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一般现在时-动词第三人称单数形式构成规则(一般现在时中主语时第三人称1、大多数动词在词尾加“S”如: stopstops makemakes readreads playplays z2、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: flyflies carrycarries studystudies worryworries3、以“s, x, ch, sh”结尾的,在词尾加“es”,发音为如: teachteaches watchwatches 4、以“o”结尾的动词,加“es”,如: gogoes dodoes 5、以不发音字母“e”结尾的开音节词,加“s” 如: closecloses iz6、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.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 doesnt + 动词原形,如:He goes to school at six in the morning. (变否定句) He doesnt 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。I 什么是一般现在时?一般现在时的基本用法有哪些呢?【No. 1】一般现在时的功能1.表示事物或人物的特征、状态。如:The sky is blue.天空是蓝色的。2.表示经常性或习惯性的动作。如:I get up at six every day.我每天六点起床。 标志词(时间状语): always, every week (day, year, month), once a week, every, sometimes, at, on Sunday uauslly often,never,hardly.3.表示客观现实。如:The earth goes around the sun.地球绕着太阳转。【No. 2】一般现在时的构成1. be动词:主语+be(am,is,are)+其它。如:I am a boy.我是一个男孩。2.行为动词:主语+行为动词(+其它)。如:We study English.我们学习英语。当主语为第三人称单数(he, she,it)时,要在动词后加-s或-es。如: Mary likes Chinese.玛丽喜欢汉语。【No. 3】一般现在时的变化 1. be动词的变化。a 否定句:主语+ be + not +其它.如: He is not a worker.他不是工人。 b 一般疑问句:Be +主语+其它。 如:-Are you a student? -Yes. I am. / No, Im not. c 特殊疑问句:疑问词+一般疑问句。如: Where is my bike? 2.行为动词的变化。 a 否定句:主语+ dont( doesnt ) +动词原形(+其它)。如: I dont like bread. b 当主语为第三人称单数时,要用doesnt构成否定句。如: He doesnt often play. c 一般疑问句:Do( Does ) +主语+动词原形+其它。如:- Do you often play football? - Yes, I do. / No, I dont. 当主语为第三人称单数时,要用does构成一般疑问句。如: - Does she go to work by bike? - Yes, she does. / No, she doesnt.【No. 4】特殊疑问句:疑问词+一般疑问句。如: How does your father go to work?II 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: He likes watching TV. 他喜欢看电视。 he 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: Han Mei looks like her mother. 韩梅看起来像她的母亲。 Beijing is in China. 北京在中国。 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: A horse is a useful animal. 马是有用的动物。 This book is yours. 这本书是你的。 That car is red. 那辆小汽车是红色的。 The cat is Lucys. 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: Everyone is here. 大家到齐了。 There is something wrong with the watch. 这块手表有毛病。 This is a pen. 这是一支钢笔。 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: The milk is in the glass. 牛奶在玻璃杯里。 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: 6 is a lucky number. 6是个吉利数字。 I is a letter. I是个字母。巩固练习题:I 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. 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) 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) 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.20. 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 home
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