not only

• 这非但无益，而且有害。

  Not only is it not beneficial, it is actually harmful.

• 他非但能完成自己的任务，还肯帮助别人。

  Not only can he finish his own tasks, but he can also help others.

• 非但我不知道，连他也不知道。

  I don't know and nor does he.