天津市中考英語(yǔ)一輪復(fù)習(xí) 數(shù)詞課件.ppt

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數(shù)詞復(fù)習(xí),數(shù)詞的構(gòu)成,,基數(shù)詞序數(shù)詞,,1－12有各自獨(dú)立的形式。13-19都是相對(duì)應(yīng)3－9加上teen構(gòu)成，特殊拼寫的詞有thirteen,fifteen,eighteen。20－90都以-ty結(jié)尾，特殊拼寫的有twenty,thirty,forty,eighty。21－99,整數(shù)十位數(shù)＋各位數(shù)，中間有“－”。百位數(shù)，由百位數(shù)＋and+兩位數(shù)組成。……,,1－3分別為first,second,third。4－19都是在后面加上th,特殊的有fifth,eighth,ninth,twelfth。20－90把y變成ie然后加th,如twentieth。21－99的序數(shù)詞變后面的各位數(shù)。序數(shù)詞可以用縮寫，如1st,2nd,3rd,4th…,基本用法：,1.基數(shù)詞：表示精確數(shù)字時(shí)，hundred,thousand,million,billion后面都不用變化。但是在表示幾百，幾千等模糊概念時(shí)，這些詞后面要加上s和of,如：hundredsof,而且前面可以加上many,tensof等表示不確切的詞，注意several,some是表示確切數(shù)字的詞：severalhundred,2.數(shù)詞一般是用作復(fù)數(shù)的，但是特殊情況也有復(fù)數(shù)的用法：a.在表示一排或者一組的情況下：Theyarrivedintwosandthrees.b.表示幾十歲：theforties------41-49c.表示年代：inthe1920s,3.基數(shù)詞兼有名詞和形容詞的功能：NineofthemarefromGreece.Theyworkfortyhoursaday.,4.序數(shù)詞主要用作定語(yǔ)。一般要加the.Ourclassroomisonthethirdfloor.Thefirstpartofthestoryisnotinteresting.inthefirstplace,5.序數(shù)詞也可以用作副詞，Whendidyoufirstseehim?Whichhorsecameinfirst?,6.基數(shù)詞也能表示順序，如書刊的卷、章、節(jié)、頁(yè)的數(shù)目，住所、房間、教室、電話號(hào)碼等等。VolumeTwo,ChapterFour,SectionSix,PageEight,Room304,7.倍數(shù)的表示法a.倍數(shù)（或分?jǐn)?shù)）+as+adj.+asIhavethreetimesasmanyasyou.我有你三倍那么多。b.倍數(shù)（分?jǐn)?shù)）+thesize(amount，length…)of…Theearthis49timesthesizeofthemoon.地球是月球的49倍。c.倍數(shù)（分?jǐn)?shù)）+形容詞（副詞）比較級(jí)+than…Thegrainoutputis8percenthigherthisyearthanthatoflastyear.今年比去年糧食產(chǎn)量增加8%。d.還可以用by+倍數(shù)，表示增加多少倍Theproductionofgrainhasbeenincreasedbyfourtimesthisyear.今年糧食產(chǎn)量增加了4倍。,8.日期，時(shí)間和分?jǐn)?shù)的表示法見書本p20。,9.也可以用after和before表示時(shí)間，情況分別與past和to相當(dāng)。如：1．Itisfewminutesbeforesixoclock．現(xiàn)在是六點(diǎn)差幾分。2．Thecorrecttimeisthreeminutesafterten．準(zhǔn)確時(shí)間是十點(diǎn)三分。3．Ithappenedataquarterbeforefive．事情發(fā)生在五點(diǎn)差一刻的時(shí)候。,10.序數(shù)詞前面一般要加the,但是也有不加的情況，這個(gè)時(shí)候表示“又一，再一”的意思。Theyhadasecondchildin1988.上面的asecond可以用another代替。,Exercises:Isthereanyfoodforus____?A.tenB.tenthC.thetenthD.thetenThebikecostme________yuan.A．fivehundredfortyB．fivehundredsfourtyC．fivehundredandfortyD．fivehundredfourty“Whichlessonareyoustudyingnow?”--“________”．A.ThelessonsixB.SixthlessonC.LessonsixD.LessonsixthThehaswrittena____composition．A．three-hundred-wordB．threehundredwordsC．threehundredswordsD．threehundredswordShewasbornon________．A．1986,March9B．March9,1986C．1986,9MarchD．Marchnine,1986,A,C,C,A,B,Wehavefinishedreading____units.A．thefirsttwoB．firsttwoC．thesecondD．twofirstMytelephonenumberis____．A．eightyeighttwofortyfourzeronineB．eighteighttwodoublefourOnineC．eightyeighttwofourfourzeronineD．eighteighttwofourfourzeroandnineEverydaytheoldwomansitsherefor____.A.oneandhalfhourB.oneandahalfhourC.oneandhalfhoursD.oneandahalfhoursMrGreenWillhave____holidayverysoon.A.twomonthsB.twomonthC.atwo-monthsD.atwo-monthMaryis____girl.A.an8yearoldB.8-years-oldC.the8yearsoldD.an8-year-old,A,B,D,D,D,--Whatdayistoday?----_____.--A.June9.B.TuesdayC.Itishot.D.Itsfine.Thatmagnificent____pyramidwasbuiltbytheEgyptianpeople.A.nine-centuries-oldB.nine-centurys-oldC.ninecenturyoldD.nine-century-old--Whatsthedatetoday?----____--.A.ItsSaturdayB.ItsJulyC.ItsfineD.ItsJuly15--Whattimedoyougetupeveryday?----____--.A.ItssevenoclockB.SevenoclocktimeC.AtsevenD.Onseven,B,D,D,C,