I saw her yesterday at the market.

我昨天在市場見到她了。

The meeting was scheduled for yesterday but was postponed.

會議原定於昨天舉行，但被推遲了。

Yesterday was a very busy day for me.

昨天對我來說是非常忙碌的一天。

I'm still tired from yesterday's work.

我仍然對昨天的工作感到疲憊。