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1、a hat How much is this white hat?-Its 4 dollars.Whats this?What color is it?$4a white hatHelenHow much are these red socks?-Theyre 2 dollars.$ 2What color are they?Whatre these?socksred socksHelen one two three four five six seven eight ninezero/o0 1 2 3 45 6 7 8 9eleventwelveten7+10=17fourteensixte

2、enseventeennineteenfourteen+6+10=164+10=149+10=195+10=158+10=18fivesixseveneightnine+teenteenteenteenteenfiveteeneightteen3+10=13three+teenthreeteenFind the rules找規(guī)律找規(guī)律thirfifeightwentytwen+tythirtythirtytwenty-onetwenty-twothirty-one+2122312030How about 40,50,60,70,80,90?1: 1-12: (記住每個單詞記住每個單詞) 2:

3、13-19: -teen (thir-, fif-, eigh-)3: 20-90: -ty (twen-, thir-, for-, fif-, eigh-)4: 21-31: 十位_個位Summary 小結(jié)小結(jié):1到到12要死記，要死記，13-19要加要加-teen,變形就是變形就是358，20-90后加后加-ty,23458要變要變,若是十位個位都要讀，若是十位個位都要讀，先讀十位再個位先讀十位再個位，中間一橫不要忘。，中間一橫不要忘。Whats this?Congratulations1, 2, , 4, 5, 7, 8, .31 I am happy. 逢逢3的倍數(shù)，說的倍數(shù)，說“I

4、 am happy.”1a Listen and repeat. B 1a.mp310 11 12 13 14 15 16 17 18 19 2021 22 23 24 25 26 27 28 29 30 311b1bListen and circle the numbers you hear in 1a.hatPairwork(分組問答物品價格分組問答物品價格)A: How much is/are the black/white ?B: Its/Theyre .T-shirt$14$30$28$15trouserssweaterA: Can I help you? B: Yes, pleas

5、e. I want a hat.A: What color do you want?B: Black.A: Here you are.B: How much is it?A: 15 dollars.B: Ill take it. Thanks.A: Youre welcome.Groupwork15 dollars31 dollars25 dollarsCan you solve these problems? 你們會做下列問題嗎你們會做下列問題嗎?eight +nine = _. three + twelve = _. sixteen + thirteen = _. thirty fourt

6、een = _ twenty-six eighteen = _.seventeenfifteentwenty-ninesixteeneight14個西紅柿個西紅柿27件襯衫件襯衫35只紅襪子只紅襪子63個學(xué)生個學(xué)生fourteen tomatoestwenty-seven shirtsthirty-five red socks.sixty-three studentsTranslate and write them down.1. - 這雙紅色的襪子多少錢？這雙紅色的襪子多少錢？ - 12美元。美元。2. - 那件毛衣多少錢？那件毛衣多少錢？ - 26美元。美元。- How much are the red socks?- Theyre twelve dollars.- How much is that sweater?- Its twenty-six dollars.不要花錢如流水。不要花錢如流水。Thank you& Goodbye!