数词用法及课后练习.doc

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1、数词专项第一部分：知识点分析一、基数词1）基数词读法：年，月，日，时刻的读法，如2007年六月十三日读作：June(the)thirteenth,twothousandandseven（主要体现在口语考试和听力题目中）2）表示一个具体数字时，hundred,thousand,million,billion一律不用复数；在表示一个不确定数字时则用复数。例如：Therearethreethousandstudentsinourschool.Afterthewar,thousandsofpeoplebecamehomeless.3）

2、在一些表示"一排"或"一组"的词组里；如：Theyarrivedintwosandthrees.　他们三三两两的到达了。4）表示"几十岁"，例如：Hediedstillinhisforties．5）表示"年代"，用in+the+数词复数；二、序数词1）序数词主要用作定语，前面要加定冠词，例如：Thefirsttruckiscarryingafootbaskets．2）序数词有时前面可加不定冠词来表示“再一”，“又一”这样的意思，例如：We'llhavetodoitasecondtime．3)注意较为容易拼写错误的序数词及其缩写

3、形式：one---first,two---second,three---third,five---fifth,eight---eighth,nine---ninth,twelve---twelfth。缩写形式：first→1st         second→2ndthird→3rd           fourth→4thtwenty-second→22nd4)表示分数时，分子用基数词表示，分母用序数词表示。分子大于1时，分母加-s。例如：threefourths,onesecond,twofifths三．倍数表示法主语+谓

4、语+倍数（或分数）+as+adj.+aseg:Ihavethreetimesasmanyasyou.　我有你三倍那么多。主语+谓语+倍数+比较级+than+被比对象eg:Theroomistheretimeslargerthanthatone.主语+谓语+倍数+the+n(size,length,height,width)+被比对象eg:Theroadistwicethewidthofthatone.第二部分：强化练习一、单项选择1．---Howmanyworkersarethereinyourfactory?---There

5、aretwo__________.A.hundredsB.hundredC.hundredofD.hundredsof2．About________studentsinourclasscandescribethatplaceinEnglish.A.three-fifthsB.three-fifthC.third-fiveD.third-fifths3．_______ChinesearelookingforwaystolearnEnglishwellbeforeBeijing2008Olympics.A.ThousandB.Th

6、ousandsC.ThousandofD.Thousandsof4．MrZhangteachesatMiddleSchool.A.aNo.5B.No.5C.theNo.5thD.5thNo5．Johnlivesonfloor.4A.twentyB.twentiethC.thetwentiethD.thetwentyth6.Hehasworkedonthefarmforyears.A.twoandhalfB.twoandahalfC.ahalfandtwoD.twohalvesanda7．XiaoMaoandDaMa

7、oarein.A.teamFourthB.theteamFourC.TeamFourD.Fourteam8．Sorry,hadbeensoldout.A.42sizeB.Size42C.the42sizeD.thesize429.Wewillhavea_________holidayaftertheexam.A.twomonthB.two-monthC.twomonth’sD.two-months10._______treesarecutdownintheforestseveryyear.A.ThousandB.Th

8、ousandsC.ThousandofD.Thousandsof11.Oursportsmeetingwillbeheld________.A.on24,Tuesday,AprilB.inApril24,TuesdayC.onTuesday,April24D.inAprilT