高三英语一轮数词复习课件

数词number

数词概述

表示数目或顺序的词叫数词。数词分为基数词和序数词。表示数目多少的数词叫基数词。表示顺序的数词叫序数词。数词1.基数词的构成3.基数词的用法4.序数词的用法2.序数词的构成基数词的构成1-12：独立成词one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve13-19：以teen结尾thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen一：基数词的构成20-90：（整十）以ty结尾twenty,thirty,forty,fifty,sixty,seventy,eighty,ninety21-99：两位数，中间要加连字符“-”twenty-one,twenty-two,twenty-three…ninety-nine101-999：三位数，百位与十位或个位之间加andonehundredandone…onehundredandninety-nine…ninehundredandninety-nine739,49850077,,thousand

千hundred百million百万billion十亿and

1，000以上数目,从右向左每三位用“，”分开,分别读为thousand,million,billionzxxkw-252551517707001991481,802201026，532，875如何表达顺序？基数词变序数词口诀123单独记；first，second和thirdth要从4加起；fourth，sixth有规律eight少了一个t，变为eighthnine要去掉e，然后再加-th（ninth）-ve要用f替；five变为fifth，twelve变为twelfth-ty变为-tie；twenty变为twentieth若问几十几或几百几，只变个位记心里。fourty-fifth二：序数词的构成三：基数词的用法1.基数词在句中可以做（

）

成分。ThreeofushavebeentoBeijing.ThesevengirlsarefromCanada.WefivewillgotoTokyowithher.Ilikenine.Myfavoritenumberisnine.

主，宾，表，定，同位语2.inone’s+基数词整十的复数“在某人几十多岁时”在我20几岁时3.attheageof+基数词

在某人多少岁时在5岁的时候

4.基数词+连字符+名词，组成的合成形容词作定语时，其中的名词用单数他是一个11岁的小男孩

inmytwentiesattheageoffiveHeisaeleven-year-oldboy.Therearethreethousandstudentsinourschool.Afterthewar,thousandsofpeoplebecamehomeless.6.inthe+年份s“在...年代”在20世纪80年代7.基数词+times表示次数和倍数，once一次/一倍，twice两次/两倍5次/倍8.年份用基数词表达，年代是四位数，先读前两位，再读后两位在2050年

inthe1980sfivetimesintwentyfifty9.表示长，宽，高，面积可用“基数词+单位词+adj”或者“基数词+单位词+in+n.”3米长5米高10.基数词的数学运算，plus/and（加），minus（减），times/multipliedby（乘），dividedby（除）threemeterslongfivemetersinheightTwoplusfiveisseven.Sevenminusfiveistwo.Twotimesfouriseight.Onehundreddividedbytenisequaltoten.Canyoureadthem？11:15elevenfifteen

aquarterpasteleven11:30eleventhirty

halfpast

eleven11:45elevenforty-five

aquartertotwelve11.时刻表达ateightnineseventeen或seventeenpastninetwothirty或halfpasttwofiveforty-five或aquartertosixfourteenfifteen=2.15p.m.twenty-threeOfive

整数部分按基数词读，小数部分依次读出。整数+point+小数

33.14读作thirty-threepointonefour

0.62读作（zero）pointsixtwo12.小数怎么读？牛刀小试3.0723.7020.327threepointzeroseventwothreepointsevenzerotwozeropointthreetwoseven%读作percent，基数词+percent5%读作fivepercent。12%28%13:百分数怎么读？分数1323onethirdtwothirds221/32/521/43/414.分数表示法分子用基数词，分母用序数词。分子大于1时，分母加-s。one-fourth或

a(one)quarterone-thirdtwo-fifthstwoandsix-seventhsthree-fourths

或

threequarters牛刀小试34() A.threefours B.threefourths18() A.oneeighth B.oneeight512() A.fivetwelfths B.fifthtwelfthsBAA(1)the+序数词表示“第几”；a/an+序数词表示“又一，再一”

Johnlivesonthefifteenthfloor．We‘llhavetodoitasecondtime．(2)序数词前有物主代词或其它限定词修饰时，不加定冠词the。序数词做副词时，不加theTheypaiedfortheirsecondhouseincash.First，youshouldcleanyourroom.四：序数词的用法zxxkwzxxkwthirtiesfourthsa

the

twice

Hundreds练习:语法填空

1.However,intheurbandistrictofBeijinghousesalonghutongsstilloccupyone_______(three)ofthetotalarea,providinghousingforhalfofthepopulation.2.Whattheylearnthelpedthemmake_____firstairplaneflightin1903.3.Heisthe_______(five)persontoaskmethesamequestion.4.Ihavereadthetenthchapterbutnotthe_________(twelve).5.Itwasthethirdtimethatoneofhiscars_________(go)upinflames.6.Osakaisthe________(two)largestcityinJapan.7.YuriGagarinbecamethefirstman______(fly)inspace.thirdthefifthtwelfthhadgonesecondtofly单选题_______thestudentsinourschoolisaboutonethousand,_____ofthemareboys.Anumberof;twothirdB.Thenumberof;twothirdsAnumberof;twothirdsD.Thenumberof;twothird2.Nine_____poundsaweek?Thatsoundsgood.A.hundredofB.hundredsofC.hundredsD.hundred3.Inourcity_____peoplehavemovedintotheirownhouses.thousandB.thousandsC.thousandsofD.thousandof4.Thelittleboywrotea_____lettertohisuncle.five-hundred-wordsB.five-hundred-wordFivehundredswordsD.fivehundredswordBDCBA___womanwassavedfromtheshiponJune2nd,2015.65yearold 65­year­olds

1.65-year-old65-years-old答案：C简析：年龄的表示方法，作定语时结构是“基数词-year-old”因此选C。MoreC____treeshavebeenplantednearhere,sotheairisveryfresh.Twohundreds

Hundredof

4.Hundredsof

Hundreds答案：C简析：基数词之后用hundred的单数形式，hundred的复数形式与of连用，故选C。句意是“附近已经植了数百棵树，因此空气非常新鲜。”MoreC____girlstookpartintheHappyGirlCompetitionbutonlyfewofthemsucceeded.Millionof

Manymillionof5.Onemillionof

Millionsof答案：D简析：句意为“许多女孩参加‘快乐女生’的比赛，但是仅仅很少一些人