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哪些主语是第三人称单数?现归纳总结如下：一、人称代词he,she,it是第三人称单数。如：HelikeswatchingTV.他喜欢看电视。Hehaslunchattwelve.他十二点吃午餐。Itlookslikeacat.它看起来像只猫。二、单个人名、地名或称呼作主语；是第三人称单数。如：①HanMeilookslikehermother.韩梅看起来像她的母亲。标志词（时间状语）：always,everyweek(day,year,month…),onceaweek,every…,sometimes,at…,onSundayuausllyoften,never,hardly..........②BeijingisinChina.北京在中国。③UncleWangoftenmakescakes.王叔叔经常做蛋糕。三、单数可数名词或this/that/the+单数可数名词作主语时，是第三人称单数。如：①Ahorseisausefulanimal.马是有用的动物。②Thisbookisyours.这本书是你的。③Thatcarisred.那辆小汽车是红色的。④ThecatisLucy's.这只猫是露茜的。四、不定代词someone,somebody,nobody,everything,something，anything等及指示代词this,that作主语时，是第三人称单数。如：①Everyoneishere.大家到齐了。②Thereissomethingwrongwiththewatch.这块手表有毛病。③Thisisapen.这是一支钢笔。④Thatisaneraser.那是一块橡皮擦。五、不可数名词作主语时为第三人称单数。如：①Themilkisintheglass.牛奶在玻璃杯里。②Thebreadisverysmall.那面包很小。六、当数字或字母作主语时，看作第三人称单数。如：①6isaluckynumber.6是个吉利数字。②Iisaletter.I是个字母。（三）一般现在时------动词第三人称单数形式构成规则（一般现在时中主语是第三人称）1、大多数动词在词尾加“S”如：①stop－stopsmake－makesread－readsplay－plays[z]2、以辅音字母加“y”结尾的，要先将“y”变为“i”，然后在加“es”读[iz]如：fly－fliescarry－carriesstudy－studiesworry－worries3、以“s,x,ch,sh”结尾的，在词尾加“es”，发音为如：teach－teacheswatch－watches4、以“o”结尾的动词，加“es”，如：go－goesdo－does5、以不发音字母“e”结尾的开音节词，加“s”如：close－closes[iz]6、特殊：○1.be动词包括：am，is，are。第三人称单数用is；过去式为was；复数用are，过去式为were.○2.动词have，遇到主语是第三人称单数时，要用has；动词be的第三人称单数形式is。（四）巩固练习题：一、写出下列动词的第三人称单数形式：sit--guess--die--go--rush--reach--touch--brush--fly--copy--say--run--do--fix--live--cry--enjoy--have--wish--play--Tie--teach--buy--study--drink--go--stay--make--look--carry--come--watch--plant--fly--do--二、用括号内动词的适当形式填空。1.Heoften________(have)dinnerathome.2.DanielandTommy_______(be)inClassOne.3.We_______(notwatch)TVonMonday.4.Nick_______(notgo)tothezooonSunday.5.______they________(like)theWorldCup?6.What_______theyoften_______(do)onSaturdays?7._______yourparents_______(read)newspaperseveryday?8.Thegirl_______(teach)usEnglishonSundays.9.SheandI________(take)awalktogethereveryevening.10.There________(be)somewaterinthebottle.11.Mike_______(like)cooking.12.They_______(have)thesamehobby.13.Myaunt_______(look)afterherbabycarefully.14.Youalways_______(do)yourhomeworkwell.15.I_______(be)ill.I’mstayinginbed.16.She_______(go)toschoolfromMondaytoFriday.17.LiuTao_______(do)notlikePE.18.Thechildoften_______(watch)TVintheevening.19.SuHaiandSuYang_______(have)eightlessonsthisterm.20.－Whatday_______(be)ittoday?－It’sSaturday三、改错(划出错误的地方，将正确的写在横线上)1.IsyourbrotherspeakEnglish?__________________2.Doeshelikesgoingfishing?__________________3.Helikesplaygamesafterclass.__________________4.Mr.WuteachsusEnglish.__________________5.Shedon’tdoherhomeworkonSundays._________________