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1、小学英语语法知识讲解及专项强化练习(数词与冠词)数词和冠词一、数词表示数目和顺序的词叫数词。数词又分基数词和序数词,基数词表示数量,序数词表示顺序。1.最基本的基数词如下表所示:1~1011~1920~1001one11eleven2two12twelve20twenty3three13thirteen30thirty4four14fourteen40forty5five15fifteen50fifty6six16sixteen60sixty7seven17seventeen70seventy8eight18eighteen
2、80eighty9nine19nineteen90ninety10ten100onehundred*基数词的写法:21~99的两位数,十位与个位之间用连字符“-”。例:21twenty-one32thirty-two99ninety–nine百位数:个位数基数词形式加“hundred”,表示几百,在几十几与百位间加上and。例:101ahundredandone.320threehundredandtwenty648sixhundredandforty-eight2.序数词的构成1)一般来说,是由相应的基数词加词尾th构成。
3、例,four+th---fourthsix+th---sixthseven+th---seventhten+th---tenth2)下面这些基数词在变为序数词时,有特殊的变化。例,one---firsttwo---secondthree---thirdfive---fiftheight---eighthnine---ninthtwelve---twelfth3)十位整数序数词的构成方法是将基数词的词y变成i,然后在加eth.例,twenty---twentieththirty---thirtiethforty---forti
4、ethninety---ninetieth1)两位或两位以上的基数词变为序数词时,仅将个位数变成序数词。例,twenty–one------twenty-firstthirty-five------thirty-fifthahundredandfifty-three-------ahundredandfifty-third*基数词变序数词的口诀:基变序,有规律;词尾加上th(fourth,sixth)一、二、三,单独记;结尾字母t,d,d;(first,second,third)八去t,九去e,(eighth,ninth);
5、ve要用f替;(fifth,twelfth)整十基数变序数,ty将y变成i;th前面有个e;要是遇到几十几,前用基来后用序。二、冠词冠词分不定冠词和定冠词两种。a或an是不定冠词,the是定冠词。a用在辅音音素之前,如adesk,atree;an用在元音因素之前,如anapple,anhour,anEnglishbook.*定冠词the的用法记忆口诀:特指、重提和唯一,岛屿、海峡和海湾;海洋、党派、最高级,沙漠、河流与群山;方位、顺序和乐器,年代、团体与机关;船名、建筑和组织,会议、条约与报刊;姓氏复数、国全名,记住定冠th
6、e加在前。*零冠词用法口诀:月份、星期、节假洲,呼语、头衔职务前;三餐、球类、惯用语,学科、棋类名词前。冠词和数词专项练习一、在空白处填上适当的冠词,不需要的填“/”。1)at____home2)goto_____bed3)goto_____school4)catch______badcold5)have_____goodtime6)______redapple7)_____Englishbook8)______spoon9)_____orange10)______melon11)_______eraser二、选择填空1.T
7、hereis_____“m”intheword“primary”A.anB.aC.theD./2.Thisis____orangebike.A.aB.anC.theD/3.Italwaystakesushalf_____hourtohave____longwalkaftersupper.A.a,aB,a,theC.an,aD.an,the4.Englishis____usefullanguagein____world.A.an,theB.a,theC.the,/D./,the5.Wearegoingto_____cinema
8、thisevening.A.theB./C/aD.an6.He’sstandingon_____othersideof_____river.A.a,aB.the,theC.the,aD.a,the7._____potatoisavegetable,not____fruit.A.The,an