复数形式 ball game card baby boby family postman sheep tooth foot child mouse

复数形式 ball game card baby boby family postman sheep tooth foot child mouse post card的复数形式 ball的复数形式是什么 ball复数 单数变复数词,急,把下列名词变成复数形式：name,clock,question,answer,boy,girl,telephone,number,phone,card,family,pencil,pen,book,eraser,rulrt,case,backpack,dictionary,English,baseball,watch,computer,game,key,notebook,ring,school,sist That is an ID card.改为复数形式 He has a tennis ball（改为复数形式） This is a soccer ball.（改为复数形式）Does Peter have a ball.(作否定回答）Mike doesn‘t have a computer game.(改为肯定句）He has a computer.(改为否定句）Do you have a brother?(改为陈述句）They have many friends.(改 post card（复数） post card的复数 post card复数 a ticket-----------a ball game quilt,pen,ruler,scholl,card,notebook,daughter,picture的复数形式 quilt,pen,ruler,school,card,notebook,daughter,picture的复数形式. 5 year green card中,为何year不是复数形式?求教了! She has a basketballs and a tennis ball.（改成复数形式） don't play the ball games on the street.street能不能复数形式 has got a ball中的a能否去掉名词还是单数形式是不是如果那样就必须是复数形式ball后面加S