unit7B(1a--2c).ppt

1、Unit Seven How much are these pants?,Can you count these numbers in English?,1,2,3,4,5,6,7,8,9,10,11,1 2 3 4 5 6 7 8 9 10 11 12 20 21 22 23 24 25 26 27 28 29 13 30 31 32 33 34 35 36 37 38 39 14 40 41 42 43 44 45 46 47 48 49 15 50 51 52 53 54 55 56 57 58 59 16 60 61 62 63 64 65 66 67 68 69 17 70 71 7

2、2 73 74 75 76 77 78 79 18 80 81 82 83 84 85 86 87 88 89 19 90 91 92 93 94 95 96 97 98 99 100 101,one two three four five six seven eight nine ten eleven twelve,thirteen fourteen fifteen sixteen seventeen eighteen nineteen,twenty thirty forty fifty sixty seventy eighty ninety,twenty-one twenty-nine t

3、hirty-one thirty-nine forty-one forty-nine fifty-one fifty-nine sixty-one sixty-nine seventy-one seventy-nine eighty-one eighty-nine ninety-one ninety-nine,one hundred one hundred and one,Learn these numbers and find out the rules:,基数词的记忆方法:,1. 1 - 12: (记住每个单词),2. 13 - 19: -teen (thir-; fif-; eigh-)

4、,3. 20 - 90: -ty (twen-; thir-; for-; fif-; eigh-),4. 21 - 99:,5. 100 - 900:,5. 101 - 999:,_ hundred and,_,_,个位,十位,_,个位,数字小结：,two - twelve - twenty,three - thirteen - thirty,four - fourteen - forty,five - fifteen - fifty,six - sixteen - sixty,seven - seventeen - seventy,eight - eighteen - eighty,nin

5、e - nineteen - ninety,one - ten - one hundred,11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31,Listen and repeat,1a,The 2nd and 4th row,2b,Oh, look! I like that blue sweater. How much is it? Fifteen dollars. Oh, look! I like the socks. Oh, no. I dont like red. Do you like this? Mmm, yes, I do. But its eleven dollars. Oh, how much is the green sweater? Its twenty dollars. But you have a green sweater. Mmm, oh, look at these shorts. Oh, yes, I like those. How much are they? Only sixteen dollars. Ok, Ill take those.,$70-90,$86,Is it ?,$45-60,$58,Are they ?,$40-70,$56,Are they?,$70