序数词的用法PPT课件

1、-,1,Unit5Dates,-,2,months,JanuaryJulyFebruaryAugustMarchSeptemberAprilOctoberMayNovemberJuneDecember,-,3,AprilJuneSeptemberNovember,JanuaryMarchMayJulyAugustOctoberDecember,February,-,4,Filltheblank,ChildrensDayisin_ChristmasDayisin_TeachersDayisin_Summerholidayisin_and_,June,December,September,July

2、,August,-,5,基数词变序数词加th,1、2、3要死记，9去e，8减t,f来把ve替，y要变ie,几十几只变个位就可以。,-,6,基变序，有规律：1、2、3特殊例，结尾各是t,d,d;th,4加起，8加h,9去e;y结尾改ie,ve要用f替，再加th莫迟疑；若是遇到几十几，只变个位就可以。,-,7,表示次序的数词叫序数词，是由基数词变化而来的。,1one-first2two-second3three-third,-,8,four-fourthfive-fifthsix-sixthseven-seventheight-eighthnine-ninth,ten-tentheleven-el

3、eventhtwelve-twelfththirteen-thirteenthfourteen-fourteenthfifteen-fifteenth,序数词是由基数词后加-th变化而来。,-,9,几个特殊变化的序数词,1five-fifth2twelve-twelfth3eight-eighth4nine-ninth,基变序有规律，词尾加上th，特殊例子特殊记,-,10,整十的序数词把y变成i加-eth,1twenty-twentieth2thirty-thirtieth3forty-fortieth4fifty-fiftieth,你能写出sixtyseventyeightyninety的序

4、数词吗？,整十的序数词,-,11,你对了吗？,1.Sixty-sixtieth2.seventy-seventieth3.eighty-eightieth4,ninety-ninetieth,-,12,几十几的序数词，十位数不变，个位数变成序数词。,1.twenty-one21-twenty-first21st2.twenty-two22-twenty-second22nd,请写出232431的序数词。,-,13,基数词和序数词,基数词：表示数量的词。序数词：表示顺序的词。在表示：年月日是，年用基数词。如：1976年4月1日。写成：April1st,1976.读作：Aprilthefirst,

5、nineteenseventy-six,-,14,读分数时，分子用基数词，分母用序数词，除了分子是1的情况下外，分母用单数，其他情况下，分母都用复数形式。书写时要加连词号。如：1/3读作：one-third,2/3读作：two-thirds52/3读作：fiveandtwo-thirds,-,15,th发音规则,在th后以字母er或ern结尾的单词中，或者最后一个是不发音的e时，th发浊辅音，如：mother,father,brother,weather.Leather,further,southern,northern,either,bathe,breathe.一般情况下，th字母在代词，冠

6、词，介词，连词中读浊辅音This,that,these,those,they,them,their,the,than,then,.,-,16,th在数词(基数词和序数词）中读清辅音如：three,third,fourth大部分位于词首读清辅音thank,thin,thing,thirsty,Thursday.以th结尾的单词，发清辅音bath,both,tooth在复合词中,th读音与原词中的读音相同如Something,anything,nothing,-,17,thefirstdayofJanuary-January1st-(Januarythefirst),theseconddayofJ

7、anuary-January2nd-(Januarythesecond),thetwenty-firstdayofJanuary-,January21st-(Januarythetwenty-first),thefifthdayofJanuary-,January5th-(Januarythefifth),theeleventhdayofJanuary-,January11th-(Maytheeleventh),-,18,-,19,日期的表达date,Whatsthedatetoday?,Its_,October13th.,-,20,WhenisTeachersDay?,ItsonSept.10th.,-,21,WhenisChildrensDay?,ItsonJune1st.,-,22,WhenisChristmasDay?,ItsonDecember25th,-,23,HisbirthdayisonJuly13th,(1983.7.13),Liuxiang,Whenishisbirthday?,-,24,（1980.9.12),Whenishisbirthday?,HisbirthdayisonSeptember12th.,YaoMing,-