冠詞（art.）用在名詞前,幫助說明其意義
冠詞分爲不定冠詞a／an和定冠詞the,放在名詞前、a／3n用在單數可數名詞前（a用於輔音音素開頭的詞前,an用於元音音素開頭的詞前），初中英語基礎語法4-冠詞。
1.不定冠詞
（1）不定冠詞的用法
①泛指—類人或物。
is a pencil case.
She’S a doctor.
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.
e’s a third boy near the shop.
④表示“每—（個）”,相當於every.
have music lessons twice a week.
⑤固定搭配。
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
2.定冠詞的用法表示上文中所提到過的'人或物。
eg：l have two children,a boy and a boy’s name is 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.
（4）用在形容最高級和部分比較級前。
eg Tom is the taller of the two boys.
（5）用在序數詞前。
eg Monday is the second day of a week.
（6）yo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），英語語法《初中英語基礎語法4-冠詞》。
cg 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”。
Greens are having dinner at home.
（9）用在樂器前。
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）用在某些專有名詞和習慣用語中。
the United Nations,the Great Wall,the Summer Palace,the Palace Museum,in the end,in the day,in the middle Of,all the time,in the east,by the way,On the way tO,the（more）……
the（more）…“越…越…”
3.不用冠詞的情況
（1）名詞前有指示代詞this,that,these,those時不用冠詞。
girl is my friend.
（2）名詞前有物主代詞my,your,his her,their等時不用冠詞。
is her sister.
（3）名詞前有whose,which,SO[1ie,any,each,every等代詞時不用冠詞。
h man is Mr Green？
Each student has a beautiful picture.
（4）複數名詞表示一類人或物時不用冠詞。
e young men are teachers,not students.
（5）物質名詞表示種類時不用冠詞。
is white.
（6）抽象名詞表示一般概念時不用冠詞。
she like music？
（7）在球類運動和棋類遊戲前時不用冠詞。
basketball／soccer／chess
（8）在三餐前不用冠詞。
breakfast／lunch／supper／dinner
（9）在人名、地名、節假日、星期、月份前不用。
eg. Tina,China,Tiananmen Square,Beijing,University,New Year’s Day,Tuesday,January
（10）在學科和節目名稱前不用冠詞。
favorite is English.
（11）在某些固定搭配中不用冠詞。
noon, at work,at home,by bus, by air,On foot,from morning till night,at night,gO tO school,go to bed,at last
4.在有些詞組中，用冠詞和不用冠詞意思有較大區別。
in hospital（在住院）；in the hospital（在醫院）
in prison（在坐牢）；in the prison（在監獄裏）
at table（吃飯,用餐）；at the table（在桌旁）
in front of（在某個範圍之外的前面）；in the front of（在某個範圍之外的前面）
go to college（上大學）；go to the college（去那所大學）
take place（發生）；take the place（代替）
