1, yesterday: refers to the day before today, or generally refers to the past.

2. Today: the day when you speak.

3. Tomorrow: The second day of today also refers to the future and hope.

Words representing time

"Instantaneous" and "sudden" refer to sudden and short time.

First of all, in a flash

Pinyin: shà shí

Meaning: refers to a sudden and extremely short time.

Example: After the thunder, it suddenly rained cats and dogs.

Second, suddenly

Pinyin: Harlan

It means: suddenly, it means that an action or thing appears at an unexpected time.

Suddenly it was cloudy, and then it rained heavily.