yesterday

昨天

She called me yesterday to ask about the meeting.

她昨天打電話來問會議的事。

不久前、前不久

I only found out about the change yesterday.

我也是前不久才知道有這項變動。

昨天、昨日

Yesterday was the hottest day of the year so far.

昨天是今年到目前為止最熱的一天。

過去、往昔文學用法

He still lives in the yesterdays of his youth.

他至今仍活在年少時的舊日時光裡。