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冠詞
1. 不定冠詞的用法：
(1)a用在子音前; an用在母音前。
An hour
(2)表同種類的全體， 此時(shí)a帶有any的意味。
A dog is a faithful animal. (=Dogs are faithful animals.)
(3)等于one。
I have a sister and two brothers.
(4)等于the same.
Birds of a feather flock together.
(5)等于per“每一……”。
We work eight hours a day. Ninety miles an hour;
(6)a = a certain， 表說話者不認(rèn)識(shí)此人。
Do you know a Mr. Smith?
(7)物質(zhì)名詞或抽象名詞加a (an)即成普通名詞，
Asparagus is a grass. (a = a kind of) ;
This is a good cloth for summer.
(8)“have (or take) + a + 抽象名詞”，與抽象名詞的動(dòng)詞形同義。
Let us take a swim. = Let us swim.
2.定冠詞的用法：
(1)由于上下文的關(guān)系， 某名詞所指的東西已非常明顯， 或已有一定的范圍， 該名詞應(yīng)加the。
Shut the door.
Please pass me the caster.
(2)表該名詞的總稱。
The cow is a useful animal. (= Cows are useful animals.)
(3)前面已提過的名詞，再度提到時(shí)前面加the。
Once upon a time there was a little boy who lived in a cottage.
The cottage was in the country， and the boy lived there all his life.
(4)用于為片語或子句所修飾的名詞之前。
This is the book that I promised to lend you.
(5)用在宇宙()的天體名詞之前。
The sun; the moon; the sky; the earth;
(6)用在方位，方向等名詞之前。
The sun rises in the east and set in the west.
(7)樂器的名稱前要加the。
To play the piano (violin， guitar， flute， etc.)
(8)表示單位的名詞前要加the。
Gasoline is sold by the gallon.
Meat is sold by the catty.
(9)在更高級(jí)的形容詞或序數(shù)(the first…)之前要加the。
Taiwan is the best place to live in.
(10)專有名詞在下列情況可加the。
(A)海、河、運(yùn)河的名稱：The Thames; the Bahamas;
(B)復(fù)數(shù)形的專有名詞： The West Indies; the Bahamas;
(C)船泊的名稱： The Queen Mary; the Flying Scotsman; the Comet;
(D)書報(bào)、雜志、經(jīng)典的名稱： the Times; the Central Daily News; the Koran;
(E)公共建筑、機(jī)關(guān)的名稱： The Ritz Hotel; the Ministry of Education;
(F)國(guó)民的總稱： the French; the Japanese; the Chinese;
(G)用在姓氏的復(fù)數(shù)前指其全家人： The Chens will move to the country.
3. 冠詞的省略：
(1)稱呼語之前不加冠詞。
Waite， bring my bill， please.
(2)家庭稱謂如父母兄弟前不加冠詞，甚至傭人也都不需加冠詞。
Father is out， but Mother is at home.
Cook has made mince-pies for Christmas.
(3)三餐名稱前不加冠詞。
Come to dinner (breakfast， lunch) with me.
(4)運(yùn)動(dòng)、游戲、顏色、感官的名詞前不加冠詞。
He likes basketball.
White is a beautiful color.
Do you play bridge?
Sight is one of the five senses.
(5)表官職、身份或親屬關(guān)系的名詞當(dāng)補(bǔ)語，或作同位語時(shí)不加冠詞。
He was elected president.
George Ⅵ， King of England.
(6)School; church; hospital等字，指原有的用途時(shí)不加冠詞，若指建筑物本身或場(chǎng)所時(shí)，則要加冠詞。
School begins at eight. (school作抽象名詞用)
The school stands on the hill. (school指建筑物)
(7)兩個(gè)相對(duì)的名詞并用時(shí)不加冠詞。
Arm in arm; day by day; man to man; young and old;
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