数词使用语法教案.docx
- 文档编号:552698
- 上传时间:2023-04-29
- 格式:DOCX
- 页数:16
- 大小:21.95KB
数词使用语法教案.docx
《数词使用语法教案.docx》由会员分享,可在线阅读,更多相关《数词使用语法教案.docx(16页珍藏版)》请在冰点文库上搜索。
数词使用语法教案
课程名称:
数词
教学内容:
数词
教学对象:
初一学生
教学目标:
1.可以熟练掌握数词的用法
教学重难点:
掌握数词的用法
知识卡片1
英文日期的表达
1.世纪
1)用“定冠词+序数词+century”表示
例:
在十七世纪、写作:
inthe17thcentury、读作:
intheseventeenthcentury
2)用“定冠词+百位进数+s”表示
例:
在十七世纪写作:
inthe1600s、读作:
inthesixteenhundreds
注意:
这种情况下,实际表达的世纪数是阿拉伯数字本身加一。
2.年代
用“定冠词+(世纪百位进数+十位年代数)+s”表示
例:
在二十世纪三十年代、写作:
inthe1930s、读作:
inthethirtiesofthetwentiethcentury或inthenineteenthirties
表示某年代的早期、中期和晚期,可以在定冠词后添加early,mid-和late,例如:
在二十世纪二十年代早期intheearly1920s;在二十世纪五十年代中期inthemid-1950s
3.年月日
A.年份
四位数年份的读法有下列几种情形:
1)一般情况下,将表示年份的四个数字按前后分为两组,每一组的数字都按基数词来读。
1865年读作eighteensixty-five
1998年读作nineteenninety-eight
2)如果是整百的年,后面的两个“零”读为hundred。
1900年读作nineteenhundred
1800年读作eighteenhundred
3)十位数字上为“零”,该“零”读为字母O的发音。
1809年读作eighteenOnine
4)关于千年的一些读法。
2000年读作twothousand或twentyhundred
2008年读作twothousandandeight或twentyOeight
1008年读作onethousandandeight或tenOeight
5)三位以内数字的年份,它们有两种读法:
一种是按照基数词的方法来读,另一种是一个一个数字来读。
531BC读作fivethreeoneBC/fivehundredandthirty-oneBC
如果是三位数,先读第一位,再把后两个数合起来读:
253读作:
twofifty-three或twohundredandfifty-three
另外:
2000读作:
twothousand,1902读作:
nineteenhundredandtwo或nineteenotwo
如果要使用year,year放在数词之前,例如:
intheyeartwofifty-threeB.C.在公元前253年
B.月份
月份是专有名词,除了少数几个月份外都有缩写形式:
January-Jan.一月 February-Feb.二月 March-Mar.三月
April-Apr.四月 August-Aug.八月 September-Sept.九月
October-Oct.十月 November-Nov.十一月 December-Dec.十二月
注意:
缩写形式后面的点不能省略,因为它是表示缩写形式的符号。
C.日期
日期用序数词表示
例:
十月一日
写作:
October1,October1st,1October,1stOctober,(the)1stofOctober等,其中的October都可以写成缩写形式Oct.
读作:
Octoberthefirst或thefirstofOctober
年月日的表达顺序
用英语表达年月日的顺序:
1)月\日\年
例:
2002年1月17日
写作:
January17(th),2002或Januaryseventeenth,2002(日和年之间需用逗号隔开)
读作:
Januarytheseventeenth,twothousandandtwo
2)日\月\年
例:
2002年1月17日
写作:
17(th)January,2002或theseventeenthofJanuary,2002(月和年之间需用逗号隔开)
读作:
theseventeenthofJanuary,twothousandandtwo
日期表达中介词的使用:
若指在哪一年或哪一月,用介词in;若具体到某一天,需用介词on。
例如:
Shewasbornin1989.
ShewasborninAugust.
ShewasborninAugust1989.
Shewasbornon2ndAugust,1989.
Exercise
1.When is your birthday?
On ________.
A.May 3th
B.April 2rd
C.March 31st
2.-What's the date today,Dad?
-Oh!
It's ____1st.Happy Children's Day,Kangkang!
A.April
B.May
C.June
D.July
2.--When is our National Day(国庆节)?
--It's in _________.
A.August
B.September
C.October
4.--When is your father's birthday?
---It's October23rd,2004.
A.October twenty-third
B.twenty-third October
C.October twentieth-third
D.October the twenty-three
5.--What's the date today?
--It's June ______,2014.
A.the fifteen
B.the nineteenth
C.eighteen
6.--I heard your grandpa used to be a teacher.
--Yes.He was a Chinese teacher ______.
A.on the 1950s
B.in the 1950s
C.at the 1950's
D.in 1950's
7.About ________ of the workers in the factory were born in the ________.
A.two-thirds,1970
B.two-thirds,1970s
C.two-third,1970
D.two-third,1970s
8.His father joined the Party in_____ and died in_____.
A.1930s; his fifty
B.1930; his fifties
C.the 1930s; fifty
D.D.the 1930; his fifties
知识卡片2
倍数的表达法:
表示两倍用twice,表示三或三以上的倍数用基数词+times.
其句式有:
1.“…times+形容词/副词的比较级+than…”例如:
LineABisthreetimeslongerthanlineCD.
线段AB是(线段)CD的三倍长。
Thishallisfivetimesbiggerthanourclassroom.
这个大厅比我们的教室大5倍。
Thisropeistwicelongerthanthatone.
Thishallisfivetimesbiggerthanourclassroom.
Thecarrunstwicefasterthanthattruck.
2.“…times+as+形容词/副词的原级+as…”例如:
Thistableisthreetimesaslongasthatone.
这张桌子是那张桌子的三倍长。
Thisdictionaryisfivetimesasthickastheoneyouborrowedfromthelibrary.
这本词典的厚度是你从图书馆借的那本(厚度)的5倍。
AsiaisfourtimesaslargeasEurope
亚洲的面积是欧洲的四倍。
Thisbigstoneisthreetimesasheavyasthatone.
这块大石头的重量是那一块的三倍。
(这块石头比那块重二倍)
Theplaneflewtentimesashighasthekite.
那架飞机飞行高度是那个风筝的十倍。
(高出九倍)
3.“…times+the+名词(如:
size,height,weight,length,width,age等)+of…”例如:
Theearthis49timesthesizeofthemoon.
地球的体积是月球的49倍。
Thisriveristhreetimesthedepthofthatone.
这条河是那条河的三倍深。
Thisstreetisfourtimesthelengthofthatstreet.
这条街是那条街的四倍长。
Thishillisfourtimestheheightofthatsmallone.
这座山的高度是那座小山的四倍。
(比那座小山高三倍)
4.“…times+more+名词+than…”例如:
Heearnsfivetimesmoremoneythanhedidtenyearsago.
他现在挣的钱比十年前挣的多5倍。
Therearetwicemorestudentsinourclassthanintheirs.
我们班的学生人数比他们班多两倍。
5.“…times+asmany(或much)+名词+as…”例如:
We'veproducedtwiceasmuchcottonthisyearas(wedid)tenyearsago.
今年我们生产的棉花比十年前多了一倍。
(汉语中的多一倍实际上也指两倍一样多。
)
Hehasgotthreetimesasmanybooksashissister.
他拥有的书的数量是他妹妹的3倍。
Exercise
1.Americanseat________vegetablesperpersontodayastheydidin1910.
A.morethantwice
B.astwiceasmany
C.twiceasmanyas
D.morethantwiceasmany
2.Paperproducedeveryyearis_______theworld'sproductionofvehicles.
A.thethreeweightof
B.threetimestheweightof
C.asthreetimesheavyas
D.threetimesasheavieras(heavier应改为原级)
3.WiththehelpoftheGermanexperts,thefactoryproduced______carsin1993astheyearbefore.
A.astwicemany
B.asmanytwice
C.twiceasmany
D.twicemanyas
4.Thisshipmeasures________thatone.
A.astwiceaslong
B.astwicelongas
C.twicelongas
D.twiceaslongas
5.Afterthenewtechnique(技术)wasintroduced,thefactoryproduced_______tractors(拖拉机)in1988astheyearbefore.
A.astwicemany
B.asmanyas
C.astwiceasmany
D.twiceasmany
6.ItisreportedthattheUnitedStatesuses________energyasthewholeofEurope.
A.astwice
B.twicemuch
C.twicemuchas
D.twiceasmuch
7.Thehouserentisexpensive,I’vegotabouthalfthespaceIhadathomeandI’mpaying________here.
A.asthreetimesmuch
B.asmuchthreetimes
C.muchasthreetimes
D.threetimesasmuch
8.WiththehelpoftheGermanexperts,thefactoryproduced________carsin1993astheyearbefore.
A.astwicemany
B.asmanyastwice
C.astwiceasmany
D.twiceasmany
9.Thehouserentisexpensive.I'vegotabouthalfthespaceIhadathomeandI'mpaying_______here.
A.asthreetimesmuch
B.asmuchthreetimes
C.muchasthreetimes
D.threetimesasmuch
知识卡片3
数字之分数表达
一、用“基数词+序数词”表示:
分数在英语中通常是借助于基数词和序数词来共同表达的。
其中基数词表示分子,序数词表示分母。
例如:
1.Thecentimeterisone-tenthofthedecimeterorone-hundredthofthemeter.厘米是分米的十分之一,或者说是米的百分之一。
2.However,thenumberofboyswillbeathirdorlessthanthegirlsintheclass.但是,班里男生的人数将比女生少三分之一或更少。
注意:
a.分子除用one外,也可用a;
b.如果分子大于1,分母要用复数形式。
C.但是,1/2不能说a(one)second,而要说a(one)half。
例如:
3.Thesumofonehalf,onethirdandonefourthofacertainnumberis13.某数的1/2,1/3和1/4的和是13。
[例题]1.______ of us students were born in ______.
A.Two-thirds; 1990s
B.Two-third; the 1990s
C.Two-thirds; the 1990
D.Two-thirds; the 1990s
另外,注意:
分数修饰名词时,若该名词是不可数名词只能用单数;若是可数名词,用单数或复数均可。
但是,若它们在句子中作主语,则谓语动词是用单数还是复数取决于名词,即与分数所修饰的名词保持一致。
例如:
4.Onlyone-fifthofairconsistsofoxygen.氧气只占空气的1/5。
5.Abouttwothirdsofthestudentsattendthemeeting.大约2/3的学生都参加了会议。
[例题]
1.There are fifty students in our class,____ of the boys _____ football.
A.two third; likes
B.two thirds; like
C.two thirds; likes
2.About threeof_____ the housework_____usually done by my mother in my family.
A.fifths;are
B.fifth;is
C.fifth;are
D.fifths;is
3.____ of the city was covered with the heavy smog.
A.Two-third
B.Two-thirds
C.Two-three
D.Two-threes
带分数也是常见的英语数词表达。
所谓带分数,实际上是“整数+分数”,表达时分而述之,只是整数部分与分数部分要用连词and连接。
当带分数修饰名词时,该名词通常是复数,但若名词置于整数one或a之后,分数之前则用单数。
例如:
6.Youshouldfinishtheworkwithinoneandafourthhours.你应在1.25小时内完成工作。
7.Theatombreaksupinaminuteandaquarter.原子在1.25分钟内裂变。
二、用percent等表示:
表示百分之一可以说one(a)hundredth,但更常用onepercent或percent,即用百分数表示法来表达。
例如:
8.Ourbodiesare65percentwater.我们人体含65%水分。
9.Seventy-fivepercentoftheearth'ssurfaceiscoveredbywater.地球表面的75%被水覆盖着。
10.Eighty-fivepercentofthestudentsinEnglishdepartmentaregirls.英语系85%学生是女生。
三、用“基数词+介词+基数词”表示:
借助介词表示分数,介词前的数词是分子,介词后的数词是分母。
这种结构中的介词主要有in,outof,of以及to等。
例如:
11.Ninety-ninepeopleoutofahundred,iftheywereaskedwhofirstfoundAmerica,wouldanswerClumbus.如果要问是谁首先发现美洲,一百个人中有九十九个(百分之九十九)将回答是哥伦布。
12.Themapisdrawntoascale([skeil]比率;缩尺)ofoneoftenthousand.这张地图是按万分之一的比例绘制的。
Exercise
1.--Jack,____of the oranges_____gone bad.
--We’d better eat up the rest as soon as possible.
A.one fifth;have
B.one fifth;has
C.one fifths;have
D.first five;has
2.About____ of the earth_____covered with waterbut we have less and lessavailable fresh water.
A.three-fourth,is
B.three-fourths,is
C.three-fourth,are
D.three-fourths,are
3.--Mum,____of the apples____gone bad.
--We’d better eat up the rest as soon as possible.
A.one third; have
B.one thirds; have
C.one third; has
D.first three; has
4.____ tigers in that forest are in danger.Now only _____ the tigers are protected.
A.Hundreds; three-fourths
B.Hundreds of; three-fourths of
C.Hundreds of; three quarters
D.Hundred of; three-quarters of
5._____of the land in that district_______covered with trees and grass.
A.Two fifths;is
B.Two fifth;are
C.Two fifth;is
D.Two fifths;are
6.The number of the students_____ in our class about
sixty-five and _____ of them are girls.
A.is; three fifths
B.are; three fifths
C.are; three fifth
D.is; three fifth
7.There are _____ doctors in this hospitalof them are women doctors.
A.two hundred; two fifth
B.two hundreds; two fifth
C.two hundred; two fifths
D.two hundreds; two fifths
8.______ of the land in that area ______ covered with golden yellow flowers at this time of year.
A.Three fifths,is
B.Three fifth,is
C.Three fifth,are
D.Three fifths,are
9.Nowadays_____ of business letters are written in
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 数词 使用 语法 教案