以前 (yǐ qián): ก่อน; แต่ก่อน; ก่อนหน้า; ที่แล้ว; ก่อน; แต่ก่อน; เมื่อก่อน; ที่แล้ว; ในอดีต; เคย

I used to live in Beijing.

Previously, there was a bookstore here.

He didn't like eating spicy food before.

We were classmates before.

People in the past didn't have mobile phones.

I didn't like drinking coffee before.

Three days ago, he went to Beijing.

There used to be a bookstore here.

Long ago, people used candles for light.