我昨天必須加班。

I had to work overtime yesterday.

Source: Tatoeba

Sentence Composition

1 我 wǒ
  1. I
  2. me
  3. my
2 昨天 zuótiān yesterday
3 必須 bìxū
  1. to have to
  2. must
  3. compulsory
  4. necessarily
4 加班 jiābān to work overtime