数词专项练习课件.ppt

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1、数词专项总结数词分为基数词和序数词。基数词表示“多少”，序数词表示“第几”,序数词前一般带the.(1)这座楼房有三层，我们的教室在三楼。Thisbuildinghas________floorsandourclassroomisonthe________floor.(2)Todayismygrandfather’s____________(81)birthday.(3)Inthe_____________(18)century,alotofmusicisanscametostudyandworkinVienna.(4)MissLiu

2、wasmy_________(one)Englishteacher.threethirdeighty-firsteighteenthfirst如何把基数词变为序数词？基变序，有规律，结尾加上th。一二三，特殊记，结尾字母t、d、d，八减t，九去e，f要把ve替，ty变y为ie，然后再加上th。要是遇上几十几，只变个位就可以。six-sixth,seven-seventhone-first,two-second,three-thirdeight-eighth,nine-ninthfive-fifth,twelve-twelfthtwen

3、ty-twentieth,ninety-ninetiethsixty-onesixty-firstthirty-threethirty-third数词中考要点：1.hundred,thousand,million,billion用法①与of连用时，用复数形式：millionsofpeople②前边有具体数字时，用单数形式：eightmillionpeople③severalmillionpeople2.“in+the+年代的复数形式”，表示…世纪…年代Eg:inthe1980s：在20世纪80年代(区别in1980)3.“inone’

4、s+整十的复数形式”，表示在某人…岁上Eg:PetertaughthimselfEnglishinhisforties.3.ClassTenGradeNine结构：Module1=thefirstmoduleLesson3=thethirdlessonRoom9=theninthroom4.时刻的表达：（两种表达法）①直接读出法：3:12threetwelve②加介词past或to法：3:305:1212:156:557:45halfpastthree或者threethirtytwelvepastfive或者fivetwelveaqu

5、arterpasttwelve或者twelvefifteenfivetoseven或者sixfifty-fiveaquartertoeight或者sevenforty-five29---------367---------6,582--------73,234------twenty-nine熟悉数字的表达方式:threehundredandsixty-sevenSixthousand,fivehundredandeighty-twoseventy-threethousand,twohundredandthirty-four读写规则：

6、个位、十位用“—”连，百位、十位加“and”.Howtoreadalargenumber?6,543,431,729billionmillionthousandhundredsixbillion,fivehundredandforty-threemillion,fourhundredandthirty-onethousand,sevenhundredandtwenty-nineThankyou.