Question

关于英语语法中冠词的一个语法问题

a an 用于第一次提到的不特定的人或物前 the用于第2次提到的特定的人或物前
谁能多举几个例子 帮助我理解

Answer 1

a 和 an 都是一个/只/件 的意思。

an 是用在所用响音开始的名词，那便是 : A,E,I,O,U.

例: an apple；an elephant；an orange；an ugly duckling(丑天鹅)；an unusual situation (一个不寻常的情形)。

不是响音开始的则用 "a" 如 : a man；a pen；a car 等等。

用法:

An elephant is large than an orange. 一只大象比一只橙大。

That unusual situation is now under controlled. 那不寻常的事态已受控制。

She was seen as an ugly duckling when she was little. 她小的时候被视为一只丑天鹅。

An angle of 90 degrees is a straight angle. 一个90度的角是个直角。(这个例很重要，例中的两个"angle"一个用"an"一个则用"a"。你研究一下便会明白"a"和"an"的用法了)

至於"the "的用法如楼上:

I use to have a dog. The dog liked eating and grew so big.

I walked to school every morning. The school is very far away from my home.

I have a television in my bed room. The television is quite small.

Answer 2

I have a house.The house is yellow.