We use 'already' to say that something happened before now or earlier than expected. It shows that an action is complete at the time of speaking.
I have already eaten lunch.
She arrived already this morning.
We use 'already' to show we are surprised that something happened quickly or earlier than we thought.
You finished already? That's fast!
He left already? I didn't know that.
'Already' shows that something is true at the present moment, often with present perfect or simple present, and may still be true.
You already know the answer.
He already understands the problem.
'Already' shows that something important is true or confirmed before particular steps or actions in a subject like logic or math.
The theorem is already proven in chapter two.
The solution was already known by experts.
People use 'already' as an informal way to ask someone to do something quickly or to stop waiting.
Come on, already, tell me!
Enough, already, let's start!
