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初中英语语法专题数词【中考考点】（1）数词的构成。（2）数词的表达方式和用法。考点一数词的构成1.基数词的构成（1）0—12单独记。如:zero,one,two,three。（2）13—19的词尾都是-teen。如:fourteen,seventeen等,但13—thirteen,15—fifteen,18—eighteen需要特殊记忆。（3）20以上的整十的基数词均以-ty结尾。如:20—twenty,30—thirty,40—forty,50—fifty,80—eighty。（4）“几十几”要在整十数词后加个位数词,并在中间加连字符号“-”。如:48—forty-eight,97—ninety-seven。（5）“几百几十”或者“几百几十几”在“百”后加and。如:156—onehundredandfifty-six,509—fivehundredandnine。（6）四位数或者四位数以上的基数词的拼写规律:从右往左每三位加一个逗号,第一个逗号读作thousand（千）,第二个逗号读作million（百万）,第三个逗号读作billion（十亿）,hundred后莫忘“and”。如:3,610—threethousandsixhundredandten;94,295—ninety-fourthousandtwohundredandninety-five;274,350—twohundredandseventy-fourthousandthreehundredandfifty。2.序数词的构成构成说明例词规则变化大多数序数词由“基数词+-th”构成four—fourth以y结尾的整十基数词变序数词,要变y为ie,再加-ththirty—thirtiethfifty—fiftieth20以上的非整十基数词变序数词,要将末位数改成序数词,其他位数仍用基数词thirty-one—thirty-first不规则变化少数序数词的构成属于特殊情况,需要特殊记忆one—firsttwo—secondthree—thirdfive—fiftheight—eighthnine—ninthtwelve—twelfth【巧学妙记】基变序,有规律;一、二、三特殊记;从四开始加-th,八去t,九去e;五和十二变ve为f再加-th;整十变y为ie再加-th;若想表示第几十几,只变个位就可以。考点二数词的表达方式March12,20192019年3月12日onethird三分之一twothirds三分之二five（o’clock）5点钟fivepastseven7点5分twentytoeight7点40分thetallerofthetwo两个中较高的那个Page62/thesixty-secondpage第62页inthe1970s在20世纪70年代inhisforties在他四十多岁时考点三数词的注意事项1.hundred,thousand,million,billion,dozen,score前有基数词修饰时,表示确数,其后不加-s,也不与of连用;表示概数时,词尾加-s,并与of连用。Therearetwohundredpeopleinthehall.大厅里有200人。Millionsofpeopleintheworldaresendingandreceivingemailseveryday.每天,世界上有数百万人在收发电子邮件。2.序数词前加不定冠词a,表示“再一,又一”。I’llhavetodoitasecondtime.我得再做一次。（已经做过一次了）3.以下复合形容词中的名词要用单数形式。（1）基数词-名词（单数）two-hourdrive两小时的车程（2）基数词-名词（单数）-形容词an8-year-oldboy一个8岁的男孩a50-metre-deephole一个50米深的洞4.every与数词连用,表示时间的间隔。“every+基数词+可数名词复数”相当于“every+序数词+可数名词单数”。Hecomestoseehisuncleeverythreeweeks/everythirdweek.他每三周/每隔两周来看望他的叔叔。考点过关训练Ⅰ.单项选择1.[2018·菏泽改编]TibetreceivesforeignvisitorsfromJanuarytoAprileachyear.A.thousandofB.thousandsofC.severalthousandsD.twothousands2.Kobe’sfanswatchedhisfinalmatchandofthemweremen.A.Threemillions;thirdfourB.Millionsof;threefourthsC.Millionof;threefourthsD.Threemillion;thirdfours3.—Howoldisyourdaughter?—.WehadaspecialpartyforherbirthdaylastSunday.A.Nine;nineB.Nine;ninthC.Ninth;nineD.Ninth;ninthBBB考点过关训练4.Eachofushastowriteareporteveryweek.A.two-hundred-wordB.two-hundreds-wordC.two-hundreds-wordsD.two-hundred-words5.Morethanchildrentookpartinactivitieslastweek.A.twothirdsB.thirdssecondC.secondthreeD.twothird6.[2018·湘西改编]—Excuseme,Mary.Canyouread“198”inEnglish?—Yes,ofcourse..A.Onehundredninety-eightB.OnehundrednineeightC.Onehundredandninety-eightD.OnehundredninetyandeightAAC考点过关训练7.[2018·天水]—Howdoyousay“1:57”inEnglish?—It’s.A.threepasttwoB.fifty-sevenpastoneC.threetooneD.threetotwo8.[2018·河池]Thereareaboutthreestudentsinourschool.A.thousandsB.thousandsofC.thousandD.thousandof7.D时刻的间接表达法:当分钟数小于30的时候,用“原分钟数+past+原小时数”,意为“几点过几分”;当分钟数大于30时,用“(60-原分钟数)+to+(原小时数+1)”,意为“差几分钟到下一个钟点”。这里表示“一点五十七”,故用“threetotwo”。故选D。DC8.C当thousand前有具体的数字three等时,表示确数,thousand后不加-s,其后也不用of;当thousand前没有具体数字three等时,表示约数,thousand后既加-s,也要加of。故选C。考点过关训练Ⅱ.用括号内所给单词的适当形式填空9.Theyliveonthe（five）floor.10.Decemberisthe（twelve）monthofayear.11.Onmysister’s（nine）birthday,Igaveherausefulbook.12.（hundred）ofpeoplecomeheretoreadbooksonweekends.13.Three（four）ofthestudentsinourclasslikebasketball.14.Ourteamwonthe（two）prizeinthecompetition.15.Father’sDayisonthe（three）SundayofJune.16.Inthe（eight）picture,youcanseemanyyoungtrees.17.[2017·淮安]Petergotamodelshipfromhisuncleonhis（ten）birthday.18.Theladybecameveryfamousinher（forty）.fifthtwelfthninthHundredsfourthssecondthirdeighthtenthforties