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 it is!

　　Many a man has gone to the big cities for work.

　　③当名词前的形容词前有so, how, too等词时，不定冠词应放在形容词之后。

　　Eg. She was so nice a girl that she took the blind man to the station.

　　How nice a film this is!

　　④当名词前面有形容词和quite, rather, very时，不定冠词放在quite, rather之后,very之前。

　　eg.It is quite a good book.

　　That is rather a useful too1.

　　This is a very interesting story.