序数词、分数课件.ppt

Numbers 英语专项复习数词 序数词 1 序数词一般由基数词后加th构成 前面一般加定冠词the 第18第2002 以y结尾的基数词构成序数词时 先把y改成i 再加eth 第50第203 不规则的序数词有以下几个first second third fifth eighth ninth twelfth 一定要记住 theeighteenth thetwohundredth thefiftieth thetwentieth first1stsecond2ndthird3rdfourth4thfifth5thsixth6thseventh7theighth8thninth9th twelfth12th twentieth20th thirtieth30th fortieth40th fiftieth50th sixtieth60th seventieth70th eightieth80th ninetieth90th C 序数词的缩写形式 阿拉伯数字后加上th irst lstsecond 2ndthird 3rdfourth 4thtwentieth 20thtwenty third 23rdD 序数词的句法功能序数词在句中可作主语 宾语 定语和表语 ThesecondiswhatIreallyneed 作主语 Hechoosethesecond 作宾语 Wearetocarryoutthefirstplan 作定语 Sheisthesecondinourclass 作表语 4 表示第几十几时 十位用基数词 个位用序数词 十位和各位用连字符 连接第三十一第六十五第七十四第九十九第八十二 thirty first sixty fifth seventy fourth ninety ninth eighty second 5 编号的三种表示法1 名词 基数词LessonThree2 the 序数词 名词thethirdlesson3 名词 数字Lesson3如 5班ClassFive thefifthclass Class5 一般编码用名词 基数词207房三年级一班第五部分第一课3号汽车第一中学 Room207ClassoneGradethreepartfive thefifthpartlessonone thefirstlessonBusNo 3 theNo 3busNo 1MiddleSchool 四 数词的表示法 编号 1 ThisisMrWhite s visitinBeijing Hehasbeentheretwicebefore A twoB secondC threeD third2 Thereare monthsinayear Octoberisthe month A twelve tenB twelfth tenthC twelve tenthD twelfth ten3 Thereare peopleinPeter sfamily Theyliveonthe floorintallbuilding A six eighteenB six eighteenthC sixth eighteenthD sixth eighteen 4 istheeasiestofall A LessononeB TheLessononeC LessonFirstD Thefirstlesson5 Theforeignguestsstayedin lastnight A Room608B theRoom608C the608roomD 608theroom 注 通常前面要加定冠词the 但出现不定冠词a或an时 则表示 再 又 We llgooveritasecondtime 特别说明 1 世纪 年代 年份 月份时 用介词in2 某一天 星期前用介词on3 某一天早晨 下午或晚上时 用介词on 1 acoldmorning theoldmandiedlonelyinhishouse 2 Thegirlwassenttohospital themorningofMarch20 3 Mysonwasborn October2010 4 Peopleareverypoor thefifties On on in in 分数 小数 百分比 热门考点一 hundred thousand million billion的考查方法1 和 of 连用 前面不能有具体的数 而且这四个词的本身必须用复数 如hundredsof数以百计的thousandsof数以千计的millionsof数以百万计的billionsof数以十亿计的manyhundredsofstudents 好几百个学生2 当它们的前面有具体的数修饰时 其本身即不能用复数 不能和 of 连用 twothousandstudents两千名学生fivehundredcars五百辆车 1 Bytheendoflastyear wehadplantedaboutfive trees A hundredB hundredsC hundredofD hundredsof2 booksmustbeproducedforthechildren A manythousandsB manythousandsofC manythousandofD manythousand 热门考点二 其它重要表达方式的考法1 在某人多少岁in one s 几十的复数形式eg Myparentsareintheirfifties 2 afive year oldboyaneight year oldgirl3 100 meter longbridge 100米长的桥 10metersdeep 10米深 4 ten minutewalk tenminutes walk5 twomorehours anothertwohours 1 Thehaswrittena composition A three hundred wordB three hundred wordsC threehundredswordsD threehundredsword 2 Everydaytheoldwomansitsherefor A oneandhalfhourB oneandahalfhourC onehoursandahalfD oneandahalfhours 3 Hebecameveryrich A inhisfortyB inthefortiesC inhisfortiesD intheforty 4 Maryis girl A an8 year oldsB an8 year oldC an8 years oldD a8 year old A D C B 5 GuangzhouTowerisalmost A 600meterhighB 600metershighC 600 meters highD 600 meter high 6 Haveyougotenoughbooks No Ineed A tenmoreB moretenC tenanotherD otherten B A 选择填空 1 Marchis monthofayear A athreeB thethirdC athird2 Wewillhaveameetingat8 05 A fivetoeightB eightfiveC eightofive3 Eightpluseightis A sixteenB sixty fourC one4 Heisan boy