Unit,4,Numbers and Time,Review,口算王,-How much is fifteen and five?,-Its twenty.,15+5,12+7,16+14,10+30,30+20,想一想,-How much is thirteen and twenty?,-Its _?_.,33 用英语怎么说？,10 的整数倍“几十”， 词尾都是 ty,“几十几”用英语：“几十” + 数字1-9如：33 thirty-three44 forty- four,想一想,-How much is thirteen and twenty?,-Its thirty-three.,Today lets learn more numbers.,“数字相加是多少” 掌握50以内数字的加法！,Lets learn,8点30了。我们开始吧,begin v.动词 开始,Play a game,More practice,How much is 18+3?,Its twenty-one.,Twenty-five,Twenty-six,数字接力,Twenty-seven,Listen and learn the English sounds.,数字的表达方法,小,结,23 twenty-three 36 thirty- six,
