定义和用法

冠词在日常英语中的表达，使用频率特别高，我们在对话中，经常都会带上a, an 或 the，所以在学英语的过程中，千万不要吝啬这三个字，那它们到底应该如何使用？

英语中有两种冠词：定冠词“the”和不定冠词“a/an”。以下是它们的使用方式：

不定冠词 “a/an”：
用于表示泛指或不特定的事物，通常用于单数可数名词前面。

例如：I saw a dog in the park.（我在公园里看到了一只狗。）
不定冠词"a"用于单词的首字母不是元音音素（音标）的情况下，例如a book。
不定冠词"an"用于单词的首字母是元音音素（音标）的情况下，例如an apple。

定冠词 “the”：
用于表示特定的事物或已经被提到过的事物，通常用于单数或复数名词前面。
例如：The book on the table is mine.（桌子上的书是我的。）
“the”也可用于单数或复数名词的前面，表示特指一类事物，如the sun（太阳）、the moon（月亮）等。

不使用冠词（也叫0冠词）：
有时候不使用冠词也是正确的。以下是一些情况：
用在表示泛指、一般真理的名词前，如“water is essential to life”（水对于生命是必不可少的）；
用在专有名词、不可数名词以及复数名词的前面，如“China”、“milk”、“cars”；
用在某些固定短语中，如“by bus”、“at school”、“in bed”等。

思维导图解析

习题-Exercise

Choose the correct article (a/an/the) or no article (Ø) for each sentence.

    ___ cat is sitting on ___ windowsill.
    Answer: The, a

    He wants to be ___ astronaut when he grows up.
    Answer: an

    I need ___ help with this math problem.
    Answer: some

    We went to ___ concert last night and it was amazing.
    Answer: a

    I'm going to ___ gym to work out.
    Answer: the

    He's learning ___ Spanish so he can travel to South America.
    Answer: Ø

    She's an expert in ___ environmental science.
    Answer: Ø

    ___ sun is shining brightly today.
    Answer: The

    I saw ___ elephant at ___ zoo yesterday.
    Answer: an, the

    We need to buy ___ new car soon.
    Answer: a

    I'm looking for ___ new job.
    Answer: a

    ___ milk in the fridge has gone bad.
    Answer: The

    She's ___ excellent cook.
    Answer: an

    We went to ___ park to have a picnic.
    Answer: the

    ___ honesty and integrity are important values.
    Answer: (不填）

    He's riding ___ bicycle to work.
    Answer: a

    We saw ___ movie last night.
    Answer: a

    She's going to ___ university in the fall.
    Answer: (不填）

    ___ children are playing outside.
    Answer: The