“Thus” in Chinese 2 – 因而 yīn‘ér

Grammar Point:
因而 yīn’ér is a conjunctive adverb that means “thus,” “therefore,” or “as a result.” It indicates a causal relationship between two clauses, where the second clause is the logical consequence of the first.

Structure

Clause A + 因而 yīn’ér + Result of A

因而 yīn’ér is a formal, written-language equivalent of “thus” or “as a result,” used to indicate a clear causal relationship between two statements. It is less commonly used in daily conversation compared to 所以 suǒyǐ but appears frequently in formal writing.

這裡zhèlǐ的de氣候qìhòu溫暖wēnnuǎn， 因而yīn‘ér水果shuǐguǒ生長shēngzhǎng得de很hěn好hǎo这里zhèlǐ的de气候qìhòu温暖wēnnuǎn， 因而yīn‘ér水果shuǐguǒ生长shēngzhǎng得de很hěn好hǎo
The climate here is warm, thus fruits grow well.

天氣tiānqì惡劣èliè， 航班hángbān因而yīn‘ér被bèi取消qǔxiāo了le天气tiānqì恶劣èliè， 航班hángbān因而yīn‘ér被bèi取消qǔxiāo了le
The weather was bad, therefore the flight was canceled.

這zhè座zuò城市chéngshì經濟jīngjì發展fāzhǎn迅速xùnsù， 因而yīn‘ér吸引xīyǐn了le許多xǔduō外國wàiguó投資者tóuzīzhě这zhè座zuò城市chéngshì经济jīngjì发展fāzhǎn迅速xùnsù， 因而yīn‘ér吸引xīyǐn了le许多xǔduō外国wàiguó投资者tóuzīzhě
This city’s economy is developing rapidly, thus attracting many foreign investors.

他tā對duì藝術yìshù非常fēicháng感興趣gǎnxīngqù， 因而yīn‘ér選擇xuǎnzé了le美術měishù系xì他tā对duì艺术yìzhú非常fēicháng感兴趣gǎnxīngqù， 因而yīn‘ér选择xuǎnzé了le美术měizhú系xì
He is very interested in art, therefore he chose to major in fine arts.

他tā對duì健康jiànkāng飲食yǐnshí有yǒu深入shēnrù研究yánjiù， 因而yīn‘ér能néng提供tígōng專業zhuānyè的de建議jiànyì他tā对duì健康jiànkāng饮食yǐnshí有yǒu深入shēnrù研究yánjiū， 因而yīn‘ér能néng提供tígōng专业zhuānyè的de建议jiànyì
He has in-depth knowledge of healthy eating, therefore he can provide professional advice.

這zhè本běn書shū內容nèiróng深入淺出shēnrùqiǎnchū， 因而yīn‘ér受到shòudào了le讀者dúzhě的de喜愛xǐài这zhè本běn书shū内容nèiróng深入浅出shēnrùqiǎnchū， 因而yīn‘ér受到shòudào了le读者dúzhě的de喜爱xǐài
This book explains things in a simple yet profound way, thus it is well received by readers.

他tā經常jīngcháng參加cānjiā志工zhìgōng活動huódòng， 因而yīn‘ér結識jiéshì了le許多xǔduō志同道合zhìtóngdàohé的de朋友péngyǒu他tā经常jīngcháng参加cānjiā志工zhìgōng活动huódòng， 因而yīn‘ér结识jiéshi了le许多xǔduō志同道合zhìtóngdàohé的de朋友péngyou
He often participates in volunteer activities, thus he has made many like-minded friends.

Differences

Word	Spoken/Written	Tone	Main Function
因而 yīn’ér (HSK 5)	Written	Formal	Emphasizes cause-and-effect
從从而 cóng’ér (HSK 5)	Written	Very formal	Emphasizes means and result
所以 suǒyǐ (HSK 2)	Spoken + Written	Neutral	Most common causal relationship
於于是 yúshì (HSK 4)	Spoken + Written	Natural	Emphasizes sequence of events
因此 yīncǐ (HSK 3)	Written	Very formal	Strongly emphasizes cause-and-effect