介词 at 的用法

at + 准确/特定地点

She’s sitting at the table in the corner.
She was standing at the top of the stairs.
The dog came and lay down at (= next to) my feet.
Turn left at the traffic lights, and you’ll see the hospital straight ahead.
The two vans collided at the crossroads.

at home

at school

I enjoyed my three years at university.

at + 活动，引申为地点

We spent the afternoon at a football match.
I called her but she was at lunch (= away, eating her lunch).
Why wasn’t Stephen at the meeting, then?

at + 时间

at + 时刻

There’s a meeting at 2.30 this afternoon.
My last class ends at 4 o’clock.

at + age/age of

In theory, women can still have children at the age of 50.
People in Britain legally reach adulthood at 18.
I was married with four children at your age.

at the moment (= now)

I’m busy at the moment (= now) – can you call back later?

at the time (= then)

It’s a shame I wasn’t here to meet you – I was overseas at the time (= then).

at + the beginning/end of

That bit at the beginning of the film was brilliant.
I always like to leave my desk clear at the end of the day.

at the weekend

Rioters hurled rocks and petrol bombs in clashes with police at the weekend.

at + 其他时间

Are you free at lunchtime?
The bells ring at regular intervals through the day.
At no time/point did the company do anything illegal.

verb + at + 对象/方向

She smiled at me.
They waved at us as we drove by.
He’s always shouting at the children.

aim at

She aimed at the target.
The talks are aimed at finding a mutually agreeable solution.

look at

“Look at me! Look at me!” called the little girl.
She darted an angry look at me and I shut up.

feeling + at + cause

We were surprised at the news.
We were all delighted at the news.
I was quite excited at the prospect.
Why does no one ever laugh at my jokes?
There was a chorus of disapproval at his words.
He looked very disappointed at their decision, but did not argue.
I cringed at the sight of my dad dancing.
It was a courageous decision to resign in protest at the company’s pollution record.

评价 + at + 活动

I was never very good at sports.
He’s very good at getting on with people.
She’s hopeless at organizing things.
I’m not much good at knitting .
Dave is normally very bad at remembering birthdays.
I expected her to be better at French after studying it for so many years.
Your mother’s really brilliant at Scrabble.
You’re even worse at maths than I am!

at + 价格/温度/速率

I’m not going to buy those shoes at $150!
Water boils at 212° Fahrenheit and 100° Celsius/Centigrade.
Inflation is running at 5 percent.
He was driving at 120 mph when the police spotted him.
We sell a wide range of cosmetics and toiletries at a very reasonable price.
When you buy a new computer, you usually get software included at no extra cost.

at + 活动状态

a country at war
children at play
He felt completely at ease.
He says he’s at peace when he’s walking in the mountains.
Your father is hard at work in his study.
They’ve been at war for the last five years.
Of the ten men who escaped this morning from Dartmoor Prison, only two are still at liberty .

at + 最高级

I’m afraid we can only pay you $12 an hour at (the) most.
At best you’ll get to speak to some assistant – you’ll never reach anyone important.