名词单复数PPT课件.ppt

.,1,Welcome!,.,2,名词单数变复数,.,3,WhatsthisinEnglish?,Itsanapple.,Whatarethese?,Theyaretwoapples.,.,4,-Whatarethese?,-Whatsthis?,-Itsapen.,-Theyarepens.,.,5,-Whatarethese?,-Whatsthis?,-Itsabook.,-Theyarebooks.,.,6,backpacks,watches,oranges,pens,-Whatrethese?-Theyre.,.,7,maps,cases,keys,-Whatrethese?-Theyre.,.,8,单数,复数,可数名词,如何变化？,规则变化,.,9,1.一般情况下，直接在词尾加-s构成复数形式。,tiger,panda,tigers,pandas,dog,dogs,1.,.,10,name,pen,pencil,ruler,names,pens,pencils,rulers,.,11,fox,2.以s,x,ch,sh等结尾的名词，在词尾加-es构成复数形式。,foxes,class,classes,watch,watches,brush,brushes,2.,.,12,bus,buses,foxes,dishes,.,13,3.以“辅音字母+y”结尾的名词，应改y为i，再加-es。,family,families,ladies,3.,.,14,4.以“元音字母+y”结尾的名词，直接在词尾加-s构成复数形式。,boy,boys,monkey,monkeys,4.,.,15,key,cities,strawberries,keys,.,16,5.以f或fe结尾的名词，先将f或fe变成v，再加-es构成复数形式。,knife,knives,half,halves,“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。,5.,.,17,wives,leaves,wolves,.,18,“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。,巧记：,.,19,6.以o结尾的名词，有的加-s,有的加-es构成复数形式。,photo,photos,heroes,tomatoes,zoos,6.,.,20,以o结尾的名词,表示无生命事物的名词，词尾加-s,表示有生命事物的名词，词尾加-es。,加-es的名词有:potato,tomato,hero,巧记:英雄爱吃土豆炖西红柿。,.,21,Sumup:,1.一般情况下,直接在名词词尾加-s.,2.以s,x,sh,ch结尾的名词,在词尾加-es.,3.以辅音字母加y结尾的名词，要变y为i再加-es.,5.以f或fe结尾的名词，先将f或fe变为v,再加-es.,6.以o结尾的名词,表示无生命事物的名词加-s,表示有生命事物的名词加-es。,4.以“元音字母+y”结尾的名词，直接在词尾加-s.,.,22,7、单复数同形，保持原音。例词：fishfish,.,23,sheepsheepcattlecattledeerdeer,.,24,8、复数形式没有任何规律例词：manmenwomanwomen,.,25,childchildrenfootfeet,.,26,名词单数变复数后s/es的读音1.在清辅音后读/s/2.在元音和浊辅音后读/z/3.在/s/z/t/d/后读/iz/4.在/t/后读/ts/，在/d/后读/dz/,desksmaps,brotherspens,classes,watches,oranges,cats,friends,.,27,给下列可数名词加复数,tiger-dish-lady-monkey-ruler-pen-bus-boy-wolf-girl-box-cat-deer-family-panda-man-,tigers,ladies,monkeys,rule