名词,但在下列情况下可转化为可数名词:(1)表示具体的人或事。请比较:ess.(ess表示抽象概念)ess.(ess表示具体的事情)优选文档7典例(安徽名校联考,21)Onewaytounderstandthousandsofnewwordsistogain________goodknowledgeofbasicwordformation.A.不填 B.theC.a D.one解析:C。knowledge本为不可数名词,但当它被形容词修饰时,就具体化了,此时其前应加a/an,意为“对……的了解;有……方面的知识”。所以答案为C项。优选文档85)部分以-s结尾的专有名词指某一事物名称常用做单数。TheUnitedStatesismadeupof50states.TheUnitedNationshassentanofficialthere.但是,TheOlympicGamesareheldeveryfouryears.2.可数名词:个体名词(worker,pen,dogetc.)集体名词(family,group,policeetc.)运用原则:适当的冠词+[C]或[pl]形式。Ahorseisakindofanimals.Thehorseisakindofanimals.Horsesrunfasterthandonkeys.优选文档9复数名词的构成方式:名词后直接加-s。清辅音后读[s];浊辅音和元音后读[z].desksdogsapplesdays以-s,-x,-ch,-sh结尾的名词加-es[iz].buseswatchesboxesclasses以“辅音+y”结尾的名词,先把y变成i,再加上-es[iz].factoriescountriescitiesbabies以“元音+y”结尾的名词,或以y结尾的专有名词直接加-s[z].boysdaysGermans优选文档10
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