一般现在时基本用法介绍.doc

.一般现在时基本用法介绍一、一般现在时的意义1.表示事物或人物的特征、状态。如：The sky is blue.天空是蓝色的。 He is tall.他很高。2.表示经常性或习惯性的动作（常与usually,always ,sometimes,often,every .连用）。如：I get up at six every day.我每天六点起床。My mother goes hiking every weekend.我妈妈每个周末都要去远足。He often plays football on the weekend.他周末常常踢足球。3.表示客观事实，普遍真理。如：The earth goes around the sun.地球绕着太阳转。 The trees turn green in spring.春天树子要绿。二、一般现在时的谓语动词形式1.be动词：主语+be(am,is,are) 如：I am a boy.我是一个男孩。2.情态动词+动词原形如：He can fly kites .他会放风筝。My sister can sing English songs very well.我妹妹唱英文歌曲唱得很好。3. 实义动词（又称行为动词）：在一般现在时中，实义动词作谓语动词有两种形式：动词原形和动词的单数第三人称形式（1）动词原形：当主语不是单数第三人称时，谓语动词用原形。如：We study English.我们学习英语。I like singing.我喜欢唱歌。（2） 当主语是单数第三人称（he,she ,it以及可以用he, she ,it代替的名词、名词短语，如Amy,Zhang Peng,my sister,Johns pen pal等）时，谓语动词要使用单数第三人称形式（简称“单三式”或“单三现”。如：He likes dancing.他喜欢跳舞。 My sister usually goes shopping on the weekend.我妹妹周末常常去购物。 Mary likes Chinese.玛丽喜欢汉语。三、一般现在时的句型转换（变否定句和一般疑问句）1. 谓语动词是be动词时：（1）变否定句：在be 后加not.如：He is a worker. He is not a worker.They are from the USA. They arent from the USA.（2）变一般疑问句：把Be 动词提至句首(如果有第一人称，将第一人称改为第二人称，如果有some,将some 改为any)。如：I am a student.-Are you a student?-Yes. I am. / No, Im not.They are in the zoo.Are they in the zoo?Yes ,they are. No,they arent.2.谓语是情态动词时的句型转换（1）变否定句：在情态动词后加not.如：He can play football. He cant play footballThey can speak English very well. They can speak English very well.（2）变一般疑问句：把情态动词提至句首(如果有第一人称，将第一人称改为第二人称，如果有some,将some 改为any)。如：I can swim. Can you swim？ Yes ,I can. No, I cant.He can draw cartoons. Can he draw cartoons? Yes ,he can. No,he cant.3、谓语动词是实义动词（行为动词）时的句型转换。 （1）当谓语动词是实义动词原形时：变否定句：在动词原形前面加doesnt如：My mother likes bread. My mother doesnt like bread. He comes to school on foot. He doesnt come to school on foot.变一般疑问句：在句首加Do(如果有第一人称，将第一人称改为第二人称，如果有some,将some 改为any)。I often play football.- Do you often play football?- Yes, I do. / No, I dont.（2）当谓语动词是第三人称单数形式（单三式或单三现）时变否定句：在动词原形前面加doesnt,再把“单三式”还原如：He likes bread. I doesnt like bread. My pen pal goes to school on foot. My pen pal doesnt go to school on foot.变一般疑问句：在句首加Does(如果有some,将some 改为any)。Peters pen pal often plays football.- Does Peters pen pal often play football?- Yes, he does. / No, he doesnt.She goes to work by bike. - Does she go to work by bike? - Yes, she does. / No, she doesnt.四、特殊疑问句：跟其他特殊疑问句一样，由“疑问词+一般疑问句”构成。如：How does your father go to work?Where does your father work？When does your pen pal go to school every day？五、动词单数第三人称形式的变化规则： 规则变化：1 一般情况下，直接加-s，如：cook-cooks, milk-milks2以s. x. sh. ch. o结尾，加-es，如：guess-guesses, wash-washes, watch-watches, go-goes3以“辅音字母+y”结尾，变y为i, 再加-es，如：study-studies 不规则变化：1. have -has 2. go-goes 3.do -does6、 动词单数第三人称使用、构成、句型转换顺口溜 一般现在时，谓语若是实义（动）词：单三人称单三式，单三式，尾加-s-es一般情况直接加（s），s,x,ch(sh结尾）-es往后压，辅y结尾变i加（es),have直接变has,does,goes是“一家”一般情况直接加（s），s,x,ch(sh结尾）-es往后压，辅y结尾变i加（es),have直接变has,does,goes是“一家”句型转换别着急，doesnt， Does 来帮你否定（句）动（词）前doesnt 立疑问（句）Does开头很容易，有一点，切切记，用了(doesn)Does -s(-es) 去.Does问Does答，记住口诀顶呱呱。七、一般现在时知识点图解：一般现在时用法专练:一、 写出下列动词的第三人称单数drink _ go _ stay _ make _look _ have_ pass_ carry _come_ watch_ plant_ fly _study_ brush_ do_ teach_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 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)_五、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 dont do her home