动词的第三人称单数形式_动词第三人称单数形式
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一 小学英语动词的单三形式讲解
大家都知道,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。但有些同学们对于哪些主语是第三人称单数还不十分清楚,现归纳总结如下:
一、人称代词he, she, it是第三人称单数。如: He likes watching TV.他喜欢看电视。She has lunch at twelve.她十二点吃午餐。It looks like a cat.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: 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。
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:
① A horse is a useful animal.马是有用的动物。② This book is yours.这本书是你的。③ That car is red.那辆小汽车是红色的。④ The cat is Lucy'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:
① Everyone is here.大家到齐了。
② There is something wrong with the watch.这块手表有毛病。③ This is a pen.这是一支钢笔。
④ That is an eraser.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: ① The milk is in the gla.牛奶在玻璃杯里。② The bread is very small.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” is a lucky number.“6”是个吉利数字。②“I” is a letter.“I”是个字母。第三人称单数形式的构成1.一般直接在词尾加 s,如:work-works live-lives make-makes 2.以s,x,ch ,sh等结尾的单词加 es , 如: mi-mies fix-fixes finish-finishes teach-teaches 3.以辅音字母加y结尾的单词,变y为i加 es , 如: fly-flies 4.以辅音字母加o结尾的单词,加 es 如: go-goes do-does
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.除上述规律外,还应注意下面三点:
1.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是is。
2.含有动词第三人称单数形式的句子变否定句时,要用 doesn't + 动词原形,如:
He goes to school at six in the morning.(变否定句)→ He doesn't go to school at six in the morning.3.对含有动词第三人称单数形式的句子提问时,要用助动词 does,如:
She goes home at five every day.(对划线部分提问)→ When / What time does she go home every day? 一般现在时中的第三人称单数形式
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。
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动词单三的练习三 写出下列动词的第三人称单数。go do play jump swim run put sing dance come get have fly read write look drink eat walk 一.根据括号里单词的适当形式填空 1.She _____(be)a writer.2.It _____(look)like a monkey.3.We_____(go)to the park.4.He _____(go)to school.5.Amy_____(like)eating fruits.6.Hebei_____(be)next to Shandong.7.Our teacher _____(be)talking with John.8.Whose book _____(be)this ? 9.Dogs _____(be)our friends.第2 / 6页
10.That blackboard _____(be)clean.11.The desk _____(be)Tom’s.12.Somebody _____(do)her homework.13.Everybody _____(is)ok!14.Nobody _____(be)in the park.15.There _____(be)someone in the claroom.16.That cat _____(be)mine.17.A little water _____(be)in the cup.18.Cheese _____(taste)well.19.The letter “O” _____(look)like zero.20.“4” _____(be)a bad number in China.二.把下列句子改成第三人称单数句的肯定句、否定句、一般疑问句,并做回答。
1.I like playing the pinao in the music room.(Tom)2.You need a pencil-box for new term.(Sam’s sister)
3.I do my homework at half past four in the afternoon.(she)4.I have breakfast at twenty-five past seven in the morning.(her father)5.I watch TV at quarter past six with my parents.(Tom’s sister)二 小学英语所有句型转换的方法
基本助动词只有三个:be, do, have, 他们没有词汇意义,只有语法作用,第3 / 6页
如协助构成进行体,完成体,被动态,否定句,疑问句等。
一、肯定句改否定句的方法——一步法
1、在be动词后加not。如:is not,are not,am not,was not,were not;
2、在can,should,will等后加not。如:cannot,should not,will not;
3、上述都没有的,在动词前加助动词否定形式don’t/doesn’t/didn’t。
4、some 改成any。
二、肯定句改一般疑问句的方法——三步法
1、把be动词放在句首,剩下的照抄,(some 改成any,my改成your等)句点改成问号。
2、把can,shall,will等放到句首,剩下的照抄,(some 改成any,my改成your等)句点改成问号。
例如:陈述句: They are in the park.He can play the guitar..一般疑问句: Are they in the park? Can he play the guitar? 把下列句子变成一般疑问句
1.I am listening to music._______________________________________ 2.Mike is a student._______________________________________ 3.Sarah can clean the claroom.________________________________________ 4.They are in the zoo.________________________________________
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5.There are some flowers in the vase.________________________________________ 6.This is my sister._________________________________________ 7.We are sweeping the floor.__________________________________________
3、上述都没有的,在句首请助动词Do/Does/Did帮忙,剩下的照抄,(some 改成any,my改成your等)句点改成问号。
例如:陈述句: I like the ducks.He likes the dogs.一般疑问句:Do you like the ducks? Does he like the dogs? 把下列句子改为一般疑问句。
1.We need some masks._________________________________ 2.They like making the puppet._________________________________ 3.Su Hai and Su Yang live in a new house._________________________________________________ 4.I put a book on my head._________________________________________________ 5.They sing “In the claroom”together._________________________________________________ 6.We play basketball on Sundays.动词的第三人称单数形式
动词的第三人称单数形式规律如下:
1、多数在动词后加s play—plays like—likes read-reads sing-sings dance-dances cook-cooks
look-looks2、以s,x,sh,ch,o结尾的动词加es go—goes wash—washes watch-watches catch-catches do-does3、以辅音字母加y结尾,把y改i再加es fly—flies study—studies
try-tries 特别注意:以y 结尾的动词变化,看清楚y前面的那个字母是元音还是辅音? 辅音+y的,要改y,例如carry carries;元音+y 的,不改y,例如 play plays.4、动词have 的第三人称单数形式是has,这是一个
不规则的变化,我们经常会遇到。
5、含有动词第三人称单数的句子,在变否定句时要
在动词前加doesn’t;变疑问句时要在主语前加助动词does。这时句子的谓语动词改为原形。如: Alice usually plays in the park.Alice doesn’t usually plays in the park.