How to add +s es

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1、名词复数的构成方法及读音规则清清浊元浊清辅音后读/s/浊辅音和元音后读/z/一般情况加–s：map-mapsboy-boysgirl-girls2)以s,sh,ch,x结尾加–es,读/iz/bus-buseswatch-watchesbox-boxes3)以辅音字母+y结尾,变y为i再加es,读/z/baby---babiescity-citiescountry-countries但以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。例如：twoMarystheHenrysmonkey---monkeys4)以o结尾的名词，变复数时a.以两个元音字母结尾（其一必定是o）时，

2、加szoo-zooskangaroo-kangaroosb.某些外来词,加esphoto-photoespiano-pianoespotato-potatoesc.其余情况，都加s以f或fe结尾的名词变复数时：a.加s，如：belief---beliefsroof---roofssafe---safesb.去f,fe加ves，如：half---halvesknife---knivesleaf---leavesc.上述a和b两种方法均可,如handkerchief:handkerchiefs/handkerchievesExercise:pen-bag-car-brush-holiday-tom

3、ato-hero-Negro-gulf-wolf-wife-life-thief-pen-pens/s/bag-bags/z/car-cars/s/brush-brushes/iz/holiday---holidays/z/tomato-tomatoes/z/hero-heroes/z/Negro-Negroes/z/gulf---gulfs/s/wolf---wolves/z/wife---wives/z/life---lives/z/thief---thieves/z/TONGUETWISTERS1.Iboughtaboxofbiscuits,aboxofmixedbiscuits,a

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