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1、7A Unit 1 Grammar: Simple Present Tense(一般现在时)一般现在时的用法： 1） 经常性或习惯性的动作，常与表示频度的时间状语连用。时间状语 every, sometimes, at, on Sunday。例如： I leave home for school at 7 every morning. 每天早上我七点离开家。 2） 客观真理，客观存在，科学事实。例如： The earth moves around the sun. 地球绕太阳转动。 Shanghai lies in the east of China. 上海位于中国东部。 3） 表示格言或警句
2、。例如：Pride goes before a fall. 骄者必败。 注意：此用法如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时。 例Columbus proved that the earth is round.哥伦布证实了地球是圆的。 4） 表示现在的状态、能力、性格、个性。例如： I dont want so much. 我不要那么多。 Ann writes good English but does not speak well. 安英语写得不错，讲的可不行。 一般现在时的结构：1） 主语+be动词（is/ am /are）+。I am a teacher/ hap
3、py. You are a student.They are students. We are good friends. These classrooms are clean. He/ She/It is fine.The air is fresh here.变成否定时在be动词后面加上not.e.g. I am not a teacher.You are not a student. are not 可以缩写为arent.He/ She /It is not fine. is not 可以缩写为isnt.变成疑问句时：把be动词提到句首。e.g. Are you a student? Ye
4、s, I am. / No, I am not. Is he fine? Yes, he is. / No, he isnt.我用am,你用are,is连着他,她,它; 单数名词用is,复数名词全用are.变否定,更容易,(be)后加not就可以;变问句,往前提,句末问号莫忘记.疑问否定任你变,句首大写莫迟疑.2） 主语+ 行为动词（do/ does）+ 。e.g. I/ We/ You/ They/ The children like English. He/ She/ It/ A boy likes English.The water flows into the sea.否定形式(在主语
5、后面加上dont或者doesnt)：I/ We/ You/ They/ The children dont like English.He/ She/ It / A boy doesnt like English.The water doesnt flow into the sea.一般疑问句：Do/Does +主语+动词原形+?e.g Do you like English? Yes, I do./ No, I dont. Does the boy like English? Yes, he does./ No, he doesnt.小结：当主语为第三人称单数（he/ she/ it），可数
6、名词单数（a boy），不可数名词（The water/ air.）时，后面的谓语动词要变成单数形式，也就是在后面加上s/ es. 谓语动词变成单数的具体规则如下：1. 一般在后面直接加上s. e.g. likelikes cleancleans 2. 以s/ es/ x/ sh/ ch 结尾的单词，在后面加上es. e.g. brushbrushes3. 以辅音字母加y结尾的单词，把辅音字母改成i再加es. e.g. studystudies carrycarries4. do/ godoes/goes一般现在时练习一、 写出下列动词的第三人称单数talk_ forget _hope _st
7、op _perform_play_ say_ buy_ worry_ fly_ study_like_ make_ take_ love_ recite_become_ come_ drive_ shine_ leave_wake_ ride_ write_ hike_ give_ see_swim_ stop_ shop_ plan_ get_ sit_let_ cut_ run_ forget_ begin_ wash_watch_finish_teach_fish_reach_go_do_二、用括号内动词的适当形式填空。1. He often _(have) dinner at home
8、.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
9、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 _
10、(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.21 We often _ (play) in the playground.22. He _ (get) up at six oclock.23. _ you _ (brush) your teeth every morning?24. What _(do) he usual
11、ly _ (do) after school?25. Danny _ (study) English, Chinese, math, science and art at school.26. Mike sometimes _ (go) to the park with his sister.27. At eight at night, she _ (watch) TV with her parents.28. _ Mike _ (read) English every day?29. How many lessons _ your classmate _ (have) on Monday?3
12、0.What time _ his mother _ (do) the housework?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，并作否定回答)_3. She likes milk.(改为一般疑问句，并作肯定回答)_4. Amy likes playing computer games.(改为一般疑问句，并作否定回答)_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)11. Do you often play football after school?(肯定回答) _12.
