剑桥少儿英语二级下Unit-8-Who-is-the-first1.Mike,you___playwithfire,youmayburnyourself.A.can'tB.mustn'tC.hasn'tgotto2.You___seethedoctor,Joe.Youdon'tlookverywell.A.mustB.havetoC.can3.-MustIcleanthewindow?-No,you____.A.can'tB.mustn'tC.don'thaveto4.Jackisill,sothey___changetheirplans.A.canB.mustC.havegotto作业订正订正作业Howmanyfloorsarethere?序数词二、单元学习大家学习辛苦了，还是要坚持2．Lookandsay.Whoisthefirst,thesecondandthethird?firstWhoisthefirst？3．Let’ssingandpoint.Part4ReadandpractiseNowpleaselistenverycarefully.Pleasestandintwolines.Boysstandinalineandgirlsstandinaline.Doyouunderstand?Bequick.Nowpleaselookhere,thisisthefirst,thisisthesecondandthisisthethird.4．Readandpractise.Newwords:表示次序的数词叫序数词，是由基数词变化而来的。几个特殊变化的序数词整十的序数词把y变成i加-eth基数词序数词缩写twentytwentieth20ththirtythirtieth30thfortyfortieth40thfiftyfiftieth50th你能写出sixtyseventyeightyninety的序数词吗？基数变序数口诀：一、二、三特殊记，（first，second，third没有词尾字母t,d,d）八去t，(eight-eighth)九去e，(nine-ninth)ty变成tie，(即以ty结尾的整十数把ty变成tief来把ve替，(five-fifth,twelve-twelfth)：twenty-twentieth,thirty-thirtieth....)若是遇到几十几，几百几十几，只变个位就可以，然后再加th。注意：Whoisthefirst?5．Read,chooseandretell.6．Look,readandanswer.7．Lookandsay.Whoisthefirsttospotthedifferences?8．Pairwork.Askandanswerinpairs.9．Lookandmake.Makeasingingballoon!三、单元小结2.Sentences.