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1、语法新课堂,何谓第三人称单数形式,一.第三人称单数形式的词尾变化.,在一般现在时中,当主语是第三人称单数形式时,行为动词用第三人称单数形式,即加-s 或 es.具体方法如下:,一般情况下,直接加-s.如:work-works play-plays rain-rains see-sees,2.以 sh,ch,s,x或o结尾的词后加-es.如:wash-washes teach-teaches fix-fixes do-does go-goes,3.以辅音字母加-y结尾的,先把y变成i,再加-es.如:study-studies fly-flies carry-carries,二.哪些主语是第三人
2、称单数,1.人称代词he,she,it是第三人称单数.1).He likes watching TV.他喜欢看电视.2).She has lunch at twelve.他十二点吃午餐.3).It looks like a cat.它看起来象只猫.,2.单个人名.地名或称呼作主语时,是第三人称单数形式.如:1).Han Mei looks like her mother.韩梅看起来像她的母亲.2).Beijing is in China.北京在中国.3).Uncle Wang often makes cakes.王叔叔经常做蛋糕.,3.单数可数名词或“this/that/the+单数可数名词”
3、作主语时,是第三人称单数.如:1).A horse is a useful animal.马是一种有用的动物.2).This book is yours.这本书是你的.3).That car is red.那辆汽车是红色的.4).The cat is Lucys.这只猫是露西的.,someone,somebody,nobody,everything,something等不定代词及指示代词this,that作主语时,是第三人称单数.如:1).Everyone is here.大家到齐了.2)This is a pen.这是一支钢笔.3).That is an eraser.那是一块橡皮.,5.不
4、可数名词作主语时,为第三人称单数.如:1).The milk is in the glass.牛奶在玻璃杯里.2).The bread is very small.那块面包很小.,6.当数字或字母做主语时,看做第三人称单数.如:1).“6”is a lucky number.“6”是个吉利数字.2).“I”is a letter.“I”是个字母.,专项习题精练(着眼高分 查漏补缺),用括号中所给动词的适当形式填空,Jack_(love)his mother very much.Mary and Lily_(come)from the same country.The juice(果汁)_(be
5、)in the fridge(冰箱).“2”_(sound)like“too”.,loves,come,is,sounds,5.The tiger_(be)a dangerous animal.6.Shanghai_(be)a modern city.7.Everybody_(know)Jay Chou.8.This_(be)my new pen pal.,is,is,knows,is,9.There_(be)some bread on the table.10.Either I or he_(like)playing soccer.,is,likes,巩固练习题：写出下列动词的第三人称单数形
6、式：sit-guess-die go-rush-reach-touch-brush-fly-copy-say-run-do-fix-live-cry-enjoy-have-wish-play-Tieteach-buy-study-drink-go-stay-make look-carrycome-watch-plant-fly-do-,二、用括号内动词的适当形式填空。1.He often _(have)dinner at home.2.Daniel and Tommy _(be)in Class One.3.We _(not watch)TV on Monday.4.Nick _(not go
7、)to the zoo on Sunday.5._ they _(like)the World Cup?6.What _they often _(do)on Saturdays?7._ your parents _(read)newspapers every day?8.The girl _(teach)us English on Sundays.9.She and I _(take)a walk together every evening.10.There _(be)some water in the bottle.11.Mike _(like)cooking.12.They _(have
8、)the same hobby.13.My aunt _(look)after her baby carefully.14.You always _(do)your homework well.15.I _(be)ill.Im staying in bed.16.She _(go)to school from Monday to Friday.17.Liu Tao _(do)not like PE.18.The child often _(watch)TV in the evening.19.Su Hai and Su Yang _(have)eight lessons this term.2
9、0.What day _(be)it today?Its Saturday,.三、按照要求改写句子1.Daniel watches TV every evening.(改为否定句)_2.I do my homework every day.(改为一般疑问句，作否定回答)_3.She likes milk.(改为一般疑问句，作肯定回答)_4.Amy likes playing computer games.(改为一般疑问句，作否定回答)_5.We go to school every morning.(改为否定句)_6.He speaks English very well.(改为否定句)_7.
10、I like taking photos in the park.(对划线部分提问)_8.John comes from Canada.(对划线部分提问)_ 9.She is always a good student.(改为一般疑问句，作否定回答)_ 10.Simon and Daniel like going skating.(改为否定句)_,四、改错(划出错误的地方，将正确的写在横线上)1.Is your brother speak English?_2.Does he likes going fishing?_3.He likes play games after class._4.Mr.Wu teachs us English._5.She dont do her homework on Sundays._,
