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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。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.(一) 什么是一般现在时?一般现在时的基本用法有哪些呢?【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。 3.表示客观现实。如:The earth goes around the sun.地球绕着太阳转。(二)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。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:Tom 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。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。PS: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 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?(三)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 2、以辅音字母加“y”结尾的,要先将“y”变为“i”,然后在加“es”;以元音字母加“y”结尾的,直接加“S” 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、特殊:. 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. 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is。(四)巩固练习题:一、 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、观察下面两组句子,注意区分do和does,dont和doesnt。I go to school every day. I dont go to school every day.He goes to school every day. He doesnt go to school every day.Do you go to school every day? Yes, I do. (No, I dont) Does he go to school every day? Yes, he does. (No, he doesnt)注:(1)肯定句变否定句,第三人称单数把 does变doesnt (does not),其余把do变dont(do not),后面跟动词原形.(一请一还原)(2)变为一般疑问句,要在句首加do 或does ,这取决于主语是否第三人称单数。课堂练习:把下列句子改成一般疑问句和否定句。1I usually get up at six oclock.(并作肯定回答)2. We usually write e-mails on Saturday evening.(并作否定回答).3. They have the same hobby.(并作肯定回答).4.Suhai and Su yang like listening to music after school.(并作否定回答)5.Helen usually watches TV in the evening.(并作肯定回答)1
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