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。
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。
3、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?
4、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
下一页练习题
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.
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. _________________