冠詞(Article)是印歐語系和閃含語系的諸語中，位於名詞或名詞片語之前或之後，在句子裡主要是對名詞起限定作用的詞。下面是本站小編精心為大家整理的國中英語語法大全之冠詞，希望對大家有幫助，更多內容請關注應屆畢業生網!
冠詞是虛詞，本身不能單獨使用，也沒有詞義，它用在名詞的前面幫助指明名詞的含義。冠詞分為不定冠詞a(an)和定冠詞the兩種。不定冠詞僅用在單數可數名詞前面，表示“一”的意義，但不強調數目觀念，只表示名詞為不特定者。定冠詞則表示名詞為特定者，表示“這”、“那”、“這些”、“那些”的意思，在可數的單複數名詞或不可數名詞前面都可以用。
I 不定冠詞
We need an apple and a knife.
我們需要一個蘋果和一把刀子。
1.a和an的區別
不定冠詞有a[+]和an[+Q]兩種形式，a用於子音(不是子音字母)開頭的詞前。an用於母音(不是母音字母)開頭的詞前。
a boy, a university, a European country
u是母音字母，但發音是[U(]，是子音。
an hour ，an honor ，an island
h是子音字母，但它不發音，它的音標是是母音。
an elephant， an umbrella， an egg
2(1)不定冠詞的用法
①泛指—類人或物。
eg. This is a pencil case.
②指不具體的某個人或物。
eg. I met an old man On my way home.
③用在序數詞前,相當於another.
eg. There’s a third boy near the shop.
④表示“每—(個)”,相當於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
①不定冠詞—般放在所修飾的單數可數名詞前。
eg, a bike, an egg
②當名詞被such, what, many修飾時，不定冠詞放在這些詞之後。
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當名詞前的形容詞前有so, how, too等詞時，不定冠詞應放在形容詞之後。
Eg. She was so nice a girl that she took the blind man to the station.
How nice a film this is!
④當名詞前面有形容詞和quite, rather, very時，不定冠詞放在quite, rather之後,very之前。
is quite a good book.
That is rather a useful too1.
This is a very interesting story.
II.定冠詞的用法
(1)定冠詞的用法表示上文中所提到過的人或物。
eg：I have two children, a boy and a girl. The boy’s name is Mark. The girl’s name is Penny.
(2)特指某(些)人或物。
eg：The girl in a red dress comes from America.
(3)指說話人和聽話人都熟悉的人或物。
eg： My shoes are under the bed.
Please open the window.
(4)用在形容最高階和部分比較級前，及形容詞only， very， same等前面：
Eg: That's the very thing I've been looking for. 那正是我要找的東西。
Tom is the taller of the two boys.
He is the only person who didn't pass the exam.
他是唯一一個沒通過考試的人。
(5)用在序數詞前。
eg Monday is the second day of a week.
Where do you live? I live on the second floor.
(6)用在世界上獨一無二的事物前(如太陽、月亮、世界、地球、天空、宇宙等)。
eg The moon moves round the earth.
(7)用在某些形容詞前，表示—類人或物。
the rich(富人),the poor(窮人),the deaf(聾人),the blind(盲人),the dead(死者),the wounded(傷員)
(8)用在姓氏複數前,表示“某某—家人”或“某某夫婦”。
eg. The Greens are having dinner at home.
(9)用在樂器前。(但中國民族樂器前不用冠詞，play Erhu拉二胡)
eg. play the piano/guitar/violin/drums.
(10)用於逢“十”的複數數詞前，指某個世紀中的幾十年代或人的大約年歲。
eg. In the 1970s, a highway was built to linkup the city with my hometown.
I think he is in the thirties.
(11)用在江河、海洋、山脈、湖泊、群島的名稱的前面。
the Yangzi River 長江
the North China Plain 華北平原
the Rocky Mountains 洛磯山脈
the Black Sea 黑海
(12)用在由普通名詞和另外一些詞構成的專有名詞前面。
the Beijing Railway Station 北京站
the People's Republic of China 中華人民共和國
the United Nations 聯合國
(13)含有定冠詞the的片語。
in the morning (afternoon ,evening )在上午(下午、晚上)
on the right 在左邊
by the way 順便說一下
go to the cinema (theatre ,concert…)去看電影(看戲、聽音樂會……)
in the front of 在前部
in the front of 在中間
at (in) the beginning 開始
in the end 終於
in the daytime 白天
on the one hand , on the other hand 一方面……;另一方面
注意：
表示某一類人或事物時，以下三種方法都可以。如：
The horse is a useful animal.(用定冠詞)
A horse is a useful animal.(用不定冠詞)
Horses are useful animals.(用複數)
馬是一種有用的動物。
