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1、Welcome!名词单数变复数What’sthisinEnglish?It’sanapple.Whatarethese?Theyaretwoapples.--Whatarethese?--What’sthis?--It’sapen.--Theyarepens.--Whatarethose?--What’sthat?--It’sanEnglishbook.--TheyareEnglishbooks.backpackswatchesorangespens--What’rethese?--They’re….mapscaseskeys--What’rethose?--Th
2、ey’re….单数复数可数名词如何变化？规则变化不规则变化规则变化1.一般情况下，直接在词尾加-s构成复数形式。carbackpackcarsbackpacksbookbooks1.namepencardrulernamespenscardsrulersbox2.以s,x,ch,sh等结尾的名词， 在词尾加-es构成复数形式。boxesclassclasseswatchwatchesbrushbrushessxshch2.busbusesfoxesfox(狐狸)dish(盘子)dishes3.以“辅音字母+y”结尾的名词，应改y为i，再加-es。familyfam
3、iliescomediescomedy(喜剧)yyld3.strawberry(草莓)strawberries4.以“元音字母+y”结尾的名词，直接在词尾加-s构成复数形式。boyboysdaydaysoayy4.keykeys5.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。knifekniveshalfhalves“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。5.wivesleaveswolveswife(妻子)leaf(树叶)wolf(狼)roof(
4、屋顶)roofsroof“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：6.以o结尾的名词，有的加-s,有的加-es构成复数形式。photophotosheroestomatoeszooszoo(动物园)tomato(西红柿)hero(英雄)6.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。Sumup:1.一般情况下,直接在名词词尾加-s.2.以s,x
5、,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.名词单数变复数不规则变化有:man----men男人women---women妇女，女人child---children儿童，孩子sheep—sheep绵羊给下列可数名词加复数．bird--name--quilt--orange--ruler--photo--friend--boy--wa
6、tch--girl--case--cat--sister--tree--key--bed--parent--family-dictionary--cousin--child--party--cup--birdsquiltsorangesrulerscatsboysgirlscasessisterswatchestreeskeyscousinsbedsparentsfriendsfamiliesdictionariesphotosnameschildrenpartiescupsthis–that–I–you–he/she/it–am/is–thesethosewey
7、outheyare单数复数代词单数与复数句子单数变复数Thisisabook.Thatisaneraser.Itisaredapple.Iamaboy.He/Sheisateacher.What’sthis?Thesearebooks.Thoseareerasers.Theyareredapples.Weareboys.Theyareteachers.What’rethese?复数句子变单数句子Thesearedictionaries.单数一般疑问句,并作肯定回答划线提问Thisisadictionary.Arethesedictionaries?Yes,they
8、are.W
