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中考英语语法：不定冠词
We need an apple and a knife.
我们需要一个苹果和一把刀子。
1、a和an的区别
不定冠词有a[+]和an[+Q]两种形式，a用于辅音(不是辅音字母)开头的词前。an用于元音(不是元音字母)开头的词前。
a boy, a university, a European country
u是元音字母，但发音是[U(]，是辅音。
an hour ，an honor ，an island
h是辅音字母，但它不发音，它的音标是是元音。
an elephant， an umbrella， an egg
2、(1)不定冠词的用法
①泛指—类人或物。
eg. This is a pencil case.
②指不具体的某个人或物。
eg. I met an old man On my way home.
③用在序数词前,相当于another.
eg. There’s a third boy near the shop.
④表示“每—(个)”,相当于every.
eg. They have music lessons twice a week.
必背!
give a lesson take a bath have a rest
教(一堂)课 洗(个)澡 休息
have a talk have a fever have a good time
听报告 发烧 过得愉快
have(take)a walk have a headache have a nice trip
散步 头疼 旅途愉快
a lot of, a lot, a little, a few, a glass of, such a/an, have a word with, have a look, have a try, have a swim, a quarter, half an hour, three times a day, have a talk, give a talk, ten Yuan a kilo
(2)不定冠词的位置
①不定冠词—般放在所修饰的单数可数名词前。
eg, a bike, an egg
②当名词被such, what, many修饰时，不定冠词放在这些词之后。
eg.It took me half an hour to finish my homework.
He left in such a hurry that he forgot to close the door.
What a dangerous job ...
