This sentence is used to do several different things: to describe a hypothetical scenario, to express a wish or desire, or to formalize a suggestion or demand.

It's essential that she completes the project.

I would love to learn how to cook gourmet meals.

They study together at the library.

This sentence is used to deliver a command or direction.

If only I could meet my favorite celebrity.

The concert starts at 7 PM.

She runs every morning.

This sentence is used to state a fact or make a statement.

Be respectful to your elders.

Please keep the noise down in the library.

The sun sets in the west.

Finish your work before the deadline.