高三英语数词教学案Word文档下载推荐.docx
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81eighty-one。
4.101—999的基数词先写百位数,后加and再写十位数和个位数。
691sixhundredandninety-one。
5.1000以上的基数词先写千位数,后写百位数,再加and,最后写十位数和个位数。
5893fivethousandeighthundredandninety-three。
在基数词中只有表示“百”、“千”的单位词,没有单独表示“万”、“亿”的单位词,而是用thousand(千)和million(百万)来表达,其换算关系为:
1万=10thousand;
1亿=100million;
10亿=athousandmillion=abillion。
6.多位数的读法:
1)1000以上的多位数,要使用计数间隔或逗号“,”。
即从个位起,每隔三位加一个间隔或逗号。
第一个间隔或逗号前是thousand(千),第二个间隔或逗号前是million(百万),第三个间隔或逗号前是athousandmillion或abillion(十亿)。
2)每隔三位分段以后就都成了101—999。
读的时候十位数(或个位数)的前面一般要加and。
888,000,000读作:
eighthundredandeighty-eightmillion。
基数词的用法:
1.基数词在句中的作用
基数词的作用相当于名词和形容词,在句中可作定语、主语、宾语(介宾)、表语、同位语等。
例如:
Threeandfiveiseight.3+5=8(作表语)
Howmanyorangesdoyouwant?
你要多少桔子?
Iwanteight.我要八个。
(作宾语)
Thereareeightboatsinthelake.湖里有八条小船。
(作定语)
2.Hundred,thousand,million,dozen,score这些词前面如有表示具体数字的词,它们不能加“s”,反之则须加“s”,并要与of短语连用。
threehundredpeople,fivethousandyears;
thousandsofpeople,hundredsofstudents,thousandsoftrees
•-HowmanypeoplewillcometoBeijingnextyear?
•-It’shardtosay,________people,Ithink.
•A.millionofB.millionsofC.threemillionsD.threemillionsof(2007芜湖)
(二)序数词:
表示顺序的数词为序数词,它的构成如下表:
1~19
各基数词尾加th
其中七个例外:
first,second,third,fifth,eighth,ninth,twelfth,其余,如:
four—forth,six—sixth,nineteen—nineteenth
20,30~90
把y变i后加eth
twentieth,fortieth,ninetieth
21以后多位数
最后一个数用序数词,其余用基数词
21st—twenty-first,110th—onehundredandtenth
序数词的用法
序数词表顺序,主要作定语,其前面须加上定冠词the,序数词前面加the时,表示顺序,加a/an时表示“再一、又一”。
Thethirdlessonisratherdifficult.(第三课相当难)
Shallwereadthetextathirdtime?
(我们把课文读第三遍,好吗?
)
此外,也作主语、宾语、表语和定语等,这时,被它所修饰的名词往往被省略。
Thefirst(person)toarriveisKate.
Thefirstisbiggerthanthesecond.(作主语)第一个比第二个大。
Givemethefirst.(作宾语)把第一个给我。
She’softenthefirsttogotoschool.(作表语)她经常第一个去上学。
We’regoingtolearntheeighthlesson.(作定语)我们将要学习第八课。
序数词
表示数目顺序的词用序数词,往往与定冠词the连用,当其前面有this,that,my等限定词修饰时不用the。
Thisisourfirstlesson.
(三)数词的用法:
1.英语中年月日、点钟、序数词、分数词、算式列表
示例
英语表示法
2001.6.30
June30,200130June,200130thJune,2001
7:
25
seventwenty-fivetwenty-fivepasteven
12:
54
twelvefiftyfoursixtoone
9:
15
ninefifteenaquarterpastnine
2:
30
twothirtyhalfpasttwo
21:
50
twenty-onefifty9:
50p.m.
第21
twenty-first
第123
onehundredandtwenty-third
ahalf
twoandtwo-fifths
20%
20percent20percent
第七路公共汽车
BusNumberSeven
第201房间
Room201
人民路153号
153RenminRoad
4+8=12
Fourpluseightis/makes/make/are/equal/equalstwelve
11-7=4
Elevenminussevenis/equal/makefour.
6×
5=30
Sixtimesfiveisthirty.
20÷
5=4
Twentydividedbyfiveis/makes/equalsfour.
A>B
AismorethanB.
A<B
AislessthanB.
A≈B
Aisapproximately(近似地,大约)equalstoB.
A≠B
AisnotequaltoB.
2.约数表示法列表
含义
英语表达
例句
大于某数
morethan
Hehaslivedhereformorethantwentyyears.
over
sheisoverfifty.
ormore
There'
rethirtypeopleormoreinthemeeting-room.
小于某数
lessthan
Ihavelessthan(notmorethan)fiftydollars.
under
Childrenundersevenarenotallowedtoenter.
below
Hewouldnotsellitforbelowahundredfiftydollars.
orless
Thecoatmightcosthimsixtydollarsorless.
大约(某数)
nearly
Sheisnearlyfiftynow.
almost
Itsalmostthreeo'
clock.
upto
Uptotenmencansleepinthistent.
or
Hespentfourorfivedayswritingthearticle.
orso
Thedistanceistwentymilesorso.
about
Ivisitedthatvillageaboutthreeyearsago.
some
Theirteamhassomefourorfiveplayers.
moreorless
Thecontainercanholdmoreorlesstwentypoundsofwater.
around/round
Let'
smakeitround/aroundeighto'
3.不定数量词“多”的表示法列表
被修饰名词的数
汉译
修饰可数名词
dozensof
几十、许多
scoresof
许多
many,agood(great)many,manya(饰单数可数名词)
许多、大量
hundredsof
数以百计
thousandsof,thousandsuponthousandsof
成千上万
millionsof
数百万
billionsof
亿万
修饰不可数名词
much,agreat(good)dealof,
alargeamountof,largeamountsof
修饰可数名词或不可数名词
alotof/lotsof,plentyof, alargequantityof,
largequantitiesof
•
(一)表示事物的编号
•基数词放到名词的后边,该名词一般要大写;
序数词放到名词的前面,加定冠词。
•第一课Lesson1/thefirstlesson.Row3/thethirdrow
•
(二)年、日、时刻表达方法。
•“年”用基数词,“日”用序数词,前要加定冠词。
读的顺序是月日年。
1999年5月2日读作:
Maythesecond,nineteenninety。
“时刻”用基数词表达,同时要注意以下两点。
•1.表示“整点”时,在基数词后加o’clock;
•9:
00o’clock.
•2.分钟小于或等于30分钟的,用“分钟数+past+钟点数”形式;
分钟数大于30分钟的,用“到下一个钟点所差的分钟数+to+下一个钟点数”形式,也可以依次读钟点数和分钟数。
•7:
20twentypastseven或seventwenty.
•3.注意两个特殊的表示时间的单位词:
30分钟用half,15分钟用aquarter,如:
•6:
30读作:
halfpastsix
•5:
45读作:
aquartertosix
15读作:
aquarterpastsix
分数的表达方法
•表示分数时,分子用基数,分母用序数,分子大于1,分母用复数。
分数修饰名词时,后用of短语。
•1/3onethirdofteachers3/7threeseventhsoftheboys
•1/2,1/4分别用ahalf和aquarter表示。
)“基数词-名词-形容词”结构
•“基数词-名词-形容词”只能用来放到名词前作定语。
•Sheisa3-year-oldgirl.
•Theyliveina7-storey-highbuilding.
•注:
这种结构中名词不能用复数,同时只能作定语。
用作表语时,不用连字符,名词有复数。
•Tonyis10yearsoldthisyear.
•Tonyisa10-year-oldboy.
1.Two__diedofcoldlastwinter.
A.hundredsoldpeopleB.hundredoldpeople
C.hundredsoldpeoplesD.hundredoldpeoples
2.Hewasonlyin__atthetime.
A.his20'
sB.the20'
sC.histwentiesD.thetwenties
3.Thetwogreatmenwrotethoselettersin__.
A.1870'
sB.1879sC.the1870'
sD.the1870
4.IwonderifIcanaskhim__time.
A.fourB.fourthC.thefourthD.afourth
5.Hecameout__inthetrackevents.
A.firstB.oneC.thefirstD.theone
6.Itwasin1939that__brokeout.
A.WorldWarSecondB.theWorldWarSecond C.SecondWorldWarD.WorldWarII
7.You'
llhavetospend__writingyourreporthere.
A.onedayortwodaysB.onedayortwo C.adayortwoD.twodaysorone
8.Hecutthecake__.
A.inhalvesB.inhalfC.intohalvesD.intohalf
9.Theearthisnearly__themoon.
A.50timethesizeofB.50timesthesizeofC.50timesassizeasD.50timesasthatof
10.Eitheryouortheheadmaster__theprizesforthesegiftedstudentsatthemeeting.
A.ishandinginB.aretohandout C.arehandinginD.istohandout
11.__ofthepopulationherearepeasants.
A.20percentsB.20percentC.the20percentD.the20percents
12.It'
sabout__,thethicknessofahumanhair.
A.two-fifteenthB.two-fifteenthsC.twofifteenD.twofifteens
13.Thepriceofsuchmaterialwasreduced__.
A.by18percentB.to18percentC.at18percentD.for18percent
14.Southoftheequator,81percentofthesurfaceoftheearth__water.
A.isB.areC.wasD.were
15.Theysold__boxesofsuchsweetslastweek.
A.fourdozenB.fourdozensC.fourdozensofD.fourdozenof
16.Ittookme__daystofinishdrawingabeautifulhorse.
A.ahalfdozenB.halfadozenC.haftdozensD.halfdozen
17.__peopleweresenttheretohelpfightagainsttheflood.
A.ThreescoresofB.ThreescoreofC.ThreescoreD.Threescores
18.Don'
tleaveyouwork,__.
A.donehalfB.halfdoneC.ahalfdoneD.doneahalf
19.Nobodycandotwothingswell__.
A.atonetimeB.atonceC.onetimeD.once
20.Hehas__booksinhisstudy.
A.severalthousandsB.somethousandsofC.somethousandsD.somethousandof
21.OnNationalday__peopletakepartinallkindsofcelebration.
A.hundredsofmillionsof B.millionsofhundredof
C.hundredsmillionsof D.millionshundredsof
22.Hehaslivedat__for30years.
A.No.101HepingStreet B.101HepingStreetC.HepingStreet101D.HepingstreetNo.101
23.Youcanfindhimin__.
A.Room201 B.201Room C.theRoom20 D.the201Room
24.It'
s__walkfromheretomyschool.
A.two-hours B.twohours C.two-hour D.atwo-hour
25.Itwasin__whenhewasalreadyin___thathewenttoYan'
an.
A.the1940s,the40s B.the1940s,hisfortiesC.1940'
s,hisforties D.the1940'
s,his40s
26.Hewenttothemarketandbought__eggsandsomemeat.
A.threedozenofB.threedozenC.threedozens D.threedozensof
27.Shortlyaftertheaccidenttwo___policeweresenttothespottokeeporder.
A.dozenof B.dozens C.dozen D.dozensof(MET9229)
28.MrSmith___metobuyseveral__eggsforthedinner.
A.asked,dozen B.suggested,dozensofC.had,dozen D.persuaded,dozensof('
94上海)
29.____ofthelandinthatdistrict___coveredwithtreesandgrass.
A.Twofifth,isB.Twofifth,areC.Twofifths,is D.Twofifths,are(2000上海)
30.Two___diedofcoldlastwinter.
A.hundredsoldpeople B.hundredoldpeople
C.hundredoldpeoples D.hundredoldpeoples('
88MET.15)
31.Itisnotrarein___thatpeoplein____fiftiesaregoingtouniversityforfurthereducation.
A.90s,the B.the90s,/ C.90s,their D.the90s,their('
99上海6)
32.-Haveyouseenmanysheepinthedistance?
-Yes,___.
A.thousandofthem B.twothousandsofthem
C.twothousandofthem D.twothousandthem
语法复习十六: