事故发生在前天。

The accident happened the day before yesterday.

Source: Tatoeba

Sentence Composition

1 事故 shìgù accident

classifiers: 樁, 起, 次
2 发生 fāshēng to happen; to occur; to take place; to break out
3 在前 zàiqián
  1. ahead
  2. formerly
  3. in the past
4 天 tiān
  1. day
  2. sky
  3. heaven