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名词单数变复数口诀•(一)规则变化•名词单数变复数，直接加-s占多数；•book-books;pen-pens;apple-apples•s,x,z,ch,sh来结尾，直接加上-es；•dress-dresses;box-boxes;buzz-buzzes;watch-watches;brush-brushes•词尾是f或fe，加-s之前先变ve；•一个”狼”的”妻子”,拿着”半”片”树叶”和”架子”上的一把”刀”,要了那个”贼”的”命”•wolf,wife,half,leaf,shelf,knife,thief.life•辅音+y在词尾，把y变i再加-es；•study-studies;baby-babies;city-cities•元音+y在词尾,只加s就足够•boy–boys;day–days;monkey–monkeys•词尾字母若是o，常用三个已足够，要加-es请记好，hero,tomato,potato。•美国黑人和英雄爱吃土豆和西红柿。•negro-negroes;hero-heroes;potato-potatoes;tomato-tomatoes•其余o结尾的词加s,photo-photos;piano-pianos•(二)不规则变化•男人女人a变e，鹅足牙oo变ee；•man-men;woman-women;goose-geese;foot-feet;tooth-teeth•老鼠虱子也好记，ous变ic；•mouse-mice;louse-lice•孩子加上ren，鱼鹿绵羊不用变•child-children;fish;deer;sheep•this---these(这些)•that--those(那些)Exercises•写出下列名词复数•leaf______box_______knife_______fly______fox______bus______bench_____brush_____kiss______church______dish_____ruler______glass_____pencil________boy______zoo______man______sheep_______knife______lady______key______strawberry______watch______bamboo______city______family______day_____apple_______eraser______speech______thief______mouse______fish_____goose____deer_______foot______child_______tooth_______hero_______boss_____monkey______city______goat______radio________horse______dog______Exercises•写出下列名词复数•leaf__leavesbox---boxesknife----knivesfly—fliesfox---foxesbus---busesbench---benchesbrush--brushes•dish--dishesruler—rulersglass--glassespencil--pencilsboy--boyszoo--zoosknife---kniveslady—ladieskey—keyscity-citiesstrawberry—strawberrieswatch—watchesbamboo–bamboosfamily—familiesday--daysExercices•Apple—appleseraser--erasers•Speech--speechesthief_thieves•boss--bossesmonkey–monkeys•City---citiesgoat--goatsradio--radioshorse--horsesdog--dogs•Man—mensheep_sheepmouse--mice•fish_fishgoose--geesedeer--deer•foot—feetchild---children•Tooth—teethhero---heroes