中考九年級英語語法專題研究四、數(shù)詞（基礎(chǔ)知識、例題及練習(xí)題）

專題四數(shù)詞Ⅰ.命題點1基數(shù)詞與序數(shù)詞ⅰ.基礎(chǔ)知識1.基數(shù)詞與序數(shù)詞的轉(zhuǎn)換常見一百以內(nèi)的基數(shù)詞與序數(shù)詞變化規(guī)則表：one→firsttwo→secondthree→thirdfour→fourthfive→fifthsix→sixthseven→seventheight→eighthnine→ninthten→tentheleven→eleventhtwelve→twelfththirteen→thirteenthfourteen→fourteenthfifteen→fifteenthsixteen→sixteenthseventeen→seventeentheighteen→eighteenthnineteen→nineteenthtwenty→twentieththirty→thirtiethforty→fortiethfifty→fiftiethsixty→sixtiethseventy→seventietheighty→eightiethninety→ninetieth2.基數(shù)詞的用法表示確數(shù)①“大于1的基數(shù)詞+普通不定代詞+名詞”作定語修飾名詞時，名詞用復(fù)數(shù)形式。例：twomorestudents;②基數(shù)詞+度量單位+形容詞(long/wide/deep/high...)表示計量。例：Heis1.91meterstall.他身高1.91米。③“基數(shù)詞+連字符+名詞/形容詞”作定語修飾名詞時，名詞用單數(shù)形式。例：afifteen-year-oldboy；aten-minutewalk=tenminutes’walk。表示年齡①用阿拉伯?dāng)?shù)字或基數(shù)詞表示。例：20/twentyyearsold二十歲。②attheageof+基數(shù)詞，意為“在......歲時”，后面不再加yearsold。③inone’s+整十?dāng)?shù)的復(fù)數(shù)形式，表示“在某人幾十多歲時”。3.序數(shù)詞的用法①序數(shù)詞前若有名詞所有格、形容詞性物主代詞等限定詞時，則不加the；②表示順序時，序數(shù)詞前必須加the，其后接可數(shù)名詞單數(shù)；③序數(shù)詞前面也可以加不定冠詞a或an，表示“又一，再一”，內(nèi)含順序性；④物品編號時，序號在前用序數(shù)詞，序號在后用基數(shù)詞，即“名詞+基數(shù)詞=the+序數(shù)詞+名詞”，有時可以直接用數(shù)字來表示；⑤表示在多少世紀(jì)時用序數(shù)詞，其前用介詞in?！就卣埂浚航獯鸫祟愒囶}時可按照以下方法來判斷應(yīng)填序數(shù)詞還是副詞：填序數(shù)詞①the+序數(shù)詞+名詞，例：thetwentiethcentury；②序數(shù)詞表示列舉，例：first，second，third；③名詞所有格+序數(shù)詞+名詞，例：mydaughter’seighthbirthday；④形容詞性物主代詞+序數(shù)詞+名詞，例：myfourthtry。填副詞①once/twiceaday/week/month/year②動詞+once/twice除此之外考生還需掌握基數(shù)詞變序數(shù)詞的規(guī)律。ⅱ.練習(xí)題1.--Mum,thebeautifulcardImadelastnightisjustforyourbirthday.--Oh,thankyou,mydear!A.fortyB.fourteenC.fortiethD.fourth2.Theoldladylivingonthe(five)floorsometimesdanceswithherhusbandonthesquare.3.Pleasepassmethe(six)dictionaryfromtheleftinthebookcase.4.IwenttothatgamewithmymomandJoeonmy(twelve)birthday.5.Hehasfailedtwice,buthewon’tgiveupa(three)chance.6.Itwasmyparents’(nine)weddinganniversaryyesterday.Theywerebothveryhappy.7.It’shis(two)trytodealwiththisproblem.Hehopeshecansucceed.8.It’sagoodhabittobrushourteeth(two)aday.9.Ivisitmygrandparents(one)aweek.Theyoftencookdeliciousfoodforme.Ⅱ.命題點2概數(shù)詞與分?jǐn)?shù)ⅰ.基礎(chǔ)知識考向一、概數(shù)詞1.表示確切的數(shù)字(具體數(shù)字+概數(shù)詞+名詞復(fù)數(shù))：hundred，thousand，million等詞與具體的數(shù)字one，two...或several，some，many等詞連用時，要用單數(shù)形式。例：fivehundredpeople五百人；twothousandbooks兩千本書2.表示不確切的數(shù)字(概數(shù)詞加-s+of+名詞復(fù)數(shù))：hundred，thousand，million等詞與of連用時，要用復(fù)數(shù)形式，且前面不能再加數(shù)字。例：thousandsoffactories成千上萬家工廠考向二、分?jǐn)?shù)1.分?jǐn)?shù)的構(gòu)成：分子基數(shù)詞，分母序數(shù)詞，分子大于1，分母加-s。例：2/3twothirds；5/9fiveninths；2.“分?jǐn)?shù)+of+名詞”作主語，謂語動詞的單復(fù)數(shù)應(yīng)由名詞的單復(fù)數(shù)來定。例：Twofifthsoftheworkhasbeenfinished.五分之二的工作已完成。（謂語動詞與work保持一致）Dad,aboutthreefourthsofourclassmateswearglasses.爸爸，我們班大約四分之三的同學(xué)戴眼鏡。（謂語動詞與classmates保持一致）ⅱ.練習(xí)題10.KarlMarx,agreatthinkerandpolitician,wasborninGermanytwo(hundred)yearsago.11.Nowadays,(million)offarmersleavetheirhometownstosearchforworkinthecities.12.Thereareabout(thousand)ofstudentsinourschool.13.Accordingtoasurvey,fouroutoffivewomendohouseworkathome,butonlytwo(five)ofmenwoulddoit.14.It’ssaidthattwothirdsofthewaterallovertheworld(be)polluted,sowemusttakeactiontoprotecttheenvironment.

專題四數(shù)詞1.Inhis(eighty),I.M.Pei(貝聿銘)designedSuzhouMuseumforhishometown.2.TheYangtzeRiveristhe(three)longestriverontheearth.3.Heseemstohavea(six)senseforknowingthathisbrotherwillwin.4.Wecan’tcountthestarsclearlybecausethereare(billion)ofstarsinthesky.5.The(one)steptomakingfriendsisassociatingwithpeople.Youcangotopublicplacestomeetnewpeople.6.WorldBookDaywassetupin1995,andthe(twenty-four)WorldBookDayisonApril23,2019.7.Therearesixtystudentsinourclass.Andtwo(three)ofusareboys.8.Allthefamilymembersarebusygettingreadyformyfather’s(forty)birthdayparty.9.Youcanfindmoreinformationaboutouterspaceinthe(eight)unitofSmartScience.10.Johnisthe(two)persontoaskmethesamequestion.Thefirstoneismydesk-mate.11.The(ten)dayofSeptemberisTeachers’Day.Itisa