Giving Reasons in Mandarin Chinese with 因为 (yīnwèi) and 既然 (jìrán)
Learn to give reasons for your opinions in Mandarin using 因为 (yīnwèi, because) and 既然 (jìrán, since), with the 所以 (suǒyǐ, so) pattern, so you can support what you think in simple, natural Chinese.
By LiamCulture & nuance · Yapr Learn
When you give an opinion in Mandarin, people often ask why. This lesson teaches you two common ways to give a reason: 因为 (yīnwèi), which means 'because', and 既然 (jìrán), which means 'since'. You will also learn how 因为 pairs with 所以 (suǒyǐ, so) to connect a reason and a result. Chinese does not change verb endings or add articles here, so the main work is word order and choosing the right connector. Keep your reasons short and clear, and you can already sound more convincing.
By the end, you can…
- give a simple reason for my opinion using 因为 (yīnwèi).
- connect a reason and a result with 因为...所以... (yīnwèi... suǒyǐ...).
- use 既然 (jìrán) to say 'since' when a fact is already known.
Listen once. Try it slowly. Then say it without looking.
Checking available voices…
因为 (yīnwèi)
because
yīn-wèi
Use before a reason. It can start a sentence or come after the subject: 我因为下雨不去 (wǒ yīnwèi xiàyǔ bú qù).
所以 (suǒyǐ)
so, therefore
suǒ-yǐ
Introduces the result. Often paired with 因为: 因为很贵，所以我不买 (yīnwèi hěn guì, suǒyǐ wǒ bù mǎi).
因为...所以... (yīnwèi... suǒyǐ...)
because... so...
yīn-wèi ... suǒ-yǐ
A common two-part pattern. In casual speech, one half may be dropped, but using both is clear and correct.
既然 (jìrán)
since, now that
jì-rán
Use when the reason is already known or agreed by both people: 既然你不去，我也不去 (jìrán nǐ bú qù, wǒ yě bú qù).
我觉得... (wǒ juéde...)
I think / I feel...
wǒ jué-de
A polite way to introduce an opinion before giving a reason: 我觉得很好，因为很方便 (wǒ juéde hěn hǎo, yīnwèi hěn fāngbiàn).
Pronunciation guides are approximate. Slow playback keeps the original pitch.
Make it make sense
Useful pattern
The basic reason pattern is 因为 (yīnwèi) + reason, 所以 (suǒyǐ) + result. For example: 因为今天很冷，所以我穿大衣 (yīnwèi jīntiān hěn lěng, suǒyǐ wǒ chuān dàyī) — 'Because it is cold today, so I wear a coat.' You can also put 因为 after the subject: 我因为很累，所以早睡 (wǒ yīnwèi hěn lèi, suǒyǐ zǎo shuì). With 既然 (jìrán), the reason is already known: 既然下雨，我们带伞吧 (jìrán xiàyǔ, wǒmen dài sǎn ba) — 'Since it is raining, let's take umbrellas.'
When to use it
Use 因为 (yīnwèi) when you are explaining a new reason: 我不去，因为太贵了 (wǒ bú qù, yīnwèi tài guì le). Use 既然 (jìrán) when both people already know the fact and you are drawing a conclusion: 既然你不喜欢，我们换一个 (jìrán nǐ bù xǐhuān, wǒmen huàn yí ge) — 'Since you don't like it, let's change to another one.' In short answers, 因为 alone is enough: 为什么？因为很忙 (wèishénme? yīnwèi hěn máng).
Listen to each line, then take one part and reply out loud.
你觉得这个电影怎么样？
What do you think of this movie?nǐ juéde zhège diànyǐng zěnmeyàng?我觉得很好看，因为故事很有趣。
I think it is very good, because the story is interesting.wǒ juéde hěn hǎokàn, yīnwèi gùshi hěn yǒuqù.既然你喜欢，我们下周再看一个吧。
Since you like it, let's watch another one next week.jìrán nǐ xǐhuān, wǒmen xià zhōu zài kàn yí ge ba.好啊，因为下周五我有空。
Sure, because I am free next Friday.hǎo a, yīnwèi xià zhōu wǔ wǒ yǒu kòng.A little context goes a long way
In everyday Mandarin, 因为 (yīnwèi) and 所以 (suǒyǐ) are often both used, but in fast conversation one part may be left out. 既然 (jìrán) can sound slightly more formal or logical, so it fits discussions and planning. With friends, a simple 因为 answer is natural and polite. Avoid using 既然 for a brand-new reason that the other person does not know yet.
One thing to watch for
Using 因为 (yīnwèi) when the reason is already known to both speakers, as in 因为下雨，我们带伞吧 (yīnwèi xiàyǔ, wǒmen dài sǎn ba).
Try this instead: When the fact is already shared, use 既然 (jìrán): 既然下雨，我们带伞吧 (jìrán xiàyǔ, wǒmen dài sǎn ba) — 'Since it is raining, let's take umbrellas.' Keep 因为 for a new reason: 我带伞，因为下雨了 (wǒ dài sǎn, yīnwèi xiàyǔ le).
Your turn
Try answering out loud before checking a possible answer.
1Translate: 'I don't go because it is too expensive.'
Show a sample answer
我不去，因为太贵了。
因为 (yīnwèi) introduces the reason after the main clause. 太...了 (tài... le) means 'too...'. You could also say 因为太贵了，所以我不去.
2Which word fits better: 既然 or 因为? '___ you are tired, go to bed early.'
Show a sample answer
既然
既然 (jìrán) fits because being tired is already known or accepted. 因为 would introduce a new reason, which is less natural here.
3Make a sentence with 因为...所以... about studying Chinese.
Show a sample answer
因为我想去中国，所以我学中文。
This uses the full pattern: reason first, then result. 我想去中国 (I want to go to China) is the reason, and 我学中文 (I study Chinese) is the result.
Use 因为 (yīnwèi) for a new reason and 既然 (jìrán) for a reason both people already know. Pair 因为 with 所以 (suǒyǐ) when you want to show reason and result clearly.
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