初中英語知識點(diǎn)總結(jié)：初中英語語法——不定冠詞知識點(diǎn)總結(jié)

　　我們需要一個蘋果和一把刀子。

　　1.a和an的區(qū)別

　　不定冠詞有a[+]和an[+Q]兩種形式，a用于輔音(不是輔音字母)開頭的詞前。an用于元音(不是元音字母)開頭的詞前。

　　a boy, a university, a European country

　　u是元音字母，但發(fā)音是[U(]，是輔音。

　　an hour ，an honor ，an island

　　h是輔音字母，但它不發(fā)音，它的音標(biāo)是是元音。

　　an elephant， an umbrella， an egg

　　2(1)不定冠詞的用法

　?、俜褐?mdash;類人或物。

　　eg. This is a pencil case.

　?、谥覆痪唧w的某個人或物。

　　eg. I met an old man On my way home.

　　③用在序數(shù)詞前,相當(dāng)于another.

　　eg. There’s a third boy near the shop.

　?、鼙硎?ldquo;每—(個)”,相當(dāng)于every.

　　eg. They have music lessons twice a week.

　　必背!

　　give a lesson take a bath have a rest

　　教(一堂)課 洗(個)澡 休息

　　have a talk have a fever have a good time

　　聽報告 發(fā)燒 過得愉快

　　have(take)a walk have a headache have a nice trip

　　散步 頭疼 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)不定冠詞的位置

　?、俨欢ü谠~—般放在所修飾的單數(shù)可數(shù)名詞前。

　　eg, a bike, an egg

　　②當(dāng)名詞被such, what, many修飾時，不定冠詞放在這些詞之后。

　　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.

　?、郛?dāng)名詞前的形容詞前有so, how, too等詞時，不定冠詞應(yīng)放在形容詞之后。

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

　　How nice a film this is!

　?、墚?dāng)名詞前面有形容詞和quite, rather, very時，不定冠詞放在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.