一般现在时讲解与练习

1、般现在时Prese nt Tense一、概念：表示通常性、规律性、习惯性的状态或者动作（有时间规律发生的事件）的一种时间状态。拆开来讲就是：时间：指动作发生在 现在”的时间段内。那么，多长的时间才叫现在”呢？ 一天？状态：一般现在时最容易迷惑的一个问题，就是拿不准什么叫经常发生的动作或存在的状态”？这个问题要分三层来讲：1. 经常发生的动作”，比如每天起床、吃饭、上学，一个星期去几次超市或新华书店等。这些事件中，有的 是有规律的，有的是偶尔做几次。这些都算经常发生的事件。我们要告诉人们的，是这个动作经常发生，是一般的情况而不是具体的某一次。2. 事物存在的状态。3. 有些动作或状态是永恒的，比

2、如长江向东流、地球绕着太阳转，比如谚语中举的事例、文学作品中描绘 的事例，像 好马不吃回头草”等等二、基本用法：1表示经常性或习惯性发生的动作。如：I always get up at 7 o'lock in the morning.我总是在早上7点起床。We ofte n read books at school.我们在学校经常看书。They usually have dinner at 6:00 in the eve ning.他们通常在晚上6点吃晚餐。2. 表示现在的状态或特征。如：She loves En glish very much.她非常爱英语。We are always

3、 at home on weeke nds.周末我们总留在家。Tom is an exelle nt player.汤姆是一位优秀的运动员。3. 表示客观的现实。如：The sun rises in the east.太阳从东方升起。Summer comes after spri ng.夏天在春天的后面4. 用在按计划、规定或安排发生的事情。如：The pla ne leaves at 9:30.飞机9点30分起飞。Tomorrow is Sun day.明天是星期天。三、时间特征通常句子伴有下列时间状语，如：often （经常）usually （经常），on Mondays（在周一），eve

4、ry day （每一天），in the morning （在早上），in the after noon （在中午），in the eve ning （在晚上），on weeke nds（在周末），at 8:30 （在 8 点 30 分）等。四、句子结构1. 如果句子主语的人称是I, we, they, you或复数名词时，动词用动词原形。We ofte n go home by bus.I ofte n play football on weeke nds.They usually watch TV in the eve ning.You ofte n have lunch at 12 6cl

5、ock.Mike and Tom usually do homework together in the after noon.Mon keys ofte n climb trees up and dow n.2. 如果句子的主语是第三人称单数，即：he, she, it或单数名词 时，动词要变化，一般在动词词尾+S。She ofte n goes home by bus.He ofte n plays football on weeke nds.Amy usually watches TV in the eve ning.My father ofte n has lunch at 12 oc

6、lock.Tom loves his cat. It ofte n sleeps.五、动词的第三人称单数的变化规律：A. 一般在动词的后面直接加“ S”。如：eat wait liste n love work B. 如果动词是以“ x, s, sh, ch, o”等字母结尾时，则要加“ es”。如：watch go do guess wash C. 如果动词结尾是“ y”，如果y前面是元音字母（a, e, i, o, u），就直接加“ s”，如果不是y前面不是元音字母，就要把“ y”改为“ i”再加“ es”。play buy try -study -fly -练习、把下列动词改为第三人称单

7、数的形式1. do2. read3. catch4. wash5. fly6. go7. have8. use9. cross10. study11. get12. ask13. teach14. liste n15. feel16. buy17. touch18. pass19. like20. come二、选择填空。I. 1 (have, has) lunch at school.2. They (do, does) homework in the classroom.3. He often (have, has) breakfast at school.4. The dog (have,

8、 has) four legs.5. The rabbit (like, likes) carrots.6. My father and mother (have, has) tofu and pork for lunch.7. Mike and Tom ofte (go, goes) to school at seven.8. She usually (go, goes) shopping on Saturdays.9. My little brother often (read, reads) books in the evening.10. You and I (have, has) b

9、eef for dinner.II. Amy always (watch, watches) TV on weekends.12. Dick and Peter (love, loves) their new teachers.13. My grandma often (do, does) sports after dinner.14. Fishes (live, lives) in the water, and birds (live, lives) in thetree.15. A rabbit (have, has) two long ears.三、选择1. 10. Hefor eigh

10、t hours every day.A. worki ng B. to work C. works D. worked2. The picturen ice.A. looks B. is looked C. look D. is looki ng3. Shedow n and soon falls asleep.A. live B. la in C. laid D. sits4. Theythe office in time very morni ng.A. reach to B. arrived C. went D. get to5. We shall go to Shan ghai on bus in ess before youback next week.A. will come B. came C. would come D. come6. The pla neover there.A. is B. are C.am D. was7. I see herthe room this morni ng.A. to en ter B. en teredC. en terD. en ters8. The teacherus to come to schoo