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1、,How much are these socks?,Unit Seven,Go for it!,Period 4,点此播放视频,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 thirty-one thirty-nine forty-one
2、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-),3. 20 - 90: -ty (twen-; thir-;
3、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,nine - nineteen - ninety,one - ten
4、- 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,1d,点此播放视频,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 that T-shirt? Mmm, yes, I do. But its
5、eleven dollars. Oh, how much is the green sweater? Its twenty dollars. But you have a green sweater. Mmm, oh, do you like those blue trousers? Oh, yes, I like those. How much are they? Only sixteen dollars. Ok, Ill take them.,$70-90,$86,Is it ?,点此播放视频,$45-60,$58,Are they ?,$40-70,$56,Are they?,$70-90,$88,Is it ?,$15,$5,$10,$20,$25,$ 10,$20,$30,$13,
