在一般现在时中，当主语是第三人称单数时，谓语动词要用第三人称单数形式，即常在动词原形后加-s或-es。一、人称代词he,she,it是第三人称单数。如：HelikeswatchingTV.他喜欢看电视。Shehaslunchattwelve.她十二点吃午餐。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。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：①"6"isaluckynumber."6"是个吉利数字。②"I"isaletter."I"是个字母。巩固练习题：I.写出下列动词的相应形式：1.第三人称单数：wash_________listen_______guess______study______do_________go________like______carry_________2.写出下列动词的现在分词形式<即动词加ing形式>：get_______begin________forget_________come________eat_______run_______play________give________ring_______dance________go_______II.用所给动词的适当形式填空：1．I________(write)tomysistereveryweek.2.Hedoesn’tfeelwelland____________(noteat)anyfoodthismorning.3.He______not_______(see)mecomein(进来).4.______Jerry___________(do)homeworkeveryday?5.Grandpa________(like)__________(play)chess.6.Tom’sfamily__________(watch)TVeverynight.7.It________(take)metwohourstofinishmyhomework.8.What______yourmotherusually_______(do)intheevening?Sheusually_______(wash)clothes.9.There________(be)afootballmatchonTVthisevening.10.Canyou_______(help)mewith__________(swim).11.I_________(know)theboy.12.They__________(go)toworkonSaturdays.13.Heusually_____________(come)toschoolearly.14.Ioften_____________(have)rice,meatandvegetables.15.Mygrandfather_____________(play)sportsinthepark.16.MissLi____________(teach)Englishinourschool.17.ThestudentsofClassFour_________(sing)asongonMonday.18.AliciaandJerry______________(do)homeworkafterschool.19.We_____________(take)ashowerintheevening.20.Hersister____________(have)Chineseeveryday.
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