Usages of búdàn
我 不但 想 去 超市， 而且 要 马上 买 水。Wǒ búdàn xiǎng qù chāoshì, érqiě yào mǎshàng mǎi shuǐ.
I not only want to go to the supermarket, but also need to buy water right away.
我们 不但 复习 这 本 书， 而且 练习 说 和 写。Wǒmen búdàn fùxí zhè běn shū, érqiě liànxí shuō hé xiě.
We not only review this book, but also practice speaking and writing.
今天 我 不但 开会， 而且 要 马上 给 她 回 邮件， 我们 晚上 再 聊天。Jīntiān wǒ búdàn kāihuì, érqiě yào mǎshàng gěi tā huí yóujiàn, wǒmen wǎnshang zài liáotiān.
Today I not only have a meeting, but also need to reply to her email right away; let’s chat again tonight.
她 笑 着 说， 在 家 一直 玩 游戏 的 时候， 常常 会 忘记 时间； 在 公园 打 篮球 不但 对 健康 好， 而且 可以 提高 信心。tā xiào zhe shuō, zài jiā yìzhí wán yóuxì de shíhou, chángcháng huì wàngjì shíjiān; zài gōngyuán dǎ lánqiú búdàn duì jiànkāng hǎo, érqiě kěyǐ tígāo xìnxīn.
She said with a smile that when she keeps playing games at home she often forgets the time; playing basketball in the park is not only good for her health, but can also increase her confidence.
多 走路 少 开车 不但 能 节省 能源， 还 可以 减少 污染。duō zǒulù shǎo kāichē búdàn néng jiéshěng néngyuán, hái kěyǐ jiǎnshǎo wūrǎn.
Walking more and driving less not only saves energy, but can also reduce pollution.
她 不但 很 聪明， 而且 很 诚实， 所以 大家 都 愿意 跟 她 合作。tā búdàn hěn cōngming, érqiě hěn chéngshí, suǒyǐ dàjiā dōu yuànyì gēn tā hézuò.
She is not only smart, but also honest, so everyone is willing to work with her.
Elon.io is an online learning platform
We have an entire course teaching Chinese grammar and vocabulary.