2Let’s read onetwothree four fivesixseveneightnineten eleven twelve thirteen fourteenfifteen sixteenseventeeneighteennineteen teen读一读 , 比较一下 teen teen teen teen teen teen13141516171819 twentyfortyfiftysixtyseventyeightyninety读一读 , 比较一下thirtytytytytytytytytya hundredone hundredtwenty onethirtyfortyfiftyninetythree four fiveeight想一想 , 说一说看一看 , 猜一猜 , 它们是什么数字 ?读一读 , 找规律1 one10 ten11 eleven2 two12 twelve20 twenty3 three13 thirteen30 thirty4 four14 fourteen40 forty5 five15 fifteen50 fifty6 six16 sixteen60 sixty7 seven17 seventeen70 seventy8 eight18 eighteen80 eighty9 nine19 nineteen90 ninety想一想 , 说一说one two hello four five hello seven eight hello 说到三的倍数 , 就不能说 , 而要用 hello 代替 .……想一想 , 说一说one two three hello five six seven hello nine ten eleven hello说到四的倍数 , 就不能说 , 而要用 hello 代替 .……想一想 , 下面应该是什么数字？one two four eight thirty-twosixteensixty-fourWhat’s _____ and _____?It’s_______.2+3=?2+3=5twothreefiveWhat’s _____ and _____?It’s_______.____ 加 _____ 等于 _____?等于 _____.twelveeighttwenty12820多少12+23=?7+11=?13+30=?21+39=?40+50=?15+5=?用英语说出下列算式12+23=?7+11=?13+30=?21+39=?40+50=?15+5=?用英语写出下列算式，并写出答案。
