【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。

　　3.表示客观现实。如：The earth goes around the sun.地球绕着太阳转。

　　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。

　　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?

　　动词+s的变化规则

　　1．一般情况下，直接加-s，如：cook-cooks, milk-milks

　　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

　　小练习

　　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. 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.