不但...而且 Not Only...But Also
不但...而且 connects two clauses meaning 'not only...but also', showing progression.
Pattern
Subject + 不但 + VP1, 而且 + VP2
Explanation
不但...而且 expresses a progressive relationship where the second clause adds something more significant or surprising than the first. The second point is always stronger.
When both clauses share the same subject, 不但 comes after the subject. When subjects differ, 不但 comes before the first subject.
Examples
他不但会说中文，而且说得很好。
Tā búdàn huì shuō Zhōngwén, érqiě shuō de hěn hǎo.
He not only can speak Chinese, but speaks it very well.
这个地方不但漂亮，而且很安静。
Zhège dìfāng búdàn piàoliang, érqiě hěn ānjìng.
This place is not only beautiful, but also very quiet.
不但我喜欢，而且我妈妈也喜欢。
Búdàn wǒ xǐhuān, érqiě wǒ māma yě xǐhuān.
Not only do I like it, but my mom likes it too.
Common Mistakes
他不但说得很好，而且会说中文。
他不但会说中文，而且说得很好。
The second clause must be the stronger/more advanced point.
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