Unit2Myschoolbag英语四上制作者：杨雷制作时间：2008年10月10+twenty-one=?thirty-one48÷two=?twenty-four5×ten=?fifty2850443728504437Lookatthepencil-case.What’sinit?Apenandapencil.Let’schantWhat’sinit?What’sinit?10s,35s.What’sinit?What’sinit?42s,8s.Myschoolbagisheavy.What’sinit?Look!___story-books,___pencils,___rulersand___pencil-cases.Wow!Good!Myschoolbagisheavy,too.What’sinit?___sharpeners,___crayons,___erasersand___picture-books.Thankyousoooooomuch.2032831042123520124210332835Bye!
