Unit7SectionB（1a-1e）课件人教版七年级英语上册

Howmucharethesesocks?SectionB1a-1e—Howmuchisthis…?—It’s…dollars.—It’s$3.—It’s$7.—Pleasedown.—It’s$4.—Youaregreat.—Pleaseup.Youonlyhave3guesses.($2-$8)GuessthepriceLet'sguess($20-$25)($15-$20)($10-$15)—Howmuchisthis…?—It’s…dollars.$18—Howmucharethese…?—They’re…dollars.$23$2$14($1-$5)$11($7-$12)10111213141516171819teneleventwelve-teen20212223242526272829-tytwenty-onetwenty-two...303132...-tythirty-onethirty-two......onetwothreefourfivesixseveneightnineten

eleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteentwentythirtyfortyfiftysixtyseventyeightyninetytwenty-one…twenty-ninethirty-one…thirty-nineforty-one…forty-ninefifty-one…fifty-ninesixty-one…sixty-nineseventy-one…seventy-nineeighty-one…eighty-nineninety-one…ninety-ninehundredLearnthesenumbersandfindouttherules:掌握基数词的拼写。ReviewTrytomakeconversationsaccordingtothepictures.Howmuchisthis…?It’s…dollars.Howmucharethese…?They’re…dollars.$22$12$11$20$14$18$6$16NumberGame1$38--$43$40$27$23--$30$10--$17$13$91$86--$94NumberGame23811eightsevenfifteenfifteenfivetwenty34628thirty-onesixtwenty-fivetwenty-twofoureighteen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-threeDiscussion讨论:基数词的构成规律(1)0～12这十三个数字要单独记忆。(2)13～19都是以“个位数字＋

”构成，并且重音都在

____

上。同时我们还要注意thirteen（13）,fifteen（15）,eighteen（18）这三个数字的拼写。

(3)20，30……90都是以“个位数字＋

”构成，但应注意

（20），

（30），

（40）______

（50），

(80）这几个数字的特殊性。4）20以上两位数的基数词，十位数与个位数之间用符号“

”连接。如：thirty-two（32），forty-four（44），fifty-five（55）等。teenteentytwentythirtyfortyfiftyeighty-1a.Listenandrepeat.

听录音并跟读。101112131415161718192021222324252627282930311b.Writethenumbersin1anexttothecorrectwords.Whichrowsofnumbersareinthewrongplaces.

将1a中的数字写在对应的单词后。哪几行数字的顺序不对？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_______17181930312415162021222326272829131425101112➕and/plus➖minus✖timesFiveandsixis

.

Eightplusnineis

.

Eightplus

sevenis

.Twenty-threetimestwois

.elevenseventeenfifteenfourty-sixWorkinpairs.Howmuchisthe______?It’s__________.$15jacket15dollarsHowmucharethe______?They’re__________.$29shoes29dollars1c.Listenandcirclethenumbersyouhearin1a.

听录音，在1a中圈出所听到的数字。101112131415161718192021222324252627282930311.Howmany(多少)numbersdoyouhear?Whatarethey?(小组竞赛：你能做出这些数学题吗?)1.Oneandtwois________.2.Elevenandtwenty-fouris_________.3.Forty-fiveplusfiveis_______.4.Eightminusthreeis_______.threethirty-fivefiftyfiveCanyoudealwiththesemathproblems?5.Sixty-twominustenis__________.6.Multiplyfivebynineis__________.7.Eightdivided

bytwois___________.fifty-twoforty-fivefour计算：

加and/plus减minus

乘multiply…by…除…divideby…1d.Listenagain.CirclethethingsinthepicturethatKateandhermomtalkabout.CheckthethingsKatebuys.

再听一遍录音，在图中圈出凯特和妈妈谈到的物品，在凯特购买的物品上打钩。

Theytalkaboutthe,,,,and.AndKatebuys

.

.bluesweatertheredsockstheT-shirtthegreensweaterthetrousersthetrousersMom:Oh,look!Ilikethatbluesweater.Howmuchisit?Kate:Fifteendollars.Oh,Ilikethesesocks.Mom:Oh,no.Idon’tlikered.Kate:DoyoulikethisT-shirt?Mom:Mmm,yes.Ido,butit’selevendollars.Kate:Oh.Howmuchisthegreensweater?Mom:It’stwentydollars.Butyouhaveagreensweater.Kate:Mmm.Mom:Oh,doyoulikethesetrousers?Kate:Oh,yes.Howmucharethey?Mom:

Onlysixteendollars.Kate:OK,I'lltakethem.ListenandrepeatMomdoesn'tlikethecolorofred.TheT-shirtistooexpensive.Youalready(已经)haveoneandyoudon'tneedit.Thetrousersareatagood(实惠的)price!1e.

Askandanswerquestionsaboutthethingsin1b.Howmuchisthewhitebag?It’sseventeendollars.Howmucharethebluetrousers?Theyare16dollars.Summaryten,eleven,twelve,thirteen,fifteen,eighteen,twenty,thirty—Howmuchisthegreensweater?—It’stwentydollars.

基数词的构成和用法—Howmucharethey?—(They’re)Onlysixteendollars.SentencesGrammarKeywords$11$15$20$30$21$19Howmuchis/arethe/this/that...?It's/Theyare...dollars.PairWorkCanIhelpyou?/WhatcanIdoforyou?Yes,please.Iwant/need...

Whatcolordoyouwant?

Idon'tlikethecolor.Doyouhaveagreen/red...one?Howmuchis/are...?

Howabout...yuan?

I'lltakeit/them.

Excuseme.

Doyouneed/want...?

It's/They're...yuan.

Hereyouare.

$11$15$20$30$21$19$19Howmuchisthisbag?Twen