一般现在时的讲解及用法

1、 一般现在时的讲解及用法一、 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

2、, ch, sh或o结尾的动词，在词尾直接加-es.watch-watches wish-wishes fix-fixes do-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；元音字母加-y：stay-stays play-plays say-says buy-buys辅音字母加-y:try-tries study-studies cry-cries fly-flies二、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：

3、 every day, sometimes,at, on Sunday，usually,once a weekI 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 write

4、s good English 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,often,usually,sometimes.（2） 时间状语：on Sundays,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+doesnt+动词原形+其它eg. Bill often doesnt give money to the poor.（4） 一般疑问句Does+主语+动词原形+其它eg. Does bill often give money to the poor.肯定回答 Yes，主语+does(Yes,he does)（6）否定回答 No，主语+doesnt(No,he doe

6、snt)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 want to marry you.（2） 否定句 主语+dont+动词原形+其它 dont want to marry you.（3） 一般疑问句 Do+主语+动词原形+其它 you want to marry me肯定回答Yes,主语+do(Yes,I do.)否定回答No，主语+dont(No,I dont.)be动词的一般现在时有三种形式，即：am, is, are。1. 如果主语是第一人称I时，be动词用am。Eg.肯定句：I am a student. 我是一名学生。否定句

7、： 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 friend. Tom and Lily are my good friends. They are my good friends. are与主语还可缩写。如： We are= Were， They are =Theyre, You are = Youre。而are与 not可缩写成are

8、nt。如：They arent 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 student. 他是一名学生。is也可与主语缩写,如: He is = Hes, My mother is = My mothers等。但是This is不可缩写。而is与not可缩写成 isnt。如:This isnt a book. 这不是一本书。三、课堂练习巩固1,

9、主语为第三人称单数 肯定句：He _gets_(get) up at six oclock. 否定句：doesnt ,get 一般疑问句：Does he get up at six oclock.(肯定，否定回答）2，主语为第一人称I_get_(get)up at six oclock. 否定句：I dont get up at six oclock.一般疑问句：Do you get up at six oclock.（肯定，否定回答）四、课堂强化练习（1） 单项选择题1，The picture _ nice.A. looks B. is looked C. look D. is lookin

10、g2，She _ down and soon falls asleep.A. live B. lain C. laid D. sits3，The teacher _us to come to school on time.A. ask B. asking C. asks D. asked4， John always _ others.A. help B. helping C. helps D. to help5. He _for eight hours every day.A. working B. to work C. works D. worked6. Youd better _ at h

11、ome and _ your homework.A. to stay, do B. stay, do C. to stay, to do D. stay, to do7. He sits down and _ a rest.A. having B. have C. to have D. has8. Uncle Wang never _ a cake.A. make B. to make C. making D. makes（2） 句子改错1. Is your brother speak English？2. Does he likes going fishing？3. He likes pla

12、y games after class.4. Mr. Wu teachs us English.5. She dont 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 seven oclock.2. Its 6 oclock. They are _ (eat) supper. 3. He usually _ up at 17:00.(get )4. She _ (live) in Beijing.5. Amy _ (be) here just now.6. _ (be)there a fly

13、on the table just now7. My father _ (watch) TV every evening .8. My father _ (make) toys these days.9_ Amy _ (read) English every day10. Chen Jie sometimes _(go)to the park with her sister.（二）选择填空1I want_homework now.A. doing B. to do C. to do my D. do my2Its time_.A. go to school B. play games C. t

14、o go home D. to do my homeworks3_ you_ the blackboard Yes, I am.A. Can, clean B. Am, cleaning C. Are, cleaning D. Doclean4_go and help her.A. Lets me B. Lets us C. Lets D. Lets to 5What are they doing They are_things away.A. put B. puting C. putting D. carry6Do they have a new car Yes,_.A .they are

15、have C. they dont D. they do7He often _ supper at 6:00 in the evening.A. have B. has c. is having D. is eating8. Its 6 oclock in the morning. He _. A. get up B. gets up C. is geting up D. is getting up9. What are you doing Im _ TV. A. watch B. watches C. to watch D. watching10. We _ any Chinese clas

16、ses on Friday. A. are having B. arent having C. dont have D. are have11. Tom _ an English class now. A. is having B. has C. having D. have12. Are you playing basketball No, we _.A. isnt B. arent C. not D. dont 13. Listen! The girl _ in the room.A. sings B. singing C. is singing D. are singing14. The

17、 boy is _ to his teacher.A. saying B. speaking C. talking D. telling（三）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 Satur

18、days 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)