1 .一些特殊词的变化:this-----these that-----those he/she/it----they is----are2 .一般性的可数名词变复数时直接加“s”。bird----birds pear----pears flower----flowers room-----rooms brother---brothers sister----sisters3 不可数名词的单复数形式一样。milk----milk juice----juice bread----bread rice----rice water -----water honey----honey4, 以元音字母结尾的名词变复数时加“es”tomato---tomatoes potato----potatoes5, 有些成双成对的单词常以复数形式出现.hands(手) eyes(眼睛) gloves(手套) shoots(靴子) trousers(裤子 ) ears( 耳 朵 ) tooth--teeth( 牙 齿 ) legs( 腿 ) foots(脚)chopsticks(筷子) socks(袜子)等6. 以“y”结尾的名词多变“y”为“i”再加“es”但“y”前是元音字母的不需作此变化.butterfly----butterflies family---families 但 boy---boys toy----toys monkey----monkeys key----keys day----days7, 单词中含有名词“man”的要变“man”中的“a”为“e”postman----postmen fireman---firemen milkman----milkmen fisherman---fishermen man---menwoman---women policeman---policemen 等.8 以“ch ” “sh” “x” “s”结尾的名词变复数时加“es” peach—peaches pencil-box---pencil-boxes class-classesbox-boxes watch-watches dish-dishes10, 以 “f”或“fe”结尾的名词变复数时要去掉“f”或“fe”再加“ves” leaf----leaves knife----knives thief-thieves loaf-loaves wife-wives11 单词本身以元音字母“e”结尾的直接加“s”orange----oranges pie---pies cake---cakes bee---bees uncle----uncles13,以元音字母开头的名词单数表达时前不是“a”而是"“an”an orange an egg anapple an elephont an ice--cream 3 以-f 或-fe 结尾的词变-f 和-fe 为 v 再加-esleaf-leaves, thief-thieves, knife-knives, loaf-loaves, wife-wives加-sbelief-beliefs, chief-chiefs, proof-proofs, roof-roofs, gulf-gulfs4 以辅音字母加 y 结尾的名词,变 y 为 i 加-esparty-parties, family-families, story-stories, city-citiespiano-pianos, photo-photos, auto-autos, kilo-kilos, solo-solos7 以元音字母加-o 结尾的名词加-sradio-radios, bamboo-bamboos, zoo-z...