不记得经历的事物;没有记住该做的事to forget

• 完全忘记了

  completely forgot

• 忘记锁门

  forget to lock the door

• 忘记告诉大家

  forget to tell everybody

• 忘记自己的责任

  forget one's duty

• 别忘记，今天支部开会。

  Don't forget, the branch is holding a meeting today.

• 我忘记带笔记本。

  I forgot to bring my notebook.