七年级英语（人教版）上册交互课件-【第3课时（Section B 1a-1e）】

SectionB1a-1eR·七年级上册Unit7Howmucharethesesocks?LearningobjectsBy

the

end

of

the

class,youwillbeableto…1.Learnthenumbersfrom10to31.2.Usethenumbersfreelyintherealsituation.3.Spendmoneyinawisewayandsavemoney.Let’ssingDiscussWhatnumberscanyouhearinthesong?Doyouknowhowtoexpressthenumbersfrom10to31inEnglish?1aListenandrepeat.101112131415161718192021222324252627282930311bWritethenumbersin1anexttothecorrectwords.Whichrowsofnumbersareinthewrongplaces?ten____eleven____twelve____thirteen____fourteen____twenty-five____twenty-six____twenty-seven____twenty-eight____twenty-nine____twenty____twenty-one____twenty-two____twenty-three____twenty-four____fifteen____sixteen____seventeen____eighteen____nineteen____thirty____thirty-one____10111213142526272829202122232415161917301831Putthenumbersin1bintothefollowingtable.11-1921-2910、20、30twenty-one____twenty-two____twenty-three____twenty-four____twenty-five____twenty-six____twenty-seven____twenty-eight____twenty-nine____252627282921222324eleven____twelve____thirteen____fourteen____fifteen____sixteen____seventeen____

eighteen____nineteen____131415161917181112ten____twenty____thirty____203010Whatrulescanyoufind?基数词的表达法分类表达法示例1-12拼音和读写没有什么相似之处，无规律可循One,two,three13-19在相应的个数后加-teen（13,

15,18较特殊）Thirteen,fourteen,fifteen,sixteen,seventeen,eighteen20-90整十数在相应的个数后加-ty（20,30,40,50,80较特殊）Twenty,thirty,forty,fifty,eighty1-99非整十数整十数+连字符+个位数Twenty-one,thirty-two,forty-threePlayagameStudentssaythesentence“I’mthenumber…”.Thentheteachersaysanumberrandomly.Thestudentshouldstandsupwhenhehearsthecorrespondingnumber.101112131415161718192021222324252627282930311cListenandcirclethenumbersyouhearin1a.1dListenagain.CirclethethingsinthepicturethatKateandhermomtalkabout.Check(√)

thethingKatebuys.√ListenandchooseHowmuchisthebluesweater?Fiftydollars. B.Fifteendollars.C.Twentydollars.2.Katebuys____.abluesweater B.aT-shirtC.thetrousers.Listenagainandanswer1.DoesKateliketheredsocks?

Yes,shedoes.2.Why

doesn’t

Katebuythegreensweater?

Becauseshehasagreensweater.Mom:Oh,look!Ilikethatbluesweater.Howmuchisit?Kate:Fifteendollars.Oh,Ilikethesesocks.Mom:Oh,no.Idon’tlikered.Kate:DoyoulikethisT-shirt?Mom:Mmm,yes,Ido,butit’selevendollars.Tapescripts:Kate:Oh.Howmuchisthegreensweater?Mom:It’stwentydollars.Butyouhaveagreensweater.Kate:Mmm.Mom:Oh,doyoulikethesetrousers?Kate:Oh,yes.Howmucharethey?Mom:Onlysixteendollars.Kate:OK,I’lltakethem.√1eAskandanswerquestionsaboutthethingsinthepictureabove.Howmuchisthewhitebag?It’sseventeendollars.Howmucharetheblackshoes?Theyareeighteendollars.Summary1.Keysentencepatterns:—Howmuchisit?—Fifteendollars.—Howmucharethey?—Onlysixteendollars.2.The