before

• 解放之前

  before the liberation

• 这之前

  before this

• 在动身之前

  before one sets off

• 晚饭之前回来

  come back before dinner

• 八点之前集合

  meet up before eight

• 一个月之前我还遇到过他。

  I met him one month ago.

• 他们走在我们之前。

  They left before us.

• 吃饭之前要洗手。

  You should wash your hands before dinner.

• 他们站在队旗之前宣了誓。

  Standing before the unit's banner, they took the oath.