at

US /æt/
UK /æt/
"at" picture
1.

expressing the location or arrival of something or someone

:
She is at the park.
We arrived at the airport on time.
2.

expressing the time of an event

:
The meeting starts at 9 AM.
I usually work at night.
3.

expressing the direction of a look, gesture, or action

:
She looked at him with surprise.
He threw the ball at the wall.