八年级英语下册Unit7Whatsthehighestmountainintheworld第三课时S

第三课时SectionA(GrammarFocus～4c)百位数的基数词，百位和十位(若无十位，则和个位)之间一般需用and连接。英语中千位数以上的阿拉伯数字，一般从个位向十位、百位等高位数，每三位数加一个逗号。第一个逗号前的数字后加thousand，第二个逗号前的数字后加million，第三个逗号前的数字后加billion。eg：15，628fifteenthousand，sixhundredandtwentyeight16，312，493，678sixteenbillion，threehundredandtwelvemillion，fourhundredandninetythreethousand，sixhundredandseventyeight大数字的表示方法【温馨提示】当hundred，thousand，million，billion前有具体数词修饰时，这些词后既不能带s，也不能带of。当hundred，thousand，million，billion等词与介词of连用时，用复数形式，表示不确定数目，其前不可与数词连用。eg：fivemillion五百万hundredsof数以百计的thousandsof数以千计的millionsof数以百万计的◆原级前可以用very，quite，rather，too，so，pretty等修饰。eg：Thestoryisveryinteresting.◆比较级前可以用much，alittle，abit，even等修饰。eg：Theshoesarealittlebiggerforme.◆比较级的特殊句型形容词和副词比较级、最高级the＋比较级，the＋比较级“越……越……”Thebusierweare，thehappierwewillbe.比较级＋and＋比较级“越来越……”Ourcountryisgettingstrongerandstronger.◆最高级的特殊句型疑问词＋be＋the＋最高级Whichisthebiggest，thesun，themoonortheearth？the＋序数词＋最高级“第几……”TheYellowRiveristhesecondlongestriverinChina.oneofthe＋最高级＋复数名词“最……之一”Shanghaiisoneofthebiggestcitiesintheworld.一、单项选择。1．Thenumber4，123isread____．A．fourthousandonehundredandtwentythreeB．fourthousandandonehundredtwentythreeC．fourthousandandahundredandtwentythreeD．fourthousandsahundredandtwentythree2．Thebridgeisover______meterslong.A．eighthundredandsixtythreeB．eighthundredsandsixtythreeC．eighthundred，sixtythreeD．eighthundred，sixtyandthreeAA3．—What'syourideaaboutfamilyeducation?—____kidslearntobeindependent，________itisfortheirfuture.(2015，曲靖)A．Theearlier，thebetterB．Themore，themoreC．Theearlier，theearlierD．Thebetter，theearlier4．InNorthAmerica，____meateatersarebearsandmountainlions.Theyeatsmalleranimalssuchasrabbitsandmice.(2015，苏州)A．smallestB．thesmallestC．largestD．thelargestAD5．MaYun，headofAlibaba，isoneof____personintheworld.(2015，重庆)A．richB．richerC．richestD．therichest6．HelikesSunday____inaweekbecauseitishishappiesttimetoplayfootball.(2015，株洲)A．betterB．wellC．best7．Lisawasstillveryweakwhenshelefthospital.Butafteraweek'srest，shefeltmuch____andwentbacktoschool.(2015，南京)A．goodB．betterC．badD．worseDCB二、用所给单词的适当形式填空。8．Aftersomeexercise，shelooksmuch__________(thin)thanbefore.(2015，宜宾)9．Thelargerlibraryyouhaveinyourhead，the_________(long)itusuallytakestofindaparticular(特定的)word.(2015，临沂)10．Shanghaiis_______(large)thananyothercityinChina.(2015，宿迁)11．TheYellowRiveristhesecond_______(long)riverinChina.12．Whichoneis___________(deep)ofallthesaltlakes?longerlargerlongestthedeepestthinner