冠词分为定冠词（the）和不定冠词（a/an）
定冠词the的用法小结
1、特指某些人或某些物
eg：take the medicine. / Beijing is the capital of China. / Where is the girl in red?
2、上文提到过的人或事
eg：He bought a house. I have been to the house.
3、指谈话双方都知道的人或事物
eg：Let’s go to the computer room. / It’s in the desk.
3、指世上独一无二的事物
eg：the sun, the earth, the sky
4、用于两个人或事物比较时起特指作用作用的比较级前
eg：He is the taller of the two boys.
5、与形容词或分词连用表示一类人
eg：the rich, the poor / the living
6、用在形容词最高级或序数词前
eg：the second, the biggest.
7、用在表示西洋类乐器的名词前，但中国乐器前不加the
eg：play the piano / guitar / violin / drums
8、用在姓氏的复数名词前，表示“一家人”，谓语动词用复数
eg：the Greens, the Chens, the Haos
不定冠词a/an用法小结
1、第一次提到某人或某物时
eg：Do you want a notebook? / This is an apple.
2、用在序数词前表示“又一，再一”
eg：The teacher sang him a second song. / Tom tried a second time.
3、当名词被such, half, what修饰时，不定冠词放在这些词的后面
eg：such a nice girl, half an hour, what a / an…
4、当名词前面的形容词之前有so, how时，不定冠词a, an要后置
eg：He is so good a boy that he often helps others.
How red an apple it is.
5、当名词前有形容词和quite, very, rather时，不定冠词a, an置于quite和rather之后，very之前
eg：quite a good boy, a very moving movie, rather a cold day
特别提醒：不定冠词a, an的区别
an用在以元音因素开头的单词前，a用在以辅音因素开头的单词前
判断一个单词是用a还是用an，要看发音的首因素，而不是首字母
20个元音因素： /a:/, /i:/, /e/, /ɔ:/, /u:/, /ə:/, /ʌ/, /i/, /æ/, /ɔ/, /u/, /ə/
/ei/, /ai/, /ɔi/, /əu/, /au/, /iə/, /eə/, /uə/
eg: an honest boy, an hour, an elephant, a panda, an orange, an MP4,
（1）用an的字母：a, e, f, h, i, l, m, n, o, r, s, x
（2）以u开头的单词，要特别注意
eg：an umbrella, a usual book, a university, an unusual one
零冠词的用法（即不用任何冠词）
1、在专有名词、抽象名词和物质名词前不加冠词
eg：We live in Hubei Province. Wuhan is a large city.
Failure is the mother of success. / Water is the most important thing for us.
2、一日三餐、球类和学科前不加冠词
eg：have breakfast, play soccer / basketball / volleyball…, I like Science.
3、表示节日、季节、星期、月份的名词前不加冠词
eg：Spring Festival is important. / Today is Monday. / Spring comes. / We will come in July.
4、在称呼和头衔前不加冠词
eg：Professor Wang, He is captain of the team.
5、在物主代词、指示代词、名词所有格和不定代词前不加冠词
eg：His pen is good. / What are these? / Everything is OK. / Jane’s dress is nice.
6、不可数名词前一般不加冠词
eg：Which do you like better, fish or chicken?
7、泛指的复数前不用冠词
eg：Animals live in the forest. / There are trees and flowers in the park.
8、与by连用的交通工具前不用冠词，但与take或介词连用时，名词前要加冠词
eg：by car, take a bus / take the subway / He goes to school in a car.