at */*/*/

weak [ət] , strong [æt]

preposition

1) in a place in a particular place

I'll meet you at the main entrance.[/ex]

Does this train stop at Newport?[/ex]

We live at 23 Brookfield Avenue.[/ex]

Trevor's at the doctor's – he'll be back soon.[/ex]

I'm babysitting at Sally's (= at Sally's house) tomorrow night.[/ex]

He wants to spend more time at home with his family.[/ex]

Dad should be at work by now.[/ex]

2) near sth sitting or standing close to something

She was standing at the window, staring out.[/ex]

Why isn't he at his desk?[/ex]

3) used for saying when sth happens used for saying what time something happens, or someone's age when something happens

The match starts at three o'clock.[/ex]

What are you doing at the weekend?[/ex]

At night temperatures sometimes fall to 30 degrees below zero.[/ex]

Mozart was already composing music at the age of five.[/ex]

4) during a process in a particular part of a process or series of events

He dies right at the start of the film.[/ex]

At some point things started to go wrong.[/ex]

5) doing sth taking part in an activity, or involved in a situation

We were at a party last night when you called.[/ex]

Has Karen graduated, or is she still at college?[/ex]

6) used for talking about reactions used for stating what causes a particular reaction

Audiences still laugh at his jokes.[/ex]

She was annoyed at being interrupted.[/ex]

7) used with levels and amounts used for showing the level of prices, temperatures, speeds etc

His Ferrari crashed at 120 miles an hour.[/ex]

The plastic pipes will melt at high temperatures.[/ex]

8) in a particular direction used for saying where an action such as looking, pointing, or hitting is directed

Why are you staring at me like that?[/ex]

She swung her bat at the ball, but missed.[/ex]

9) used for talking about abilities used for saying which skills or abilities someone has or does not have

I've never been very good at sports.[/ex]

He is an expert at getting what he wants.[/ex]

•

at all — used for emphasis when you are saying or asking whether something is even slightly true[/ex]

Has the situation improved at all?[/ex]

Don't you have any money at all?[/ex]

He knows nothing at all about computers.[/ex]

at sth's best/worst/strongest etc — showing the best/worst etc qualities of something[/ex]

This is British cooking at its best.[/ex]