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21twenty-one20twentytwenty-onetwenty-twotwenty-threelearnthenumbers21-29twenty-sixtwenty-fourtwenty-fivelearnthenumbers21-29twenty-ninetwenty-seventwenty-eightlearnthenumbers21-2930thirty40forty90ninetytwenty2050607080fiftysixtyseventyeightytytytytytytytyty2aLook,listenandlearneighty-sevenforty-sixfifty-five465587100onehundredyuan101onehundredandoneyuan151onehundred(and)fifty-oneyuan362threehundred(and)sixty-twoyuan151onehundred(and)fifty-one362threehundred(and)sixty-two（数字记忆口诀）ninehundredthreehundredeighthundred300800900sevenhundredandeighty-twoonehundredandonefourhundredandfifty101450782巧记100以内的基数词基数词，不难记，十二以内词各异；13数到19去，后加-teen，莫忘记；20、30至90，整十之后有-ty/ti/；要说基数“几十几”，连字符号“-”别丢弃；ahundred是“一百”，请你记住别大意。基数词1011122113301440601715501618197018889045100200300222321567默写下列数字;2aLook,listenandlearn212223242526272829twenty-onetwenty-twotwenty-threetwenty-fourtwenty-fivetwenty-sixtwenty-seventwenty-eighttwenty-nine30405060708090thirtyfortyfiftysixtyseventyeightyninetyonehundred/ahundredonehundredandoneonehundred(and)eighty-fivethreehundred(and)fifteenninehundred(and)ninety-nine100101185315999（录音1）2bListenandfollowPayattentiontothestressandsyllables.（录音2）1.thirteenthirty2.fourteenforty3.fifteenfifty4.sixteensixty5.seventeenseventy6.eighteeneighty7.nineteenninetyHowmuchisthehat?￥35It’sthirty-fiveyuan.Howmuchisthehat?￥35It’sthirty-fiveyuan.Howmuchisthejacket?￥165It'sonehundredandsixty-fiveyuan.Howmuchisthedress?￥120It'sonehundredandtwentyyuan.Howmucharetheshoes?￥99They'reninety-nineyuan.Howmucharethepants?￥145They'reonehundredandforty-fiveyuan.apairofpantsHowmucharethepants?They’refourhundredandeighty-eight.￥488A:Howmuchisthiscap?B:It’stwenty-threeyuan.￥23￥648A:Howmucharetheshoes?B:They’resixhundredandforty-eightyuan.￥57A:Howmuchistheschoolbag?B:It’sfifty-sevenyuan.￥5A:Howmuchisthepen?B:It’sfiveyuan.Pairwork--Howmuchis...?--It's...yuan.--Howmuchare...?--They're...yuan.Look,listenandsay1a（影片1）Q:Howmuchisthecoat?Keypoints:1.Iwanttobuysomeclothesformydaughter.我想为我女儿买些衣服。buysth.forsb.=buysb.sth.为某人买某物如：Shewantstobuysomeflowersforme.=Shewantstobuymesomeflowers.Keypoints:2.CanItryiton?我可以试穿一下吗？tryon试穿（代词放中间,名词放两边）如：Theshoesarenice.Pleasetrythemon.tryon试穿（衣服）当宾语为名词时，可放在此短语后面，也可放在中间。但是当宾语为代词时，则必须放在这个短语中间。Eg：Theshoeslookverynice.CanI_________________？CanI________________？CanI_________________？3.Howmuchisit?多少钱？howmuchis/are…?询问价格如：Howmucharetheshoes?They’re165yuan.---Howmuch________(be)thechicken?---__________100yuan.------Howmuch________(be)theshoes?------________200yuanSalesperson:________________Mother:Yes,please.IwantaT-shirtformyson.Salesperson:______________________Mother:White.Salesperson:Whataboutthisone?Mother:Allright.______________Salesperson:Twentyyuan.Mother:OK.___________1bPairworkCan/MayIhelpyou?Whatcolordoyouwant?/What’shisfavoritecolor?/…Howmuchisit?I’lltakeit.2cListenandmatchtheprices.dressskirtT-shirtpants1.￥16.00￥60.002.￥18.00￥80.003.￥17.00￥70.004.￥15.00￥50.00（录音3）Project:Bingogame!从2a的21个数字中任意选10个填入下面表格内，老师读出数字，哪个学生填的数字先成行或成列则喊Bingo获胜！302925315402110150100999Bingo!1.Numbers:1-9992.Usefulexpressions:WhatcanIdoforyou?\MayIhelpyou?Iwant…\I’dlike…CanItryit\themon?Sure.Itlooksveryniceonyou.Howmuchisit\arethey?We’lltakeit.1.ReciteP771a2.PreviewSectionB1.Reviewthenumbers21—999.2.Recite1a.3.PreviewSectionB.Goodbye!Thankyou!