5. 用在某些固定短语中。如：a good many, a moment later, a pair of, as a matter of fact, as a result, at a loss, catch a cold, have a bath, do sb. a favor, have a break, in a hurry, keep an eye on, lend a hand等。

★定冠词the，多表示特指。

1. 用于单数可数名词前，表示类指。如：

The donkey is a very useful animal.

2. 用于特指一定的人或物或上下文提到的人或物。如：

This is the house where the famous writer once lived.

A boy and a girl were sitting on a bench. The boy was smiling but the girl looked angry.

3. 用在表示世界上独一无二的事物前。如：

One spaceman successfully landed on the moon.

4. 用在由普通名词构成的专有名词前以及表示江、河、湖、海、山川、群岛等的名词前。如：

I visited the Great Wall last month.

The Yangtze River is the longest river in China.

5. 用在序数词前、形容词最高级前或用于特指"两者中较......的一个"。如：

He is the first to come here.

This is the fastest horse.

Jack is the taller of the two boys.

6. 用在表姓氏的复数名词前，指全家人或全家人中的一些人，如夫妇俩等。如：

The Browns are from London and they have lived here for a long time.

7. 和某些形容词连用，指某种类型的群体。如：

The sick and the wounded were sent home.

8. 用在某些固定短语中。如：all over the country, at the age of, by the way, in the distance, in the middle of, on the phone, on the right / left, in the 1990s等。

★零冠词（不用冠词的情况）。

1. 名词前有this, that, these, those, some, no等或形容词性物主代词时不用冠词。如：

This time last year they were in Africa.