英语语法---名词可数名词和不可数名词什么是不可数名词？1）物质名词glass,tea2）抽象名词beauty,youth3)科学名称physics,maths练习：找出不可数名词boottearknowledgemoneywoodchickenmusichomeworkbreadblooddressnewsmilkdustman2．不可数名词变成可数名词1）词义发生改变time—timeswork---workswood—woodssand—sandscloth—clothesglass—glasses2)加量词aglassofwater,twopiecesofpaper练习；填入恰当的量词a________________ofgoodnews(条)a________________oftrousers(条)a________________ofadvice(条)a________________ofcoffee(杯)a________________ofoil(滴)a________________oftime(段)a________________ofmatches(盒)a________________ofglasses(副)a________________ofchocolate(条)a________________ofink(瓶)a________________oftea(壶)two______________offish(盘)three______________ofrice(袋)four______________offurniture(件)five_______________ofsugar(磅)six________________ofclothes(套)3．可数名词的复数构成规则变化构成法例词一般情况在词尾加______desk------deskspicture-----pictures以_______________结尾加______bus------busesbox-----boxesbrush------brusheswatch------watches以辅音+______结尾，变____为_____加_________baby------babiesfamily-----familiescountry---countries以辅音+_____结尾加______tomoto-----tomatoespotato----potatoesNegro---Negroesvolcano----volcanoes黑人英雄爱在火山上吃土豆西红柿以元音+_____结尾加______radio-----radiosphoto----photos以____或____结尾，变___/____为____,加_____life----livesleaf-----leaveshalf---halves为了自己活命，小偷和他的妻子拿着刀子和一片树叶站在架子上，把狼劈成两半。练习：写出下列名词的复数形式。1）shoe2)orange3)eye4)month5)fox6)match7)city8)class9)family10)country11)boy12)key13)leaf14)thief15)hero16)photo不规则变化单复同形deersheepfishChineseJapanesemeans只有复数形式peoplepolicecattleclothestrousers,glasses不规则变化man----menwoman----womenfoot-----feettooth-----teethmouse------micechild-----childrenGerman------Germans复合名词的复数将后一部分变成复数Englishman---Englishmengentleman---gentlemenpolicewoman----policewomengrown-up----grown-ups将主要成分变成复数looker-on----lookers-onson-in-law----sons-in-law如果前一词是man,woman，将两部分都变成复数mendoctorswomensingers练习：roof________womandriver________________step-mother_______________sheep_____________Japanese__________________sister-in-law__________________名词所有格（表示所属、类别、动作的执行者