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1、Try to cout the numbersonetwo threefour fivesix seveneight nineten eleventwelve第1页/共13页找规律two twelve three thirteen four fourteenfive fifteen six sixteenseven seventeeneight eighteennine nineteentwentythirtyfortyfiftysixtyeightyninety表示十几的数字都是以teen结尾，发/ti:n/的音。表示几十的数字都是以ty结尾，发/ti/的音。seventy第2页/共13页N
2、ew word21 twenty-one32 thirty-two43 forty-three54 fifty-four65 sixty-five76 seventy-six87 eighty-seven98 ninty-eight99 ninty-nine100 one hundred数字几十几数字几十几先写几十再写连字符，再写数字几。先写几十再写连字符，再写数字几。第3页/共13页3+5=7+8=4+14=9+11=8151820Three and five is eightSeven and eight is fifteenFour and fourteen is eighteenNin
3、e and eleven is twenty算一算算一算andis第4页/共13页New wordhomeworkrightwrong第5页/共13页背一背背一背基数词，很容易。012词各异，每个都要单独记。1319结尾teen。t-e-e-n teen.几十结尾要加ty。t-y ty t-y ty.几十几，也容易。先说几十，再说几。中间短杠“”加上去，一百就是 one hundred。第6页/共13页Practice 请用英语表达下列算式21+11=3220+23=4341+13=5456+9=6565+33=88Twenty-one and eleven is thirty-two.Twe
4、nty and twenty-three is forty-three.Forty-one and thirteen is fifty-four.Fifty-six and nine is sixty-five.Sixty-five and thirty-three is eighty-eight.andis第7页/共13页看视频回答问题1.谁做对了？谁做错了？第8页/共13页A.Lets listen and sayIs this right,Miss Li?这是对的吗,李老师？Yes,it is right.Good.是的，这是对的。很好。Thank you.谢谢。Please think
5、 again.forty-six and fifty-four is请再思考一下。46+54=.Oh!I am wrong!Its one hundred.哦！我错了。是一百。第9页/共13页知道We know the sum.Its one hundred.There are five numbers here.We know four:fifteen,twenty-three,twenty-six and twenty-seven.What is the missing number?总数数字缺少的，迷失的E.Lets Read and Write第10页/共13页Homework1.抄写本课新单词。2.背诵口诀。3.Lets Act 和Lets Read第11页/共13页Thank youThank you！第12页/共13页感谢您的观看！第13页/共13页