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1、語法專項訓練(五)數詞,英語數詞即表示數目多少或順序先后的詞.數詞有兩種:基數詞和序數詞.表示數量多少的叫基數詞,表示次序的叫序數詞.注意以下數詞的拼寫:,one,thefirst；two,thesecond；three,thethird；four,thefourth；five,thefifth；nine,theninth；twelve,thetwelfth；fifteen,thefifteenth；nineteen,thenineteenth；twenty,thetwentieth；twentyone,thetwentyfirst；thirty,thethirtieth；forty,thef
2、ortieth；eighty,theeightieth；ninetynine,theninetyninth；etc.,考點一基數詞1基數詞的形式基數詞中112是獨立單詞,1319的基數詞以后綴-teen結尾,2090八個整十位數數詞以后綴-ty結尾.表示其他兩位數詞,十位與個位之間用連字符“-”:,twenty-three,seventy-five,etc.百位數與十位數之間,英式英語用and連接,美式英語一般不用:threehundredandsixty-fivedays；eighthundredandtwenty-twostudents,etc.2基數詞的用法,3.基數詞的復數形式(1)表
3、示確切數字時,ten,hundred,thousand,million只用單數形式,不能加-s.(2)dozen(十二),score(二十),head(一頭)等表示確切數字時不用復數形式,但在表示不確切數字時要用復數:,twodozenbottlesofbeer；dozensoftimes；fourscoreandsixyears；scoresofstudents(3)表示“幾十”的數詞的復數形式可用來表示人的歲數或年代.Shediedinherforties.Thisstorytookplaceinthe1950s.,考點二序數詞1序數詞的形式,2.序數詞的基本用法,考點三倍數1倍數既可以表
4、示增加,也可以表示減少,分數也在此列；表示增加、減少時包括基數,相當于“乘、除”.(1)通常說“增加了X倍”,不包括基數,純增加；若是“增加到X倍”或“是原來的X倍”,則包括基數.,Themachineimprovestheworkingconditionsandraisesefficiencyfourtimes.這種機器改善了工作條件,提高了4倍的工作效率.,(2)分數的構成:基數詞序數詞；基數詞(分子)大于1時,序數詞(分母)用復數.onethird1/3,onefifth1/5,onetwentieth1/20,twofifths2/5,threesevenths3/7,fivenint
5、hs5/92倍數比較的表示法,.單句填空用括號里適當的單詞或短語完成下面的句子1Ittookusquitealongtimetogettotheamusementpark.Itwas_(athree-hours,athree-hour)journey.,athree-hour,解析:考查“不定冠詞基數詞連字符單數名詞”的用法.連字符連接的詞作定語且其中的名詞用單數.,2Itisreportedthatthefloodshaveleftabout_(twothousand,twothousands)peoplehomeless.解析:hundred,thousand,million等前面有具體的
6、數字表達具體的數量時,這些詞不用復數,后面不加of；運用復數時,后面加of則表達“概數”.,twothousand,3Several_(million,millions)peopleintheworldaresendinginformationbye-maileveryday.,million,4Hehasread_(hundred,hundreds)ofbooksinhislife.解析:hundred前面沒有具體數字,后of應用復數,表示“概數”.,hundreds,5_(Twofifth,Twofifths)ofthelandinthatdistrict_(is,are)coveredw
7、ithtreesandgrass.解析:考查分數表達.分子大于1時,分母要加s.分數表示整體的一部分,謂語用單數.,Twofifths,is,6Hedidit_(one-thirdtime,one-thirdthetime)ittookme.解析:考查倍數the名詞.,one-thirdthetime,7LouiseBrown,the_(worldstest-tubefirstbaby,worldsfirsttest-tubebaby)is70yearsoldnow.,worldsfirsttest-tubebaby,8Ihear_(quiteafew,quitealittle)boysiny
8、ourschoollikeplayingfootballintheirsparetime,thoughotherspreferbasketball.解析:根據后面的“boys”是可數名詞,few修飾可數名詞,故填quiteafew.,quiteafew,9Itisnotrareinthe_(90,90s)thatpeopleintheir_(fifty,fifties)aregoingtouniversityforfurthereducation.解析:前者指年代,用“the基數詞的復數”；后者指年齡,用“ones基數詞的復數”.,90s,fifties,10Shewenttothebooks
9、toreandbought_(dozensofbooks,dozenbooks)解析:dozen意為“一打,十二個”,與數詞連用時要用單數,與of連用時要用復數形式.dozensof意為“若干,許許多多”.,dozensofbooks,.語篇填空根據括號內的漢語提示用適當的數詞完成下面的短文.Haveyoueverseen1._(一個)chimpanzee(黑猩猩)inazoo？Ifnot,betterrunandseeone.Why？Becausetheyreindangerandtheremaysoonbenoneleft.,a/one,Chimpanzeeswereoncefoundin
10、2._(許多)Africancountries.But,lastweekaUnitedNationsreportsaidthattheyaredisappearingfromsomecountriesfast.InSenegal,forexample,many/agreatnumberof,thereareonly3._(二百)left.Thereusedtobe4._(幾千)Chimpanzeesarealsoindangerinotherpartsoftheworld.Chimpanzeesareakindofgreatape.Therearethreeotherkindsofgreata
11、pe:gorillas,twohundred,severalthousand,gibbonsandorangutans,whichareallindanger.Thereareabout5._(四十萬)greatapesintheworld.“Theyallfaceextinction,somesoon,otherswithin6._(五十五年),”,fourhundredthousand,fifty-fiveyears,saysKlausTopers,headoftheUNEnvironmentprogramme.“Over7._(百分之九十六)ofgreatapesDNAislikeour
12、s.Ifwelosethem,wewilldestroyapartofourselves,”saysKlaus.,ninety-sixpercent,Whyarechimpanzeesindangerandhowcanwesavethem？Thatsbecauseofhumans.Wearekillingthemanddestroyingtheforestswheretheylive.AccordingtotheUNreport8._(數千計的)chimpanzeesdieeachyearbecauseofhumans.,thousandsof,Somepeoplekillthemformoney.But9._(三分之二)ofthemdieafterhumanscutdowntheforestswheretheylive,whichmeansgreatapeshavenoplacetoliveandnofoodtoeat.,two-thirds,Lastweek,scientistsfrom10._(四分之三的)thecountriesoftheworldmetinParis,France,andmadeareporttellingcountrieshowtoprotectapes.,threefourths/quartersof,本部分內容講解結束,按ESC鍵退出全屏播放,
《語法專項訓練》PPT課件.ppt
