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一、变化规则1、一般情况下直接在词尾加s例：book---booksapple---applesorange---_________tiger---_________girl---__________banana---_________lemon---__________pencil---_________2、以s,x,sh,ch结尾的单词，加es例：bus---busesbox---boxesfish---fishesbeach---beachesclass---fox---beach---watch---3、以f或fe结尾的单词，把f或fe变成v加es例：leaf---leavesknife---(刀)wife---（妻子）4、以辅音字母加y结尾的单词，把y变i加es例：fly---fliesbutterfly---_______library---_______baby---_____puppy---______二、选择单词的适当形式填空，写在横线上。1.It’ssohot.Iwanttoeatan________.Doyoulike______?(ice-cream,icecreams)2.Therearemany_________(animal,animals)inthezoo.Ilike________.(giraffe,giraffes)3.---CanIhelpyou?---Three_______(doll,dolls),please.4.Ilike____________(strawberry,strawberries)becausetheyaresweetandjuicy.5.Idon’tlike_______(fly,flys,flies)becausetheyareuglyanddirty(脏的).6.Lookatthe_______(baby,babys,babies).Theyaresocute.7.Ilike________(water,waters)becausewedrinkwatereveryday.8.These_________(boy,boys,boies)like_________.(monkey,monkeys,monkeies)9.Brushyour________(tooth,teeth),Kitty.It’stimeforbed.三、有些单词就像孙悟空一样会变身，你知道他们是怎么变得吗？现在看看这些变身后的单词，你能把他变身以前的样子写出来吗？lions---_______strawberries---________roses---_________teeth---_______dragonflies---pears---_________