She knew today would be a great day.

Meaning: When someone wakes up in the morning, they might feel optimistic about the day ahead and think it will be a great day.

Choice of Words: Knew is the past tense of know, which means to have information about something. Today means the present day. Would is used to express a future event or action. Be is a verb that is used to express existence or a state of being. Great means very good or impressive.

Alternative Expressions

It's gonna be a super day!

Meaning: The speaker is expressing their belief that the current day will be very good.

Choice of Words: **It's** - a contraction of 'it is', **gonna be** - informal way of saying 'going to be', **super** - means very good or excellent, **day** - refers to a period of time from sunrise to sunset.

This day will be filled with joy.

Meaning: The speaker is expressing their hope or belief that the current day will bring a lot of happiness.

Choice of Words: **This day** - refers to the current day, **will be filled with** - means to have something present in a large amount, **joy** - a feeling of great pleasure and happiness.

Related Expressions