a/an 与 the 比较

9月1日晚上10:03--10:17

A man and a woman were sitting opposite me. The man was American but I think the woman was British.

When we were on holiday, we stayed at a hotel. Sometimes we had our evening meal at the hotel and sometimes we went to a restaurant.

the 用来表示某个特定的东西

Tom sat down on a chair.

Tom sat down on the chair nearest the door.

Ann is looking for a job.

Did Ann get the job she applied for?

Have you got a car?

I cleaned the car yesterday.

在谈到彼此都知其所指的东西时，也用 the.

Can you turn off the light, please?

I took a taxi to the station.

I'd like to speak to the manager, please.

I must go to the bank to get some money and then I'm going to the post office to get some stamps.

Carol isn't very well. She's gone to the doctor.

I hate going to the dentist.

请比较 a:

Is there a bank near here?

My sister is a dentist.

在下列例句中，必须用 the :

Susan works in the city center.

My brother is in the army.

可以说 once a week/ three times a day/ £1.20 a kilo  等：

'How often do you go to the cinema?' 'About once a month.'

'How much are those potatoes?' ' £1.20 a kilo.'

She works eight hours a day, six days a week.