不但…而且
Pattern
不但 + clause 1，而且 + clause 2
Key words
Core idea
不但…而且… means “not only... but also...”
The second point adds to or strengthens the first point.
Usage boundary
Use this pattern when the two points describe the same subject or closely related subjects. The second point should feel like added information, not an unrelated sentence.
Compare with addition
而且 can add one point by itself. 不但…而且… creates a paired frame.
Examples
他不但会说中文，而且写得很好。
Tā bùdàn huì shuō Zhōngwén, érqiě xiě de hěn hǎo.
He not only can speak Chinese, but also writes very well.
这家店不但便宜，而且很好吃。
Zhè jiā diàn bùdàn piányi, érqiě hěn hǎochī.
This place is not only cheap, but also very tasty.
今天不但冷，而且下雨。
Jīntiān bùdàn lěng, érqiě xià yǔ.
Today is not only cold, but also rainy.
Common mistakes
Avoid
他会不但说中文，而且写得很好。
Use
他不但会说中文，而且写得很好。
不但 comes before the first point being added to.
Seen in stories
The Comment Section Plan
他们不但公开说明情况，而且把内部流程更新成清单。
They not only explained the situation publicly, but also turned the internal procedure into a checklist.
The Bubble Tea Code
马克看着店员，不但突然忘了所有的词，而且紧张得脑袋一片空白。
Mark looked at the clerk, not only did he suddenly forget all the words, but he was also so nervous his mind went blank.