yóuxì, yīncǐ wú xīn xuéxí, chéngjì xiàjiàng. → He is obsessed with playing games, so he's not interested in studying and his achievements have dropped off. ⇒ 这种病很容易复发，因此要格外注意。 Zhè zhǒng bìng hěn róngyì fùfā, yīncǐ yào géwài zhùyì. → It's very easy to have a relapse with this kind of illness, so you have to be exceptionally careful. ⇒ 由于引进了先进技术，生产效率因此大大提高。 Yóuyú yǐnjìnle xiānjìn jìshù, shēngchǎn xiàolǜ yīncǐ dàdà tígāo. → The production rate has increased hugely due to imported advanced technology.

( 成分 ) element

( 宗 ) karma

therefore ⇒ 由于工人们增强了安全意识，因而事故发生率大大减少了。 Yóuyú gōngrénmen zēngqiángle ānquán yìshí, yīn'ér shìgù fāshēnglǜ dàdà jiǎnshǎo le. → Workers have become more safety conscious, and therefore the accident rate has fallen greatly.

follow traditional ways

gene ⇒ 基因工程 jīyīn gōngchéng → genetic engineering

external cause

cause

cause

the Internet

heroin

⇒ 国家队换教练事出有因。 Guójiāduì huàn jiàoliàn shì chū yǒu yīn. → There was a good reason for the national team to change their coach.

give advice appropriate to the situation

give up eating for fear of choking

act according to local conditions

teach according to one's student's ability ⇒ 教师在教学时应尽量因材施教。 Jiàoshī zài jiàoxué shí yīng jǐnliàng yīn cái shī jiào. → Teachers, when teaching, ought as far as possible to teach students according to their abilities.

make do with what's available ⇒ 老师们因陋就简，给孩子们建了一个小活动室。 Lǎoshīmen yīn lòu jiù jiǎn, gěi háizimen jiànle yī gè xiǎo huódòngshì. → The teachers made do with what was available and built a small activity room for the children.