（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,再加末兩位數或末位數；

　　586→five hundred and eighty-six,803→eight hundred and three

　　（4）l,000以上,先從右往左數，每三位數加一個“,”,第一個“,”前為thousand.第二個“,”前為

　　million,第三個“,”前為billion（美式）或thousand ,million（英式）,然后一節一節地表示。

　　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）

　　（1）作主語

　　eg.Four Of them come from Paris.

　　（2）作賓語

　　eg.一 How many books would you like？

　　一I would like two.

　　（3）作表語

　　eg.Seven minus two is five.

　　（4）作定語

　　eg.There are three people in my family•

　　（5）作同位語

　　eg. You two will go swimming with us.

　　（6）表具體數字時,hundred,thousand,million用單數。

　　eg. There are six hundred students in our grade.

　　（7）表不確定的數字時,數詞用復數。若帶名詞，再加of hundreds of（數百,成百上千的）,thousands of（數干,成千上萬的）,millions of（數百萬）

　　eg,They arrived in two sand threes.他們三三兩兩地來了。

　　（8）表示“…十”的數詞的復數可以表示人的歲數或年代。

　　eg. He is in his early thirties.他有三十來歲（31—34歲）：

　　This took place in the 1930s.這事發生在二十世紀三十年代；

　　（9）表示時刻

　　eg.I watch CCTV News at seven o’clock every evening.