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一、基数词onetwothreefourfivesixseveneightnineteneleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteentwentythirtyfortyfiftysixtyseventyeightyninetyhundredthousandmillionbillion20~99101~999写法1，000以上的数字，从右向左数，每三位数加一个逗号，用这个方法把数字分为若干段，再一段一段的读例：4,007fourthousandandseven402,407fourhundredandtwothousand,fourhundredandseven14,002,102fourteenmillion,twothousand,onehundredandtwo基数词的句法功能作主语作宾语作表语作定语作同位语二、序数词firstsecondthirdfourthfifthsixthseventheighthninthtentheleventhtwelfththirteenthfourteenththirteenthfourteenthfifteenthsixteenthseventeentheighteenthnineteenthtwentieththirtiethfortiethfiftiethsixtiethseventietheightiethninetiethhundredththousandthmillionthbillionth缩写：1st2nd3rd31st32nd两位的数字，只需把个位数变为序数词，十位数不变。如twenty-first三位以上的数字，只把最后的两位数按照两位数的变法变为序数词onehundredandfirstonehundredandfiftieth2.序数词的句法功能作主语作宾语作表语作定语3.固定搭配：everyseconddayeveryfifthdayfirstofallatfirstthoughtatfirstsightthreequarterfivetwelfthsonehalf4.分子或分母的数目较大时，两者都用基数词，中间用over/by/outof/in连接onlyoneover/by/outof/inonehundredofthepatientsofthisdiseaseiscured5.分数修饰名词时，可用下面的两种表达方式onehalfthedistanceonehalfofthedistance小数的表达注意不使用都好小数点前的数按普通基数词的读法读，小数点后的数每一位都要单独读67.89sixtysevenpointeightnine0.3zeropointthree百分数常用%代替percentEightypercentofthepopulationvoted.数词的用法1.表达确切的数量Thenumberofcarsinourcityisincreasingbytwohundredaday.Thegovernmenthasdecidedtoincreasesalariesforallcivilservants.2.表达不确切的数量tensofhundredsoftensofhundredsofmillionsofafewhundredsof另：ascoreof二十adozen十二dozensof3.表达日期，时刻几点几分的表达如果在三十分钟以内：分钟+past/after+小时如果超过三十分钟：分钟+to/of+小时9:05five(minutes)past/afternine9:55five(minutes)to/often注意：一般情况下不采用24小时制。为了避免误解，常可用inthemorning/afternoon/evening4.表达年龄一个十岁的男孩:aboywhoisten/agedten/often在二十岁时：attheageoftwentyatagetwentyattwenty在某人几十多岁时的表达inmytwentiesinmyearlytwentiesinherlateeightiesinhismidsixties5.表达编号Room206BusNo.2066.表达比率Thechanceofthepatient’ssurvivingisonlyahundredtoone.7.表达钱数afifty-dollarbillonecent8.表达算式加and；plusSevenand/plusfouris/are/equals/makeseleven减minusTwentyminussevenequalsthirteen乘times、multipliedbyfourtimesfive/fourmultipliedbyfiveistwenty除dividedby/intothirtydividedbytwoequalsfifteenFourintothirty-twoiseight9.表达倍数两倍用twice/double三倍以上用“基数词+times”表示。（1）倍数+as。。。AsMydeskmateclaimedtohavetwiceasmanystampsasmeThiscomputercoststhreetimesasmuchasthatone(2)倍数+thesizeof。。型OurplaygroundisfivetimesthesizeoftheirsThisstreetistwice/doublethewidthofthatoneThisropeisthreetimesthelengthofthatone.(3)倍数+what从句Thevalueofthehouseisdoublewhatitwas.People’saverageincomeisalmostfivetimeswhattheyearnedtenyearsago(4)倍数+比较级+thanThisroomistwicelargerthanyours.(5)比较级+than+by+倍数程度Thelineislongerthanthatonebytwice.ThepopulationofChinaislargerthanthatoftheUSbyover6times注：分数，百分数等也可用于上面的各种表达法中，以表示相比较的对象之间的差异程度TheoldmandedicateshalfwhatheearnstotheRedCross1.Two___________diedofcoldlastwinter.A.hundredsoldpeoplesB.hundredoldpeopleC.hundredsoldpeopleD.hundredoldpeoples答：B。Hundredthousand，million，score，dozen与数词连用或与many，several等词连用时，不用复数形式。people指人们，本身是具有复数意义的词，但若指不同国家、不同民族的人时，可用复数。如：Weshoulddeepenthefriendshipbetweenthepeoplesofthetwocountries.我们应该加深两国人民之间的友谊。2.Theheroofthestoryisanartistinhis_______.A.thirtiethB.thirtyC.thirty’sD.thirties答：D。inone’stwenties(thirties,forties)在某人二(三、四……)十几岁的时候。inone’steens在某人十三至十九年龄段的时候。4.InPisa,thereis________leaningtower.A.an180-foot-highB.a180-feethighC.a180-foot-highD.an180feet-high答：C。连字符所连的词做定语时，不用复数形式。9._________cavethatGeorgehasdiscoveredinhislifetimeisneartheAlps.A.ThehundredthB.ThehundredC.HundredthD.Ahundredth答：A。第一百个，序数词前应用定冠同。11.Thechildrenoftengotoschool_____.A.bytwoandthreeB.bytwoorthreeC.bytwosandthreesD.bytwosorthrees答：C。bytwosandthrees三三两两地13.Hewillbebackin_________.A.aortwodaysB.oneortwodaysC.onedayandtwoD.oneandtwoday20．Theearthisnearly_________themoon.A.50timethesizeofB.50timesthesizeofC.50timesasbiggerasD.asbigas50times答：B。表示A是B的多少倍可以说Ais...timesthesize/length/height/weight/widthofB。或Ais...timesasbig/long/highasB。Toseeaworldinagrainofsand,一粒沙里阅世界Andaheaveninawildflower,一朵花中觅天堂Holdinfinityinthepalmofyourhand,无穷尽在掌心中Andeternityinanhour.永恒不过一刻钟*Holdfasttodreams紧紧抓住梦想，*Forifdreamsdie梦想若是消亡*Lifeisabroken-wingedbird生命就象鸟儿折了翅膀*Thatcanneverfly.再也不能飞翔*Holdfasttodreams紧紧抓住梦想，*Forwhendreamsgo梦想若是消丧*Lifeisabarrenfield生命就象贫瘠的荒野，*Frozenonlywithsnow雪覆冰封，万物不再生*《狗住旅店》*Amanwrotealettertoasmallhotelheplannedtovisitonhisvacation:Iwouldverymuchliketobringmydogwithme.Heiswell-groomedandverywellbehaved.Wouldyoubewillingtopermitmetokeephiminmyroomwithmeatnight?*Animmediatereplycamefromthehotelowner,whosaid,I'vebeenoperatingthishotelformanyyears.Inallthattime,I'veneverhadadogstealtowels,bedclothes,silverwareorpicturesoffthewalls.I'veneverhadtoevictadoginthemiddleofthenightforbeingdrunkanddisorderly.AndI'veneverhadadogrunoutonahotelbill.Yes,indeed,yourdogiswelcomeatmyhotel.And,ifyourdogwillvouchforyou,you'rewelcometostayhere,too.Successahead!Thankyou!