数词使用语法教案Word下载.docx
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数词使用语法教案Word下载.docx
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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
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
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
2002年1月17日
January17(th),2002或Januaryseventeenth,2002(日和年之间需用逗号隔开)
Januarytheseventeenth,twothousandandtwo
2)日\月\年
17(th)January,2002或theseventeenthofJanuary,2002(月和年之间需用逗号隔开)
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'
____1st.Happy
Children'
Day,Kangkang!
A.April
B.May
C.June
D.July
2.--When
our
National
Day(国庆节)?
--It'
in
_________.
A.August
B.September
C.October
4.--When
father'
---It'
October23rd,2004.
A.October
twenty-third
B.twenty-third
October
C.October
twentieth-third
D.October
twenty-three
5.--What'
today?
June
______,2014.
A.the
fifteen
B.the
nineteenth
C.eighteen
6.--I
heard
grandpa
used
to
be
a
teacher.
--Yes.He
was
Chinese
teacher
______.
A.on
1950s
B.in
C.at
1950'
s
D.in
7.About
________
of
workers
factory
were
born
________.
A.two-thirds,1970
B.two-thirds,1970s
C.two-third,1970
D.two-third,1970s
8.His
father
joined
Party
in_____
and
died
in_____.
A.1930s;
his
fifty
B.1930;
fifties
C.the
1930s;
D.D.the
1930;
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。
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
9.Thehouserentisexpensive.I'
vegotabouthalfthespaceIhadathomeandI'
mpaying_______here.
A.asthreetimesmuch
B.asmuchthreetimes
C.muchasthreetimes
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。
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。
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。
3.Thesumofonehalf,onethirdandonefourthofacertainnumberis13.某数的1/2,1/3和1/4的和是13。
[例题]1.______
us
students
______.
A.Two-thirds;
1990s
B.Two-third;
C.Two-thirds;
1990
D.Two-thirds;
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。
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
class,____
boys
_____
football.
A.two
third;
likes
B.two
thirds;
like
C.two
2.About
threeof_____
housework_____usually
done
by
my
mother
family.
A.fifths;
are
B.fifth;
is
C.fifth;
D.fifths;
3.____
city
covered
with
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。
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。
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。
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。
1.--Jack,____of
oranges_____gone
bad.
--We’d
better
eat
up
rest
as
soon
possible.
A.one
fifth;
have
B.one
has
C.one
fifths;
D.first
five;
2.About____
earth_____covered
waterbut
we
have
less
lessavailable
fresh
water.
A.three-fourth,is
B.three-fourths,is
C.three-fourth,are
D.three-fourths,are
3.--Mum,____of
apples____gone
have
has
three;
4.____
tigers
that
forest
danger.Now
only
protected.
A.Hundreds;
three-fourths
B.Hundreds
of;
three-fourths
of
C.Hundreds
three
quarters
D.Hundred
three-quarters
5._____of
land
district_______covered
trees
grass.
A.Two
is
B.Two
are
C.Two
D.Two
6.The
number
students_____
class
about
sixty-five
them
girls.
A.is;
fifths
B.are;
fifths
C.are;
fifth
D.is;
fifth
7.There
doctors
this
hospitalof
women
doctors.
hundred;
two
hundreds;
D.two
8.______
area
______
golden
yellow
flowers
at
time
year.
A.Three
fifths,is
B.Three
fifth,is
C.Three
fifth,are
D.Three
fifths,are
9.Nowadays_____
business
letters
written
in
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