The Chinese word 不但 means “not only” or “not just”. It is used to introduce an additional statement or fact that goes beyond what was previously mentioned. For example, “不但他会说中文，而且他还会说英文” means “Not only can he speak Chinese, but he can also speak English”. The word 不但 is often used in combination with the conjunction 而且 to express a more complete thought.
Conjunction: not only
|他不但会说中文，还会说日语||tā bùdàn huì shuō zhōngwén, hái huì shuō rìyǔ||He not only speaks Chinese, but also speaks Japanese|
|这家餐厅不但菜品好，服务也很棒||zhè jiā cāntīng bùdàn càipǐn hǎo, fúwù yě hěn bàng||This restaurant not only has good food, but also great service|
|这本书不但内容丰富，而且写得非常生动||zhè běn shū bùdàn nèiróng fēngfù, érqiě xiě de fēicháng shēngdòng||This book not only has rich content, but also is written very vividly|
|她不但漂亮，而且聪明||tā bùdàn piàoliang, érqiě cōngmíng||She not only is beautiful, but also intelligent|
|这个城市不但有名胜古迹，还有丰富的文化活动||zhège chéngshì bùdàn yǒu míngshèng gǔjì, hái yǒu fēngfù de wénhuà huódòng||This city not only has famous scenic spots and historical sites, but also has rich cultural activities|
|这家公司不但有高薪水，还有很多员工福利||zhè jiā gōngsī bùdàn yǒu gāo xīnshuǐ, hái yǒu hěn duō yuángōng fúlì||This company not only has high salaries, but also has many employee benefits|
不但 is part of HSK Level 4 in HSK 2.0. In the newer HSK 3.0 it is part of HSK Level 2.