(6) 用在某些形容詞之前，表示某一類人或事物。例如：
The nurse is kind to the sick.
We should take good care of the old.
(7) 用在某些專有名詞之前和某些習(xí)慣用語中。例如：
the Great Wall， the Summer palace， in the morning， in the open air等。
(8) 用在姓氏復(fù)數(shù)之前，表示“某某一家人”，“某某夫婦”。例如：
the Browns， the whites等。
3. 不用冠詞的情況
(1) 某些專有名詞，抽象名詞和物質(zhì)名詞前一般不用冠詞。例如：
China， Canada， Japanese， glass， water， love等。
(2) 名詞前已有作定語用的this， that， my， your， whose， some， any， no， each， every等代詞時(shí)，不用冠詞。例如：
That is my cap.
I have some questions.
Go down this street.
(3) 復(fù)數(shù)名詞表示一類人或事物時(shí)，不用冠詞。
They are workers.
We are students.
(4) 稱呼語前不用冠詞，表示頭銜和職務(wù)的名詞前也不加冠詞。例如：
I don’t feel well today， Mother.
Bush was made president of the U.S.
(5) 三餐飯的名稱前，球類活動(dòng)，學(xué)科和節(jié)目名詞前，常不用冠詞。例如：
I have lunch at home.
He often plays football after class.
We have English and maths every day.
(6) 在某些固定詞組里，名詞之前常不用冠詞。例如：
By air， at night， at home， go to bed， go to school， on foot， from morning till night 等。
二. 數(shù)詞的用法
數(shù)詞分基數(shù)詞和序數(shù)詞�；鶖�(shù)詞表示數(shù)目，序數(shù)詞表示順序。
1. 基數(shù)詞的用法
(1) 基數(shù)詞在句中主要用作主語、賓語、定語、表語、同位語，例如：
Thirty of them are Party members.(主語)
--- How many would you like？
--- Three ，please.(作賓語)
The nine boys are from Tianjing.(定語)
Six plus four is ten.(表語)
We four will go with you.(同位語)
(2) 表示一個(gè)具體數(shù)字時(shí)，hundred， thousand， million一律不用復(fù)數(shù)；在表示一個(gè)不確定數(shù)字時(shí)則用復(fù)數(shù)。例如：
Our country has a population of 1，300 million people.
There are three thousand students in our school.
After the war， thousands of people became homeless.
Maize is the most important food crop for millions of people in the world.
They arrived in twos and threes.
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