2 Let’s read onetwothree four fivesixseveneightnineten eleven twelve thirteen fourteenfifteen sixteenseventeeneighteennineteen teen读一读读一读, ,比较一下比较一下 teen teen teen teen teen teen13141516171819 twentyfortyfiftysixtyseventyeightyninety读一读读一读, ,比较一下比较一下thirtytytytytytytytyty a hundredone hundred twenty onethirtyfortyfiftyninetythree four fiveeight 想一想想一想, ,说一说说一说 看一看看一看, ,猜一猜猜一猜, ,它们是什么数字它们是什么数字? ? 读一读读一读, ,找规律找规律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 想一想想一想, ,说一说说一说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.…… 想一想想一想, ,说一说说一说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.…… 想一想想一想, ,下面应该是什么数字？下面应该是什么数字？one two four eight thirty-twosixteensixty-four What’s _____ and _____?It’s_______.2+3=?2+3=5twothreefive What’s _____ and _____?It’s_______.________加加__________等于等于_____?_____?等于等于_____._____.twelveeighttwenty12128 82020多少多少 12+23=?7+11=?13+30=?21+39=?40+50=?15+5=?用英语说出下列算式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。
用英语写出下列算式，并写出答案。