单数名词—名词前加a/anР复数名词Р规则变化复数Р不规则变化复数Р不可数名词量的表示?表示方法:?数词/冠词+量词+of+不可数名词?常用词有:? a piece [pi:s] of 一张/ 块/ 则? a bottle ['bɒtl] of 一瓶? a cup of 一杯? a glass of 一玻璃杯Р填空找规律РPs:数词>1,量词用复数,of后用原形?__ ____ __ paper(一张纸)?__ _____ __ water(一滴水)?___ _____ __ tea (两杯茶)?____ _____ __ bread (三片面包)РaРpieceРofРaРdropРofРtwoРcupsРofРthreeРpiecesРofРflowerРflowersР找规律РNOUN.РbookРbooksР可数名词?的复数形式РwatchРesРboxРesРbusРesРbrushРesР你发现了什么?РfactoriesРbabyРbabiesРfactoryРboysРboyР你发现了什么?Р找规律РtomatoesРpotatoesРphotosР你发现了什么?Р一般情况词尾+ s books pencilsР a. 以s, x,ch ,sh 结尾的+es? buses , boxes , watches, brushes? b. 以辅音+y结尾的,把y改成i+es? city — cities family—families? 但是元音+y结尾的,直接+s? boys , keys? c. 以f,fe 结尾的把f,fe改为v ,再加es? life —lives knife — knives? d.以有生命的 o 结尾的名词,加–es ? tomato → tomatoes ; 以无生命的o结尾的名词加s ?photo---photosР名词的复数:小结