初一英语数词、序数词教案_初中数词与序数词教案

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初一英语数词、序数词教案由刀豆文库小编整理，希望给你工作、学习、生活带来方便，猜你可能喜欢“初中数词与序数词教案”。

（一）基数词在英语中表示数目的词称为基数词。1.基数词的构成（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 先说“几十”，再说“几”，中间加连字符。

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先说“几百”，再加and,再加末两位数或末位数； 586→five hundred and eighty-six,803→eight hundred and three

（4）l,000以上,先从右往左数，每三位数加一个“,”,第一个“,”前为thousand.第二个“,”前为 million,第三个“,”前为billion（美式）或thousand ,million（英式）,然后一节一节地表示。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）

4.基数词的用法:

1.表年代。年份通常分成两部分说。例如：

1626 年sixteen twenty-six

2000 年twenty hundred／two thousand 1902年 nineteen o（或者and）two／nineteen hundred and two

2003→two thousand and three 2.表时间

①整点5：00 five／five o'clock ②半小时以内（包括半小时）

eleven thirty（钟点＋分钟）

half past eleven（分钟＋past＋钟点）

eight twenty

twenty past eight ③超过半小时（到下一个钟点）

one fifty-eight（钟点＋分钟）

two to two（分钟＋to＋下一个钟点）

注意：半小时以内的表达用介词past，表达“几点过几分”之意；超过半小时要用介词 to，表示“到下一个钟点还有几分”（即“几点差几分”）之意。

④一刻（15分钟）常用a quarter表示。如：a quarter to seven六点四十五分（七点差一刻）

a．m．表上午，p．m．表下午。例如：7：20a．m．早7点20分。

3．表电话、车牌等号码

碰到号码应把数字分开一个个说。“o”读成［u］，英国人常把相同的两个数如22，读作 double two。例如：045-4166386o four five-four one double six three eight six

4．表长、宽、高、深，货币等计量

①货币的读写。

7．35seven dollars thirty-five cents七美元三十五美分

￡3．75three pounds seventy-five pence三英镑七十五便士

￥5．24 five yuan twenty-four fen五元二角四分

a five-pound note一张五英镑的钞票

注意：dollar，pound，cent有复数变化，而人民币的yuan，fen无此变化。

②年龄、长、宽等计量的表达法。

He is sixteen（years old），and he's one and a half metres tall．

5．表编号，即在特定的一些用法中表顺序。

Leon 9＝Leon Nine ＝The Ninth Leon第九课（注意大小写变化）

Page 51＝Page Fifty-one第五十一页

Room 203＝Room two o three 203房间

the No．17 bus ＝the number seventeen bus第十七路公共汽车

6.数的计算（初中仅见加法表达）

“How much／What is two and four？”“Two and four is six．” 7．温度及比赛分数的读写

①温度The temperature will be 2—9．（2—9读写作two to nine）

②比赛分数

At the end of the first half we were winning 2：1．（2：1读写作two to one）

8．数字的具体表达与约略表达

①具体表达ten

（十）→ten books（十本书）→ten of the books（其中的十本书）

②约略表达tens（若干个“十”）→tens of the books（数十本书）。依此类推：

hundreds（若干个“百”）→hundreds of．．．（数以百计的……，成百上千的……）

thousands（若干个“千”）→thousands of．．．（数以千计的……，成千上万的……）。例如：

There are over seven hundred students on the ground．操场上有七百多名学生。

There are（several）hundreds of students on the ground．操场上有几百名学生。

应注意hundreds of．．．等前可用some，several，many，tens of．．．等词语修饰。

9.基数词的其它表达

①表“一次、两次”英语用once和twice。“三次”用three times，依此类推。

②注意下列表达

in one's teens在十几岁时；in one's twenties在二十多岁时；in the nineties在九十年代；one or two hours一两个小时；two hours and a half ＝two and a half hours两个半小时

10.小数的表示方法：

小数的表示法和汉语中小数表示法一样，小数点后的数字是“ 见几读几”，点用point 表示。

27.832 twenty-seven point eight three two 3)百分数 40%----forty percent 0.3%----(zero)point three percent 11.表示年代或岁数时，用逢十的基数词的复数形式 in the 1960s 二十世纪六十年代 in his fifties 在他五十多岁的时候

in his early twenties 在他二十岁出头的时候表示十几岁时要用in one’s teens

一．读出下列数字。1).5/15/50/55

2)13/30/33 3)14/40/44

5102

345

1,658

83,890

6,783,310 ________________________________________________________________

_____________________________________________________________________ 4).1:05 _______________ 8:15 _______________3:30_______________

9:32 _______________10:45 _______________ 1:58 _______________ 5).1991

1874

2000

6)在20世纪50年代_______________在14世纪80年代__________________ 7）在他60几岁时_________________ 在我40几岁时_____________________ 8)“一次”___________ “两次”____________ “三次以上” _______________ 9)1).Wang Qing is a __________________(一个五岁大的男孩)boy.1o).We can see __________________(数千颗星星)stars at night if it doesn„t rain.11).More than __________________(超过一万)people took part in the Walk For Millions.(参加了百万行)

二、选择填空

1.Two ______________ died of cold last winter.A.hundreds old people B.hundreds old peoples C.hundred old people D.hundred old peoples 2.Henry is __________ tallest in their cla.A.three B.the three C.third D.the third 3.When springs comes, __________ trees are planted in our city.A.millions of B.a million of C.two millions D.million of 4.John began to learn Japanese by himself in _________.A.the fifty B.the fifties C.his fifty D.his fifties 5.---What‟s the English for 12:30?---It‟s __________.A.twelve and thirty B.one to thirty C.twelve thirty D.an half past twelve 6.In ____________ Marx(马克思)began to learn Ruian(俄语)。A.a 1870 B.the 1870 C.the 1870s D.his 1870

7.There are about two ____________ students in the school.A.thousand B.thousands C.thousand of D.thousands of

8.The _________ question is much more difficult than this one.A.sixth B.six C.sixteen D.sixty 9.In our city __________ people have moved into their new houses.A.thousand B.thousands C.thousands of D.two thousands 10.In our city __________ people have moved into their new houses.A.thousand B.thousands C.thousands of D.two thousands 11.She is _______, but she looks young.A.in her fifty B.at her fifty C.in her fifties D.at her fifties 12.Our summer holiday is coming.Two ________ the students in our school will go to the beach.A.hundred B.hundreds C.hundred of D.hundreds of

13.------How many people will come to Beijing for the 2008 Olympic Games?

------It‟s hard to say._________, I think.A.Millions of

B.Million

C.Two million of

D.Two millions of 14..I have_________ orange.You may drink it.A.a little

B.a few

C.few

D.little 15.Jim often gets up at _______.A.a quarter past six B.a quarter pa six C.six a quarter D.six fifteenth 16．There are _______ days in a year．（'99河北）

A．three hundreds sixty-five

B．three hundreds and sixty five

C．three hundred and sixty-five

D．three hundred and sixty five 17．Six million，six hundred and sixty-six thousand，six hundred and sixty-six is _______ ．

A．6，666，666

B．666，666，666

C．6，600，666

D．60，600，666

18．There are _______ students in our school．

A．eight hundred and fifty four

B．eight hundred and fifty-four

C．eight hundreds and fifty-four