Multi-Clause Compound Sentences
A multi-clause compound sentence (二重复句) is a compound sentence in which one clause is itself a compound sentence, so two pairs of connectives are nested. 虽然他基础不好，但是因为他每天都练习… has an outer 虽然…但是 and an inner 因为.
In English
A two-layer compound sentence is a compound sentence in which one clause is itself a compound sentence. That means two levels of connectors are nested. First find the main relation of the whole sentence, such as contrast with 虽然…但是….
Then look inside one of its clauses for a second pair, such as 因为…所以…. Each level must keep its own matching pair, and you cannot cross them, so 虽然 never pairs with 所以. Read the outer layer first, then the inner one.
一个复句里，某个分句本身又是一个完整的复句，这就是二重复句（两层关联词嵌套）。
结构： 第一层关联词 + [第二层关联词 + 分句 + 分句] + 分句
✅ 虽然他基础不好，但是因为他每天都练习，所以进步很快。
（外层：虽然…但是 表转折；内层嵌在「但是」分句里：因为…所以 表因果）
规则： 先找全句最大的关系（第一层），再看某个分句内部是否还有一组关联词（第二层）。两层关联词各自配对，不能混用（如「虽然」不能和「所以」搭配）。
Worked examples
| Chinese | Pinyin | English | What it shows |
|---|---|---|---|
| 虽然这次比赛很难，但是因为队员们一直互相鼓励，所以他们最终取得了好成绩。 | Suī rán zhè cì bǐ sài hěn nán, dàn shì yīn wèi duì yuán men yī zhí hù xiāng gǔ lì, suǒ yǐ tā men zuì zhōng qǔ dé le hǎo chéng jì. | Although this competition was hard, because the teammates kept encouraging each other, they ultimately achieved good results. | Minimal two-layer frame: outer 虽然/但是 (concession), inner 因为/所以 (causation) nested inside the 但是-clause |
| 因为他不但工作认真负责，而且对同事十分友善，所以大家都愿意和他合作。 | Yīn wèi tā bù dàn gōng zuò rèn zhēn fù zé, ér qiě duì tóng shì shí fēn yǒu shàn, suǒ yǐ dà jiā dōu yuàn yì hé tā hé zuò. | Because he is not only conscientious at work but also very kind to colleagues, everyone is willing to cooperate with him. | Outer 因为/所以 (causation) with inner 不但/而且 (additive) nested inside the 因为-clause — a new inner-pair type |
| 虽然他平时工作很忙，但是他一有时间就会去看望父母。 | Suī rán tā píng shí gōng zuò hěn máng, dàn shì tā yī yǒu shí jiān jiù huì qù kàn wàng fù mǔ. | Although he is usually very busy with work, as soon as he has time he goes to visit his parents. | Outer 虽然/但是 with inner 一…就 nested inside the 但是-clause — a third inner-pair type |
Word by word
Each word in this pattern on its own: what it does here, the structure, three more examples, and the mistake to avoid.
虽然…但是… (suī rán…dàn shì)
Opens a contrast, and a second layer of connectors can sit inside either clause.
Structure: 虽然 + A，但是 + B
| Chinese | Pinyin | English |
|---|---|---|
| 虽然今天很冷，但是他一想到要见老朋友，就觉得很暖和。 | Suī rán jīn tiān hěn lěng, dàn shì tā yì xiǎng dào yào jiàn lǎo péng yǒu, jiù jué de hěn nuǎn huo. | Although it is cold today, the thought of meeting an old friend makes him feel warm. |
| 虽然这份工作很累，但是因为同事们很友好，所以他干得很开心。 | Suī rán zhè fèn gōng zuò hěn lèi, dàn shì yīn wèi tóng shì men hěn yǒu hǎo, suǒ yǐ tā gàn de hěn kāi xīn. | Although this job is tiring, he is happy in it because his colleagues are friendly. |
| 虽然我们刚认识，但是我们一见面就聊了很久。 | Suī rán wǒ men gāng rèn shí, dàn shì wǒ men yí jiàn miàn jiù liáo le hěn jiǔ. | Although we had only just met, we talked for a long time right away. |
Not: 虽然下雨，所以我们没去。 虽然 pairs with 但是 or 可是, not with 所以.
因为…所以… (yīn wèi…suǒ yǐ)
Joins a reason and its result, and can hold another pair of connectors inside the reason.
Structure: 因为 + reason，所以 + result
| Chinese | Pinyin | English |
|---|---|---|
| 因为他不但会说英语，而且会说日语，所以公司派他去东京出差。 | Yīn wèi tā bú dàn huì shuō yīng yǔ, ér qiě huì shuō rì yǔ, suǒ yǐ gōng sī pài tā qù dōng jīng chū chāi. | Because he speaks both English and Japanese, the company sent him to Tokyo on business. |
| 因为昨天下了大雨，所以今天路上很滑。 | Yīn wèi zuó tiān xià le dà yǔ, suǒ yǐ jīn tiān lù shàng hěn huá. | Because it rained heavily yesterday, the road is slippery today. |
| 因为孩子生病了，所以妈妈只好请假，没有去开会。 | Yīn wèi hái zi shēng bìng le, suǒ yǐ mā mā zhǐ hǎo qǐng jià, méi yǒu qù kāi huì. | Because the child was ill, Mom had to take leave and did not go to the meeting. |
Not: 因为他病了，但是没来上班。 因为 pairs with 所以. 但是 marks a contrast, which this sentence does not have.
不但…而且… (bú dàn…ér qiě)
Adds a second quality on top of the first, and can sit inside a larger pair.
Structure: 不但 + A，而且 + B
| Chinese | Pinyin | English |
|---|---|---|
| 这家餐厅不但菜好吃，而且服务很周到。 | Zhè jiā cān tīng bú dàn cài hǎo chī, ér qiě fú wù hěn zhōu dào. | This restaurant not only has delicious food, but the service is also attentive. |
| 他不但会弹钢琴，而且还会作曲。 | Tā bú dàn huì tán gāng qín, ér qiě hái huì zuò qǔ. | He can not only play the piano but also compose. |
| 这本书不但内容有趣，而且价格便宜。 | Zhè běn shū bú dàn nèi róng yǒu qù, ér qiě jià gé pián yi. | This book is not only interesting but also cheap. |
Not: 他不但聪明，所以很努力。 不但 adds an extra quality and needs 而且, 还 or 也, not 所以.
What you need first
Every topic in GraphChinese names its own prerequisites, and these are the grammar points this one is built on. If a sentence here will not parse, one of them is why.
What this opens up
These patterns list Multi-Clause Compound Sentences among their own prerequisites, so they become readable once this one holds.
Questions about Multi-Clause Compound Sentences
What does 二重复句 (Multi-Clause Compound Sentences) mean in Chinese?
A multi-clause compound sentence (二重复句) is a compound sentence in which one clause is itself a compound sentence, so two pairs of connectives are nested. 虽然他基础不好，但是因为他每天都练习… has an outer 虽然…但是 and an inner 因为. It is an HSK 5 grammar point.
How do you use 二重复句 (Multi-Clause Compound Sentences) in a sentence?
虽然这次比赛很难，但是因为队员们一直互相鼓励，所以他们最终取得了好成绩。 — Suī rán zhè cì bǐ sài hěn nán, dàn shì yīn wèi duì yuán men yī zhí hù xiāng gǔ lì, suǒ yǐ tā men zuì zhōng qǔ dé le hǎo chéng jì. — Although this competition was hard, because the teammates kept encouraging each other, they ultimately achieved good results. Minimal two-layer frame: outer 虽然/但是 (concession), inner 因为/所以 (causation) nested inside the 但是-clause.
What do you need to know before 二重复句 (Multi-Clause Compound Sentences)?
Complex Sentences (HSK 5), Purpose & Consequence Clauses (HSK 5), 不但…而且… (HSK 4). This pattern is built out of them, so a sentence here that will not parse usually means one of them has not landed yet.
What does 二重复句 (Multi-Clause Compound Sentences) lead to?
Multi-Layer Compound Sentences (HSK 6). Each of them names 二重复句 (Multi-Clause Compound Sentences) among its own prerequisites.
How do I read a sentence with two layers of connectors?
Find the biggest relation first, such as 虽然…但是…, then look inside one clause for a second pair: 虽然他基础不好，但是因为每天练习，所以进步很快。
Can I mix connectors from different pairs?
No. Each layer needs its own matching pair. 虽然 goes with 但是, 因为 with 所以, and 不但 with 而且. 虽然…所以… is wrong.
Multi-Clause Compound Sentences is one topic of 829. GraphChinese teaches them in prerequisite order, so this pattern reaches you on the day everything it rests on is proven. The whole course, HSK 0 through HSK 6, is $49 once for lifetime access.
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