一般现在时讲解与练习1

1、一般现在时Present 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：“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 oclock in the morning.我总是在早上7 点起床。We often read books at school.我们在学校经常看书。They usually have dinner at 6:00 in the evening.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 English very much.她非常爱英语。We are always a

3、t home on weekends.周末我们总留在家。Tom is an exellent 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 spring.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 plane leaves at 9:30.飞机 9 点 30 分起飞。Tomorrow is Sunday.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） ,every

4、day（每一天） ,in the morning（在早上） ,in the afternoon （在中午） ,in the evening（在晚上） ,on weekends（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 often go home by bus.I often play football on weekends.They usually watch TV in the evening.You often have lunch at 12 oclock.Mike a

5、nd Tom usually do homework together in the afternoon.Monkeys often climb trees up and down.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 often goes home by bus.He often plays football on weekends.Amy usually watches TV in the evening.My father often has lunch at 12 oclock.Tom loves his

6、cat. It often 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 -listen -love -work -B如果动词是以“ x, s, sh, ch, o”等字母结尾时，则要加“”。如 :eswatch -go -do -guess -wash -yy前面是元音字母（a, e, i, o, u ）sC. 如果动词结尾是“ ”，如果，就直接加“ ”，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（一）一、把下列动词改为第三人称单数的形式

7、。1. do _2. read _3. catch _4. wash _5. fly _6. go _7. have _8. use _9. cross _ 10. study _11. get _12. ask _13. teach _14. listen _15. feel _ 16. buy _17. touch _ 18. pass _ 19. like _20. come _二、选择填空。1.I(have, has) lunch at school.2.They(do, does) homework in the classroom.3.He often(have, has) bre

8、akfast at school.4.The dog(have, 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.Yo

9、u and I(have, has) beef for dinner.11.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.

10、He _for eight hours every day.A. working B. to work C. worksD. worked2. The picture _ nice.A. looks B. is looked C. look D. is lookingShe _ down and soon falls asleep. A. live B. lain C. laid D. sitsThey _ the office in time very morning. A. reach to B. arrived C. went D. get toWe shall go to Shanghai on business before you _ back next week. A. will come B. came C. would come D. comeThe plane _ over there.A. isB. areD. was7.I see her _ the room this morning.A. to enterB. enteredC. enterD. enters8.The teacher _us to cometo sc