动词第三人称单数的变化规则及练习
一、 使用情况：
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。(标志词usually often always sometimes never every等)
二、变化规则
1、直接在动词后+s
例如： like- likes play-plays 2、以s, x, sh, ch, 接尾的动词：+es 例如： wash-washes 3、以辅音+o接尾的动词：+es 例如： go-goes
4、以辅音字母+y接尾的动词：变y为i+es
例如： fly-flies
以元音字母+y接尾的动词后+s 例如：play-plays
5、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
注意：不规则变化：have-----has，be-------is，do-----does
I 写出下列动词的第三人称单数(-s)和现在分词(-ing) go do play jump swim run put sing dance come get have fly study read write look drink eat walk like II选择
1. Ben_____a new book.
A. have B. has C. haves D. were
2. Ben and Mary some books.
A. have B. has C. are D. were
3. I some stories every day. A. have B. has C. are D. were 4.I __________ ice cream.
A.like B.likes C.liking D.likees 5. Kitty__ English every day
A.read B.reades C.reading D.reads 6.A man _____in front of his car.
A.walk B.walks C.walking D.work 7.Sam’s bicycle ______a bell.
A.have B has C.having D.is having 8.I every day
A.swim B.swims C.swiming D.swimes 9.He his homework every day. A.does B.do C.are D.is 10. I ________ my homework every day. A.do B.is C.does D.are 11.They ________ their homework every day. A. do B.does C. is D.are
11.Lucy_______with her hands.
A.touch B.touching C.touches D.touchs 12.Superdog________the boys
A.see B.sees C.seeing D.ses 13.Supergirl and Superdog______them.
A.saves B.save C.saving D.is saving 14.Jack_______their cow.
A.sells B.sell C.selling D.are selling 15.Jack______up the beanstalk.
A.gets B.get C.climb D.climbs 16.The giant ______boys.
A.eating B.don’t eat C.eats D.eat 17.The goose_______golden eggs.
A.lay B.lays C.layed D.layes 17.The woman_______the beanstalk.
A.cut B.cutting C.are cut D.cuts 18.Her mother ______the beanstalk.
A.take B.is take Ctakes D. taking 19Jack andher mother _____happer A.does B.are C.is D. have 20.He____the beans in the ground.
A.buy B.puts C.put D.buys
二．填空：
1.She ______(do) homework by herself. 2.Jack ______(go) home by bike.
3.The giant______(climb) up the beanstalk. 4.Her mum ______(run) to the goose. 5.He______(do not)like apple. 6,Sam______(put) it under his arm. 7.The boy_______(chase) it. 8.Kitty______(watch)TV everyday.
9.He______(feed)them at 8:00 in the morning. 10.When ______(do)he get up? 11.Grandma Wang___(live) in Pudong. 12.The girls___(give) the key to Grandpa. 13.That key ______(open) the old box. 14.She ______(say) “I like these puppets”. 15.What_____(do)Alice find? 16.Which toy_____(do) she like? 17.He doesn’t______(know)her name. 18.John can’t_______(find) his watch. 19.Where _____(do)Grandma live?
20.How does he______(go)to the post office?