中考網(wǎng)整理了關(guān)于2021年初中英語(yǔ)語(yǔ)法之?dāng)?shù)詞，希望對(duì)同學(xué)們有所幫助，僅供參考。
定義：表示數(shù)目多少或順序多少的詞叫數(shù)詞，數(shù)詞分為基數(shù)詞和序數(shù)詞。表示數(shù)目多少的數(shù)詞叫基數(shù)詞；表示順序的數(shù)詞叫序數(shù)詞。
I基數(shù)詞
1.基數(shù)詞的構(gòu)成
�。�1）1-20
one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen,fourteen,fifteen, sixteen, seventeen, eighteen, nineteen, twenty
�。�2）21-99 先說“幾十”，再說“幾”，中間加連字符。
23→twenty-three,34→thirty-four,45→forty—five,56→fifty-six,67→sixty-seven,78→seventy-eight,89→eighty-nine,91→ninety-one
（3）101—999先說“幾百”，再加and,再加末兩位數(shù)或末位數(shù)；
586→five hundred and eighty-six,803→eight hundred and three
�。�4）l,000以上,先從右往左數(shù)，每三位數(shù)加一個(gè)“,”,第一個(gè)“,”前為thousand.第二個(gè)“,”前為
million,第三個(gè)“,”前為billion（美式）或thousand ,million（英式）,然后一節(jié)一節(jié)地表示。
1,001→one thousand and one
9,785→nine thousand, seven hundred and eighty-five
18,423→eighteen thousand, four hundred and twenty-three
6,260,309→six million two hundred and sixty thousand three hundred and nine
750,000,000,000→seven hundred and fifty, billion（美式） seven hundred and fifty thousand million（英式）
2.基數(shù)詞的用法
�。�1）作主語(yǔ)
eg.Four Of them come from Paris.
�。�2）作賓語(yǔ)
eg.一 How many books would you like？
一I would like two.
（3）作表語(yǔ)
eg.Seven minus two is five.
�。�4）作定語(yǔ)
eg.There are three people in my family?
�。�5）作同位語(yǔ)
eg. You two will go swimming with us.
（6）表具體數(shù)字時(shí),hundred, thousand ,million用單數(shù)。
eg. There are six hundred students in our grade.
（7）表不確定的數(shù)字時(shí),數(shù)詞用復(fù)數(shù)。若帶名詞，再加of。 hundreds of（數(shù)百,成百上千的）,thousands of（數(shù)干,成千上萬(wàn)的）,millions of（數(shù)百萬(wàn)）two thousand (兩千)
Thousands and thousands of people have visited the city.成千上萬(wàn)的人參觀了這座城市。
�。�8）在一些表示“一排”或“一組”的詞組里；
eg,They arrived in two sand threes.他們?nèi)齼蓛傻貋?lái)了。
（9）表示“…十”的數(shù)詞的復(fù)數(shù)可以表示人的歲數(shù)或年代。
eg. He is in his early thirties.他有三十來(lái)歲（31—34歲）：
This took place in the 1930s.這事發(fā)生在二十世紀(jì)三十年代；
�。�10）表示時(shí)刻
鐘點(diǎn)表達(dá)法。
順讀法(鐘點(diǎn)＋分鐘) 如：4:30 four thirty 4:45 four forty-five 4:15 four fifteen 倒讀法(分鐘＋to／past＋鐘點(diǎn))
如：4:30 half past four
4:15 fifteen past four／a quarter past four 4:45 fifteen to five／a quarter to five
eg.I watch CCTV News at seven o’clock every evening.
（11）表示百分?jǐn)?shù)
百分?jǐn)?shù)的表達(dá)方式是：基數(shù)詞+ percent（單數(shù)形式）+of+名詞。如：
Thirty percent of the students in my class are from cities. 我班30%的學(xué)生來(lái)自城市。
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