名词变复数规则.pptx

-s  1)清辅音后读/s/; map-mapsbook—booksdesk--desks 2)浊辅音和元音后读/z/;bag-bags car-carsgame—gamesboy—boyskey--keys,sh,ch,x等结尾的加–es读/iz/bus-buseswatch-watches,se,ze,(d)ge等结尾的加–s读/iz/ license-licensesprice—pricescase-- 1)以辅音字母+y结尾的词变y为i再加es 读/z/ baby---babiescandy---edy---comediesfamily---families 2)以y结尾的专有名词,或元音字母+y结尾的名词变复数时,直接加s变复数:  如: twoMarys theHenrys monkey---monkeys holiday---holidays   比较:层楼:storey---storeys story---,变复数: 1)加s,读/z/如:photo---photos---photographskilo—kilos--kilograms(缩写词) piano---pianos(引入的外来词)radio---radios video—videoszoo---zoosbamboo---bamboos(以元音字母加o结尾的) 2)加es,读/z/如:negro—negroeshero—heroespotato--potatoes tomato—tomatoesvolcano—: 1)加s,读/s/,如:belief---beliefs roof---roofs safe---safes gulf---gulfschief---chiefscliff---cliffsgiraffe---giraffes 2)去f,fe加ves,读/vz/,如:half---halves  knife---knives leaf---leaves wolf---wolves wife---wives life---lives thief---thieves;  3)均可,如: handkerchief:handkerchiefs/ 1)child---chil