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bag书包tape修正带book书key钥匙clock钟watch手表boy男孩girl女孩man男人onetwothreecar小轿车bus公共汽车bike自行车bed床chair椅子desk课桌cake蛋糕pie派；馅饼hotdog热狗vest背心cap鸭舌帽hat礼帽piano钢琴violin小提琴guitar吉他swim游泳run跑步jog慢跑one1seven7two2eight8three3nine9four4ten10five5eleven11six6twelve12thirteen13fourteen14fifteen15sixteen16seventeen17eighteen18nineteen19twenty20thirty30forty40fifty50sixty60seventy70eighty80ninety90keydesktapebuswatchstudyknifethirtyfortyfiftysixtyseventyeightyninetythirtykeysfortydesksfiftytapessixtybusesseventywatcheseightystudiesninetyknives可数名词都有单数和复数之分。一、规则的可数名词的复数变化规则：1.一般情况加s：book–books等2.以s,ch,x结尾的加es：buses,watches,boxes等3.辅音字母（除a,e,i,o,u元音字母以外的字母）+y结尾的变y为i再加es：study—studies,family—families等4.以f，fe结尾的,变f或fe为v再加es：knife--knives三、名词词尾的读音规则:A．在[p][t][k][f]等清辅音后读[s]cups，hatsB.在[s][z][∫][t∫]等音后读[iz]glassesC.在其他情况下读作[z]beds,knives.二、不规则的可数名词的变化规则：man—men,woman—women赛一赛(看哪组读得好，翻译得准确）fouroneteneleveneighttwentytwelvesixninetwoseventhirteenfifteenfivethreefourteensixteennineteenseventeeneighteen写出下列单词的复数形式cupmnbustapewomnwatchtapstudglassbookfamilboxhatknipeachyaafesssesseseseseiesvesesesyiesfouroneteneleveneighttwentytwelvesixninetwoseventhirteenfifteenfivethreefourteensixteennineteenseventeeneighteencupstapesbagssandwichesboxesstudiestapspeachesfamilieshatsbuseswatchesknivesglassesbooks[S][Z][IZ]Homework:1、背诵单词的复数形式。2、默写D部分单词一英（先写下中文）。