一般现在时的讲解及用法

1、亠般现在时的讲解及用法定义与讲解1定义：一般现在时，表示经常性的事情，经常性的动作或一般性事实。2, 只有在第三人称单数用动词的三单变化”其他用动词的原形。注：1）第一人称（I，we）第二人称（you）第三人称（He,She,they,it所有的名字 名称） 单数（一个人或事物） 复数（两个或两个以上的人或事物）第三人称单数（第三方的单个的人或事物，除了 they）2）三单变化多数在动词（不是名词）后+ s eg: play plays like likes（1）直接在动词词尾加-s.ask-asks work-works get-gets stay-stays（2） 以字母s, x, ch,

2、 sh或o结尾的动词，在词尾直接加-es.watch-watches wish-wishes fix-fixesdo-doesgo-goes pass-passes（3）以辅音字母加-y”结尾的动词，要先变y为i再加-es.（辅音字母：除 a,e,i,o,u这5个元音字母外的21个字母都是辅音字母；元音字母力卩-y： stay-stays play-plays say-says buy-buys辅音字母力卩-y:try-tries study-studies cry-cries fly-flies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 da

3、y, sometimes, at ,on Sun day usually, once a week I leave home for school at 7 every morning.2, 客观真理，客观存在，科学事实。The earth goes around the sun.3，表示格言或警句中。Practice makes perfect.熟能生巧。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.4, 现在时刻的状态、能力、性格、个性。Miss wang writes

4、good En glish but does not speak well.5，在某些以here,there开头的句子中，用一般现在时表示正在发生的动作。eg. Here comes a bus公交车来了注：与一般现在时连用的时间状语（表示时间的词或词组）（1）表示频率的副词： always,ofte n, usually,sometimes.（2）时间状语： on Sun days,every day ,every morning ,every year.（3）表示频率的词组： once a year,three times a week.动词有三种：实义动词，be动词，情态动词（初一未涉及

5、）5, 一般现在时中，当主语是第三人称单数，动词是实义动词（1）动词变相应的第三人称单数形式（2）肯定句主语+动词s+其它eg.（2011） Bill often gives money to the poor.（3）否定句主语+does n't+动词原形+其它eg. Bill often doesn'give money to the poor.（4）一般疑问句Does+主语+动词原形+其它eg. Does bill ofte n give money to the poor.肯定回答 Yes，主语 +does（Yes,he does）（6）否定回答 No，主语 +doesn

6、't（No,he does'）6, 当主语不是第三人称单数时（动词没有三单变化），动词是实义动词（1）肯定句 主语+动词原形+其它eg.l want to marry you.（2）否定句 主语+don't+动词原形+其它eg.I don 'wa nt to marry you.（3）般疑问句 Do+主语+动词原形+其它eg.Do you want to marry me?肯定回答Yes,主语+do（Yes,I do.）否定回答 No，主语 +don't（No,l don'.）be动词的一般现在时有三种形式，即：am, is, are 。1. 如

7、果主语是第一人称I时，be动词用am。Eg.肯定句：I am a stude nt.我是一名学生。否定句： am not一般疑问句：Am i肯定 / 否定回答：Yes,i am. No i am not.2. 如果主语是you （你，你们）,they （他们，它们，她们）或名词复数 （两 个以上的人或物）时，be动词必须用are。如：肯定句，否定句，一般疑问句及肯定、否定回答You are my good frie nd.Tom and Lily are my good frie nds.They are my good frie nds.are 与主语还可缩写。如： We are= We&#

8、39;re ， They are =They're, You are = You're。而 are 与 not 可缩写成 aren't。如：They aren't students.他们不是学生。但是 am与not不能缩写。3. 如果主语是单数名词、不可数名词或单数第三人称代词（ he, she, it）时，be 动词用is。肯定句/否定句/一般疑问句及肯定、否定的回答如:My mother is a teacher. 我的妈妈是一名老师。He is a stude nt.他是一名学生。is 也可与主语缩写，如:He is = He's, My moth

9、er is = My mother's 等。但是 This is 不可缩写。而is与not可缩写成isn't。如:This isn't a book.这不是一本书。三、课堂练习巩固1,主语为第三人称单数肯定句： Hegets（get） up at six o ' clock.否定句：doesn ' t ,get一般疑问句：Does he get up at six o ' clock.（肯定，否定回答）2，主语为第一人称I_get_（get）up at six o ' clock.否定句：I don ' t get up at s

10、ix o ' clock.一般疑问句：Do you get up at six o ' clock.（肯定，否定回答）四、课堂强化练习（一）单项选择题1，The picturenice.A. looks B. is looked C. look D. is look ing2，Shedown and soon falls asleep.A. live B. la in C. laid D. sits3，The teacherus to come to school on time.A. ask B. ask ing C. asks D. asked4， Joh n always

11、others.A. help B. helpi ng C. helps D. to help5. Hefor eight hours every day.A. working B. to work C. works D. worked6. You ' d betterat home andyour homework.A. to stay, do B. stay, do C. to stay, to do D. stay, to do7. He sits dow n anda rest.A. hav ing B. have C. to have D. has8. Un cle Wang

12、n evera cake.A. make B. to make C. maki ng D. makes(二)句子改错1. Is your brother speak En glish?2. Does he likes going fish ing?3. He likes play games after class.4. Mr. Wu teachs us En glish.5. She don ' t do her homework every evening.五、课后练习(一) 用动词的适当形式填空1. She(go) to school at seveno' clock.2

13、. It ' s 6 o' clock. They are (eat) supper.3. He usuallyup at 17:00.(get )4. She(live) in Beiji ng.5. Amy(be) here just now.6. (be)there a flyon the table just now?7. My father(watch) TV every eve ning .8. My father(make) toys these days.9. Amy(read) English every day10. Che n Jie sometimes(

14、go)to the park with hersister.(二) 选择填空1 . I wanthomework now.A. doingB. to do C. to do myD. do my2. It's time.A. go to school B. play games C. to go home D. to do my homeworks3. youthe blackboard? Yes, I am.A. Can, clea n B. Am, clea ning C. Are, clea ning D. Doclea n4. go and help her.A. Let

15、9;s me B. Let's us C. Let's D. Let's to5. What are they doing? They arethings away.A. put B. puti ngC. putt ing D. carry6. Do they have a new car? Yes,.A .they are B.they haveC. they don'tD. they do107. He ofte nsupper at 6:00 in the eve ning.A. have B. hasc. is hav ingD. is eati ng8

16、. It ' s 6 o ' clock in the morning. He A. get up B. gets up C. is geti ng up D. is gett ing up9. What are you doing? I ' mTV.A. watch B. watches C. to watch D. watch ing10. Weany Chin ese classes on Friday.D. are haveA. are havingB. aren ' t having C. don ' t have11. Toman En gl

17、ish class now.A. is hav ing B. has C. hav ing D. have12. Are you play ing basketball? No, we.A. isn 't B. aren ' t C. not D. don ' t13. Liste n! The girlin the room.A. sings B. singing C. is singing D. are singing14. The boy isto his teacher.A. say ing B. speak ing C. talki ng D. telli n

18、g(三) 用括号内动词的适当形式填空。1. He ofte n(have) dinner at home.2. Dan iel and Tommy(be) in Class One.3. We(not watch) TV on Mo nday.4. Nick(not go) to the zoo on Sun day.5. they(like) the World Cup?6. What they often(do) on Saturdays?7. your pare nts(read) n ewspapers every day?8. The girl(teach) us En glish on Sun days.9. She and I(take) a walk together every eve ning.10. There(be) some water in the bottle.11. Mike(like) cooki ng.12. They(have) the same hobby.13. My aunt(look) after her baby carefully.14. Y