第七講數(shù)詞【概念引入】數(shù)詞是指表示數(shù)目多少或順序先后的詞。表示數(shù)目多少的數(shù)詞叫基數(shù)詞，如one,five,ten,thirty,sixtyfive等；表示順序先后的數(shù)詞叫序數(shù)詞，如first,sixth,tenth,twentyfirst等。數(shù)詞用法相當(dāng)于名詞和形容詞，在句中可用作主語、賓語、表語、定語、同位語等。【用法講解】一、基數(shù)詞。1.基數(shù)詞的寫法或讀法。（1）對于20以內(nèi)的基本的數(shù)字，需要同學(xué)們牢記。要注意其中的一些規(guī)律。例如：1319的數(shù)字都是“teen”結(jié)尾等。（2）十位數(shù)與個位數(shù)之間要加連字符。例如：23→twentythree（3）百位數(shù)與個位數(shù)之間要加and。例如：201→twohundredandone642→sixhundredandfortytwo拓展：除此之外，較大的數(shù)字是將數(shù)字由右向左每三位加一個逗號，使一個數(shù)字分成幾個小節(jié)，第一個逗號前用thousand（千），第二個逗號前用million（百萬），第三個逗號前用billion（十億），然后依次讀出（寫出）。例如：68,343sixtyeightthousand,threehundredandfortythree13,526,300thirteenmillion,fivehundredandtwentysixthousand,threehundred注意：英語中沒有“萬”和“億”這兩個單位，只有“百萬（million）”和“十億（billion）”；因此“一萬”是用10個千，也就是“tenthousand”來表示的，“一億”是用“onehundredmillion”來表示的。2.基數(shù)詞的用法（1）表示確切數(shù)目時，hundred，thousand和million只能用單數(shù)，不能變復(fù)數(shù)；但表示不確定的數(shù)目時，要用復(fù)數(shù)形式，并且要加上of。例如：fivehundred五百threethousand三千 hundredsof成百上千的thousandsof成千上萬的 millionsof數(shù)百萬的（2）基數(shù)詞可以用來表示時間。例如：7:30seventhirty/halfpastseven6:45sixfortyfive/aquartertoseven8:00eighto’clock（3）基數(shù)詞可以用來表示年代。例如：1980年，讀作nineteeneighty2005年，讀作twothousandandfive（4）基數(shù)詞可以用來表示事物的編號。例如：第209房間→Room209第三部分→Section3/Part3南京路308號→308NanjingRoad號碼3698688→TEL3698688（5）基數(shù)詞可以用于某些數(shù)學(xué)算式。例如：3+2=5Threeandtwoisfive。（三加二等于五）105=5Tenminusfiveisfive。（十減五等于五）（6）基數(shù)詞可以用來表示年齡。例如：Sheisfiveyearsold.她五歲了。inhistwenties在他二十幾歲時二、序數(shù)詞1.基數(shù)詞變序數(shù)詞的方法。（1）序數(shù)詞是由基數(shù)詞在詞尾加－th構(gòu)成，表示順序的數(shù)詞。它的前面一般要用定冠詞the。例如：thesixth第六。（2）序數(shù)詞的1，2，3這三個數(shù)字是特殊變化，即它們不是在基數(shù)詞的后面加－th，需要特別記憶和掌握。第一是：first，第二是：second，第三是：third。（3）從第四到第十九的序數(shù)詞都是在基數(shù)詞的后面加－th，但要注意：第五是fifth，第八是eighth，第九是ninth，第十二是twelfth這幾個特殊變化。（4）以“輔音字母+y”結(jié)尾的基數(shù)詞，變?yōu)樾驍?shù)詞時，把字母y改為ie再加－th。例如：twenty－twentieth第二十，forty－fortieth第四十。（5）從二十一到九十九的序數(shù)詞（整十?dāng)?shù)除外），前面的十位數(shù)用基數(shù)詞，后面的個位數(shù)用序數(shù)詞，中間用連字符號連接。例如：twentyfour－twentyfourth第二十四。（6）第一百、第一千、第一百萬分別在相對應(yīng)的基數(shù)詞的后面直接加－th。即：hundredth，thousandth，millionth。拓展：序數(shù)詞的縮寫形式。序數(shù)詞的縮寫形式由阿拉伯?dāng)?shù)字加上序數(shù)詞的最后兩個字母構(gòu)成。前三個數(shù)字是特殊情況，分別是：first→1stsecond→2ndthird→3rd以后的均是在最后的數(shù)字后加“th”即可。例如：forth→4thtwentyfirst→21stninetyfifth→95th2.序數(shù)詞的用法。（1）序數(shù)詞的前面一般要用定冠詞the表示第幾的意思。例如：Youarethesecondonetoknowtheway.你是第二個知道方法的人。（2）表示編號的時候，經(jīng)常把基數(shù)詞放在名詞的前面表示順序，相當(dāng)于the＋序數(shù)詞＋名詞，也可以用“名詞+基數(shù)詞”。例如：LessonFive＝thefifthlesson第五課。（3）表示分?jǐn)?shù)的時候，分子用基數(shù)詞，分母用序數(shù)詞，當(dāng)分子大于1的時候，分母用復(fù)數(shù)形式。例如：2/5twofifths。（4）序數(shù)詞在名詞的前面經(jīng)常作定語修飾名詞，但是當(dāng)名詞的前面已經(jīng)有了物主代詞的時候，序數(shù)詞的前面不再用定冠詞the。例如：Thisismythirdquestion.這是我的第三個問題。（5）序數(shù)詞可以表示日期。例如：March18th,1978（1978年3月18日）注意：數(shù)詞的用法除了以上講到的基數(shù)詞和序數(shù)詞的用法之外，還有小數(shù)的用法，倍數(shù)的表達(dá)法等，我們會在以后的學(xué)習(xí)中逐漸學(xué)到。Exercises:=1\*ROMANI.詞匯。01.Morethansix_________(百)teamstookpartin2017NanjingprimaryandsecondaryschoolrobotpetitioninMay.02.Taizhouisanoldcitywithalonghistoryofmorethantwo____________(千)years.03.Thisisthe____________(第八)yearforJimGreentostayinChina.04.Everyyear,____________(百萬)ofpeopledonatemoneytoProjectHope.05.Theyarecelebratingtheirdaughter’s_______________(twentyone)birthdayintheGardenHotel.06.Myschoolisgoingtohaveanopendayonthe____________(ten)ofnextmonth.07.Excuseme,howfaristhemuseumfromhere?Only____________(third)milesaway.08.Myfatherisabusinessman.HefliestoAmerica____________(two)amonth.09.Thereare____________childrenintheroom.The____________onefromtheleftismybrother.(nine)10.Winteristhe____________(four)seasonhere.=2\*ROMANII.單選。01.Nowchildren,turntopage_____andlookatthe_____pictureinLessonTwo. A.twentieth,one B.twenty,one C.twentieth,first D.twenty,first02.Therearefourpeopleinfrontofhim,soheisthe_____one. A.five B.fifth C.first D.number03.The_____SundayinMayisMother’sDay. A.first B.second C.one D.two04.Whenisyourmother’sbirthday?It’s_____. A.Februaryeighths B.Julythirtythird C.February7th D.Marchnineth05.The_____monthofayearisApril. A.third B.forth C.fourth D.fifth06.Thegirlis_____,todayisher_____birthday. A.twelfth,twelfth B.twelve,twelfth C.twelfth,twelve D.twelve,twelve07.Whenistheschooltrip?_____March13th. A.At B.On C.In D.It’s08.Tomisamiddleschoolstudent.Howoldishe?_____. A.Thethirteen B.Thirteenth C.Thirty D.Thirteen09.Thereareusually_____daysinFebruary. A.twentyeight B.twentynine C.thirty D.thirtyone10.Sundayisthe_____dayofaweek. A.one B.two C.first D.second11.What’syournewhomelike?. A.It’snearmyschool. B.It’slargeandfortable. C.Ilivewithmyparents. D.Ilovemynewhome.12.Susanoftenlikesthewindowstheflowersinthegarden. A.tolookout,of B.lookoutof,at C.tolookoutat,at D.lookingoutof,at13.visitorsetoXishuangLakeandenjoythebeautifulvieweveryyear. A.Twohundreds B.Hundredsof C.Hundred D.Hundreds14.Iliveinaflatmyfamilythethirdfloor. A.in,in B.with,in C.with,on D.in,on15.Howdoyouread42,064?. A.fortytwothousandsixtyfour B.fortytwothousandandsixtyfour C.fortytwothousandsandsixtyfour D.fortytwothousandandsixfour=3\*ROMANIII.選詞填空。visit,see,have,chat,cook,sit,knife,have,study,country01.WaterParkisagoodplace____________fun.02.Lucy’sbrotherenjoys____________withhisfriendsontheInternet.03.MyfatheristalkingwithmyteacheraboutmyEnglishinthe____________.04.Chinaisoneofthebiggest____________intheworld.05.Jimput____________andforksonthetable.06.Ihope____________yousomeday.07.Theteacheraskedus____________lateagain.08.It’snice____________inthelivingroomandwatchTV.09.Iwillinvitesomeofmyfriends____________afilmwithme.10.Whoalways____________dinnerinyourfamily.=4\*ROMANIV.完成句子。01.你的房子確實(shí)跟我們鎮(zhèn)上這的公寓不太一樣。Yourhousetheflatshereinourtown.02.她希望終有一天擁有自己的臥室。Shehaveabedroomsomeday.03.他的夢想家園就在這個山腳下嗎？Ishisdreamhomeahill?04.一月是一年中的第一個月份。Januaryis.05.婦女節(jié)在每年的3月8日。Women’sDayisofMarcheveryyear.=5\*ROMANV.完型填空。I’mBin.IefromanicecityinChina.Ilivemyparentsinatown. liveinasmallandoldflat.Myparentsalwaystakegoodcareofmeandliveahappylife.WhenIgrowup,IhopetobuyabigformyIcallitmy0house.roomsandtwolivingrooms.Thereisakitchenafridge.Whenmyfriendsetovisitme,Ican05nicefoodforthem.inmybighouse,haveenoughtoplayThereisapoolbehindthehouse.When06es,myfriendsandIcanenjoyinit.havea07infrontoftheInthemorning,myparentscanexercisethere.Theycanalsogrowsomeflowersand08init.canenjoybeautifulflowers,andweneedtobuyvegetables.canhaveagoodrestinthegardenfeel09.Ithinkourlifebeeasyand10.Iammydreamcanetrueone()01.B.They C.Them()02.room B.classroom C.house balcony().dream B.big C.beautiful()04.to B.by C.of ().play B.carry C.do cook()06.B.C.autumn ()07.cinema B.garden C.library beach()08.rice B.grass C.vegetables trees()09.tired B.happy C.healthy()10.A.unhappy B.busy C.fortable D.difficult=6\*ROMANVI.閱讀。Nowthehousingpriceisveryhigh.Itisnoteasyformetohavemyownhouse.ButIstillwanttohaveone.Thehousemustbeverylarge.Ithasthreefloors.Thereisagarden,aswimmingpoolandagreenhouseinit.Iwouldlikemyhousetobelikeapalace,largeandbeautiful.Icanlivewithmyparentsinthehouse.MyfatherandmotherliveonthegroundfloorandIliveonthefirstfloor.Thereareatleast(至少)thirtyroomsinmyhouse.Ihavemyownbedroomandbathroom.Icanseetheprettygardenfrommybedroom.Thereisabiglivingroomonthegroundfloorandthereisalsoabighall.Myfavouriteplaceisthegarden.Icanhavealovelydoginthegarden.IcanplaywithitwhenIamfree.MyfriendsandIcanhavepartiesatmyhome.Wecanhavegreatfun.Thereareenoughbedroomsforthemtostayovernight.()01.WhichofthefollowingisNOTinthewriter’sdreamhome? A.Aswimmingpool. B.Abathroom. C.Agreenhouse. D.Areadingroom.()02.Inthedreamhousethereareover_____rooms． A.ten B.twenty C.thirty D.forty()03.Whatcanthewriterdointhegarden? A.Hecanplaywithhisdog. B.Hecanenjoytheflowers. C.Hecanholdpartieswithhisfriends. D.Hecanchatwithhisparents.()04.Whichplacedoesthewriterlikebestinhisdreamhouse? A.Thelivingroom. B.Thegarden. C.Theswimmingpool. D.Thekitchen.()05.Thewriter’sparentsandthewriterliveon _____floor(s). A.theground B.thefirst C.thesame D.different=7\*ROMANVII.作文。假如你是陳澤，你想邀請吉姆來你家做客。請根據(jù)下表中的提示給吉姆寫一封信。姓名陳澤家庭成員陳澤和他的父母住址東?？h中心，離學(xué)校約5千米。公寓位于第一層，前面有一個大花園。房間四個臥室，都有陽臺，可提供單獨(dú)臥室；兩個衛(wèi)生間，內(nèi)有淋浴；一個大客廳，有沙發(fā)和電視；共用書房看書和做作業(yè)。要求：1.包括信息中提及的所有內(nèi)容，語句通順，條理清楚。2.詞數(shù)70左右（開頭和結(jié)尾已經(jīng)給出，不計入總詞數(shù)），可適當(dāng)加以發(fā)揮。DearJim,Iamveryhappytoinviteyoutoetomyflat._____________________________________________________________________________________________________________________________________________________________________________________________________________________