初三一般现在时讲解与练习

　　一、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、一般现在时的构成
　　1.be动词：肯定句：主语+be(am,is,are)+其它。如：I am a boy. 我是一个男孩。
　　2.行为动词：肯定句：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。
　　动词+s的变化规则
　　1.一般情况下，直接加-s，如：cook-cooks,
　　2.以s. x. sh. ch. o结尾，加-es，如：guess-guesses, wash-washes, watch-watches, go-goes
　　3.以―辅音字母+y‖结尾，变y为i, 再加-es，如：study-studies 特殊：have----has
　　三、一般现在时的变化
　　1.be动词的变化。
　　否定句：主语+ be + not +其它。 如：He is not a worker.他不是工人。
　　一般疑问句：Be +主语+其它。如：-Are you a student? -Yes. I am. / No, I'm not.
　　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。
　　否定句：主语+ don't( doesn't ) +动词原形(+其它)。如：I don't like bread.
　　当主语为第三人称单数时，要用doesn't构成否定句。如：He doesn't often play.
　　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 don't.
　　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 doesn't.
　　特殊疑问句：疑问词+一般疑问句?如：How does your father go to work?

　　初三一般现在时讲解与练习：

　　一、出下列动词的第三人称单数
　　drink ________ go _______ stay ________ make ________look _________ be________ read________
　　have_______ pass_______ carry ____ come________ watch______ plant_______wash________
　　fly ________study_______ brush________ do______ teach_______ like________ play________
　　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. I‘m 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?- It‘s 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.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 don‘t do her homework on Sundays. _________________