一般现在时的概念和构成
一般现在时
★一般现在时1.特征词：often、usually、always、sometimes、never、seldom、every+时间2.构成：①主语是第一第二人称及复数形式：人/物+动词原形，否定形式：人/物+don’t+动词原形I go/don’t go to school on time every day.②第三人称单数（he/she/it以及一个人/物）：人/物+动词+词尾s/es，否定形式：人/物+doesn’t+动词原形The cat eats/doesn’t eat a fish every day.3.动词变化：①一般情况：动词后加s、es：looks②以s/x/sh/ch/o结尾在词尾加es：watches③以辅音字母y结尾i，把y改为i,加上es：flies④特殊形式：do-does have-has4.提问：Do/Does……+动词原形……？Yes，……do/does. No ,……don’t/doesn’t.★现在进行时1.标志词：now、look、look at、listen、listen to、It’s+时间2. 用法：①现在正在进行或发生的动作例：I am reading an English book now. 我现在正在读一本英语书。
②当前一段时期内的活动或现阶段正在进行的动作例：They are living in Beijing these days. 他们这些天一直住在北京。
3. 现在进行时的构成：be +现在分词4．动词现在分词的构成①一般在动词尾加ing例：play →playing②以不发音字母e结尾的动词，去e加ing例：make →making③以重读闭音节结尾，末尾只有一个辅音字母，先双写这一辅音字母，再加ing例：put →putting④特殊be→ being lie→lying tie →tying die→ dying babysit→ babysitting 5．现在进行时态的肯定式、否定式、疑问式及简略回答（1）肯定式：be＋v-ing She is singing in the next room.（2）否定式：be＋not＋v-ing The students aren’t cleaning the room.（3）一般问句：be动词提前。
英语各种时态的概念和句型结构
英语各种时态的概念和句型结构一、一般现在时１、概念：表示经常性、习惯性的动作。
２、句型结构（１）be(am,is,are)动词陈述肯定句：主语+be(am,is,are)+其它。
陈述否定句：主语+be(am,is,are)+not+其它。
一般疑问句：Be(am,is,are)+主语+其它？特殊疑问句：疑问词+一般疑问句？Who are they?反意疑问句：肯定陈述句+be(am,is,are)+not+主语（相应的代词）？Tom is a doctor, isn’t he?否定陈述句，+be(am,is,are)+主语（相应的代词）？Tom isn’t a doctor , is he?（２）实义动词陈述肯定句：其他人称：主语+v.原形+其它。
We go to the beach every Sunday.第三人称单数：主语+v.s+其它。
Sally does her homework every day.陈述否定句：其他人称：主语+don’t+v.原形+其它。
We don’t go to the beach every Sunday.第三人称单数：主语+does n’t+v.原形+其它。
Sally doesn’t do her homework every day.一般疑问句：其他人称：Do+主语+v.原形+其它？Do we go to the beach every Sunday?第三人称单数：Does+主语+v.原形+其它？Does Sally do her homework every day?特殊疑问句：疑问词+一般疑问句？其他人称：Where do you go every Sunday?第三人称单数：What does Sally do every day?反意疑问句：肯定陈述句，+don’t/doesn’t+主语（相应的代词）？其他人称：We go to the beach every Sunday, don’t we?第三人称单数：Sally does her homework every day, doesn’t she?否定陈述句，+do/does+主语（相应的代词）？其他人称：We don’t go to the beach every Sunday , do we?第三人称单数：Sally doesn’t do her homework every day , does she?二、一般过去时１、概念：表示过去某个时间发生的动作或存在的状态。
1. 一般现在时的概念
一般现在时之勘阻及广创作：一般现在时暗示经常的、习惯性的举措或存在的状态.2. 一般现在时的构成一般现在时的构成主要有两种形式：(1)be型：句子的谓语动词只有be(am, is或are)：a.肯定句中, 只呈现be, 如： I am a student.我是一名学生.b.否定句中, 要在be后面加not, 如： She isn't a teacher.她不是教师.c.一般疑问句, 要将be放在句子开头(注意句首字母年夜写), 句尾用问号, 答语用Yes, 主语+be.或No, 主语+be+not.如：—Are you ready?—你准备好了吗? —Yes, I am.—是的, 我准备好了.(—No, I'm not.—不, 我没准备好.)(2)实义动词型：句中的谓语动词为实义动词(也叫行为动词)：a.肯定句中, 只呈现实义动词, 如：I get up in the morning.我早晨起床.b.否定句中, 要在实义动词前面加do(does)+not, do(does)作助动词, 自己无意义, 常与not缩写成don't(doesn't), 如： I don't like vegetables.我不喜欢蔬菜.c.一般疑问句, 要在句子开头加助动词Do(does), 句尾用问号, 简略答语用Yes, 主语+do(does).或No, 主语+do(does)+not.如：—Do you like oranges?—你喜欢桔子吗?—Yes, I do.—是的, 我喜欢.(—No, I don't.—不, 我不喜欢.)1) 经常性或习惯性的举措, 常与暗示频度的时间状语连用, 如：every…, sometimes, at…, on Sunday等.I leave home for school at 7 every morning. 我每天早上7点去上学.2) 客观真理, 客观存在, 科学事实.The earth moves around the sun. 地球绕着太阳.Shanghai lies in the east of China. 上海位于中国的东部.3) 暗示格言或警句中.Pride goes before a fall. 骄者必败.4) 现在时刻的状态、能力、性格、个性.Xiao Wang writes good English but does not speak well.小王的英语书面表达能力比口语好.【No. 1】一般现在时的界说及构成一般现在时暗示现在经常反复发生的举措、存在的状态或习惯性的举措.构成:主语+动词原形+宾语一般现在时用行为动词的原形, 但第三人称双数作主语时, 动词要用第三人称双数形式.（一般的动词词尾+S.以sh/ch/ss/x结尾的词+es.以辅音字母Y 结尾的把Y酿成i再+es.辅音字母+o结尾的+es.特殊变动：have 酿成has)【No. 2】一般现在时的应用(1)在实际应用中, 一般现在时常与以下时间状语联用：always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays ……例句：He usually plays football on Sundays.一般现在时练习一.用词的适当形式填空.1.What time_________ his father_________(do) the work?2.He _________(get) up at five o’clock.3.__________ you _________(brush) your teeth every morning.4.What ________ ( do ) he usually ________( do ) after school?5.Tom ________ ( study ) English, Chinese, Maths, Science and Art at school.6. Kitty sometimes __________(go) to the park with his sister.7.At eight at night, she __________( watch ) TV with her parents.8. ________ Mike________( read ) English every day?9.How many lessons________ your classmates______( have ) on Monday?10.We often___________ ( play ) football in the playground.二．选择( ) 1. _____ you have a book?A. DoB. AreC. IsD. Have( )2. They _________ on a farm.A. workingB. is workC. workD. is worked( ) 3. Does Peter like to watch TV?__________.A. Yes, he likeB. No, he doesn’tC. Yes, he’d likeD. No, he likes()4. She doesn’t __________ her homework in the afternoon.A. doingB. to doC. doesD. do( )5. How ____________ Mr. Brown ___________ to America?A. do,goB. is,goC. does,goD. does,goes( )6. Where’s my camera? I____________ it.A. am not findingB. am not seeingC. can’t findD. can’t look at( )7. How ___________ he go to work?He ___________ to work by bike.A. does ;goB. do;goesC. do ;goD. does;goes( )8. ______ you usually late for school?No, _____________.A. Do ; I amB. Does ;notC. Are ; I’m notD. Are ;I aren’t( )9. _____ she _____ home at six every day?A. Is , leaveB. Does , leaveC. Is , leavesD. Does , left( )10. Mr. Yang ____________ English this term.A. teaches ourB. teaches usC. teachs usD. teach our三．按要求完成句子1.Tom does his homework at home.否定句:_________________________________________________ 一般疑问句:_________________________________________________2.She has a lot of work to do this week.(改一般疑问句)_____________________3.We have a big TV set in our house.(改为否定句)_____________________4.Does she have any English-Chinese dictionary?(作否定回答)_____________________5.We have some nice pictures.(主语改为 he)_____________________现在进行时的讲解与练习.可用来暗示现在进行时的时间状语, 经常使用的有：now, this week, at this moment, right now 等；或者告诉你一个准确的现在时间, 或者用look, listen（经常使用于句子的开头, 暗示提醒听者注意正在发生的事情）（一）基本用法：（1）暗示（说话瞬间）正在进行或发生的举措.I’m visiting my friends now.也可暗示以后一段时间内的活动或现阶段正在进行的举措或存在的状态.He is always working hard.他总是非常努力地工作.(暗示赞扬)（2）谓语构成：be (am/ is/ are)＋v-ing （动词的现在分词）【注意】be动词要与主语的人称和数坚持一致.如：I’m watching TV now. 我现在正在看电视.They’re playing football. 他们正在踢足球.（3）现在分词的构成.a.一般情况下在动词词尾加ing.go→going ask （问, 询问）→asking look→lookingb.以不发音的e结尾的动词, 去失落e加ing.have →having take→taking make（做, 制造）→making write（写）→writingc.以一个辅音字母结尾的重读闭音节, 双写最后一个字母, 再加-ing.get→getting sit（坐）→sitting put（放）→putting run（跑）→runningswim→swim ming begin（开始）→beginning shop→shoppingd.特殊形式 lie-lying die-dying（四）现在进行时态的肯定式、否定式、疑问式及简略回答.（1）肯定式：主语+be＋v-ing +其他He is running. 他正在跑.The students are cleaning the room now .（2）否定式：主语+be＋not＋v-ing +其他He is not running.The students aren’t cleaning the room now. 这些学生现在没有在清扫房间.（3）一般问句：be动词提前.“Be+主语+v-ing+其他？”肯定答语Yes, 主语＋be.否定答语No, 主语＋be not.Is he running? Yes, he is. No, he isn’t.Are The students cleaning the room now? Yes, they are. No, they ar en’t.（4）特殊问句式：“疑问词+be ＋主语＋v-ing＋其他？”a. 对谓语动词进行提问的：What＋be ＋主语＋doing＋其他？What is the old man doing under the tree? 那个老人正在树下面做什么呢？b. 对其他成分进行提问的, 疑问词＋一般疑问句？Where is the boy swimming? 那个男孩正在哪里游泳？Who is she waiting for? 她正在等谁呢？五、现在进行时与一般现在时的区别（一）现在进行时暗示举措的暂时性, 而一般现在时暗示举措的习惯性和经常性I am watching TV now. （暂时性）我现在在看电视.I watch TV every day. （经常性）我每天都看电视.（二）现在进行时可暗示长久性举措, 而一般现在时暗示长久性举措.Lucy is living in Beijing.（短时间居住）露西暂时住在北京. Lucy lives in Beijing. （长久性居住）露西在北京居住或生活.（三）现在进行时暗示的举措可带有感情色彩, 而一般现在时所表述的举措通常是事实.You’re always forgetting the most important things. （责备）你总是爱忘记最重要的事情.He is always helping others. （赞扬）他一直都在帮手他人.He often helps others. （事实）他经常帮手他人.（四）有些动词不能用进行时, know, understand, love, like, hate, wish, want, think, hope, have, believe, agree, hear, see, notice.这些动词通经常使用一般现在时暗示说话时发生的举措.1) 暗示“拥有”的动词.如have (has) 等.例句：I have a nice bike now. (我现在有一辆漂亮的自行车.)不能说成: I am having a nice bike now.2) 有些暗示感觉的感官动词.如：see, find, look (看起来), hear (听见)等.例句：We see him. (我们看见他.)不能说成：We are seeing him.可是, 有些暗示感觉的动词, 如：listen to, look at 等可用现在进行时.如：They are listening to the teacher. (他们在听老师讲课.)3) 暗示“喜欢”“厌恶”的动词.如：like, love, hate (讨厌)等.例句：We love our country. (我们热爱祖国.)不成说: We are loving our country.4) 暗示知识或脑力的动词.如：think, know, forget等.例句：I think you are right. (我认为你是对的.)不能说成：I am thinking you are right.5) 暗示状态的be动词“是”.例句：She is at home. (她在家.)不能说成：She is being at home.6) 暗示“希望”、“愿望”、“心愿”等的动词.如：want 等词.例句：I want to see her now. (我现在就想见到她.)不能说成：I am wanting to see her now.【典范例题】一、用括号内所给单词的适当形式填空.1. Look! There _____(be) a lot of people over there. What _______they __________ (do) now?2. —What __________ your mother __________ (do)? —She is a teacher.3. It __________ (rain) heavily outside now. You must stay at home.4. Don’t sing. The b aby __________(sleep).5. My brother __________ (not like) playing basketball, but he ______ (like) playing football.6. —What _________ you usually _________ (do) on Sunday?—I usually _________ (stay) at home and _________ (do)my homework.7. Listen! The girls _________ (sing) in the next room.8. My sister _________ (want) to be a teacher.9. It’s seven o’clock now. The Greens _________ (have) supper.10. He often _________ (swim) on Sundays. Look! He_________ (swim) at the pool.二、单项选择1. I want _________ homework now.A. doingB. to doC. to domy D. do my2. It’s time _________.A. go to schoolB. play gamesC. to go homeD. to do my homeworks3. The boy is _________ to his teacher.A. sayingB. speakingC. talkingD. telling4. I’m _________ a book in the room.A. watchingB. seeingC. readingD. looking5. Where _________ he _________ from?A. is, comeB. do, comeC.does, come D. is, from6. Do they have a new car? Yes, _________.A. they areB. they haveC. theydon’t D. they do7. He often _________ supper at 6:00 in the evening.A. haveB. hasC. ishaving D. is eating8. It’s 6 o’clock in the morning. He _________.A. get upB. gets upC. isgeting up D. is getting up9. What are you doing? I’m _________ TV.A. watchB. watchesC. to watchD. watching10. We _________ any Chinese classes on Friday.A. are havingB. aren’t havingC.don’t have D. are have11. Tom _________ an English class now.A. is havingB. hasC. havingD. have12. Are you playing basketball? No, we _________.A. isn’tB. aren’tC. notD. don’t三、按要求改写句子1. The boy is playing basketball.否定句：____________________________一般疑问句：_________________________肯定回答：__________________________否定回答：__________________________对“The boy”提问：___________________2. Mrs. White is watching TV.（划线部份提问）______________________________________3. They are waiting for you at the library.（就划线部份提问）_____________________________________4. they are doing housework .(分别改成一般疑问句和否定句)___________________________________________________________________________5. The students are cleaning the classroom . ( 改一般疑问句并作肯定和否定回答)___________________________________________________________________________一般现在时和现在进行时综合练习一、写出下列动词的第三人称双数形式1.work________ read__________ clean_________write_______2.teach________ wash_________ guess_________watch________3. go__________ do___________ photo__________4.study_________ fly_________cry__________play_________5. have__________二、写出下列动词的现在分词形式1.work________ sing_________play__________study________2. dance_________ have________write__________take________3. run________ sit________ shop__________swim_________三、选择题练习1. Who _____ over there now?A. singingB. are singC. is singingD. sing2. It’s eight o’clock. The students _____ an English class.A. haveB. havingC. is havingD. are having3. Listen! The baby _____ in the next room.A. cryingB. criedC. is cryingD. cries4. Look! The twins _____ new sweaters.A. are wearingB. wearingC. are wearD. is wearing5. Don’t talk here. Grandparents _____.A. is sleepingB. are sleepingC. sleepingD. sleep6. Tom is a worker. He _____ in a factory. His sisters_____ in a hospital.A. work/ workB. works/ workC. work/ works7. Who _____ English best in your class?A. speakB. speaksC. speaking8. Mrs Read _____ the windows every day.A. is cleaningB. cleanC. cleans9. We _____ music and often _____ to music.A. like/ listenB. likes/ listensC. like/ are listening10. She _____ up at six in the morning.A. getB. getsC. getting11. On Sunday he sometimes _____ his clothes and sometimes _____ some shopping.A. wash/ doB. is washing/ is doingC. washes/ does12. The twins usually _____ milk and bread for breakfast, but Jim _____ some coffee for it.A. have/ haveB. have/ hasC. has/ have13．I want____homework now.A. doingB. to doC. to do myD. do my 14．It's time______.A. go to schoolB. play gamesC. to go homeD. to do my homeworks15．____you____the blackboard?Yes,I am.A.Can, cleanB. Am, cleaningC. Are, cleaningD. Do, clean16．______go and help her.A. Let's meB.Let's usC.Let'sD. Let's to17. Do they have a new car?Yes,_____.A.they areB.they haveC.they don'tD.they do18. He often _________ supper at 6:00 in the evening.A. haveB. hasC. is havingD. is eating19. It’s 6 o’clock in the morning. He ___________.A. get upB. gets upC. is geting upD. is getting up20. What are you doing? I’m _____TV.A. watchB. watchesC. to watchD. watching21. We _____________ any Chinese classes on Friday.A. are havin gB. aren’t havingC. don’t haveD. have22. Tom _______ an English class now.A. is havingB. hasC. havingD. have23. Are you playing basketball? No, we ___________.A. isn’tB. aren’tC. notD. don’t24. Listen! The girl _____________ in the room.A. singsB. singingC. is singingD. are singing25. Where _________ he _________ from?A. is, comeB. do, comeC. does, comeD. is , from26. Listen! They ________ in the next room.A. singB. is singingC. are singingD. were singing27. Lucy is always busy. She _____ only five hours every day.A. is sleepingB. will sleepC. would sleepD. sleeps28. It’s eight o’clock. The students ______ an English class.A. haveB. havingC. is havingD.are having29. ---Is your father a doctor?---Yes, he is. He _______ in Town Hospital.A. has workedB. is workingC. worksD. worked30. ---Excuse me, where is Jim?---Oh, he ______ dumplings in the kitchen.A. makesB. will makeC. is makingD. made31. Don’t turn on the TV. Grandma _______ now.A. is sleepingB. will sleepC. sleptD. sleeps32. ---______ you ______ a book?---Yes, I am.A. Do; readB. Are; readC. Are; readingD. Are; looking33. Sometimes she _______ in the day, but now she is________.A. works; workingB. working; workC. work; workingD. work; work34. Kate _________, and the others _________.A. sing; listenB. is singing; is listeningC. sing; are listeningD. is singing; are listening35. ---Tom _____ the piano in the room.---Please ask him to come here.A. playB. playsC. playedD. is playing四、用所给词的适当形式填空1. My father always __________(come) back from work very late.2. The teacher is busy. He __________ (sleep) six hours a day.3. Listen! Joan _________(sing) in the classroom. She often __________ (sing) there.4. __________ your brother __________(know) Japanese?5. Where __________ you __________ (have) lunch every day?6. The girl ______(like) wearing a skirt. Look! She________(wear) a red skirt today.7. What are you _________(do) now? I ___________(eat) bread.8. It’s nine o’clock. My father______________(work) in the office.9. Look, the boy____________(put) the rubbish(垃圾) into the bin(垃圾箱).10. __________he__________(clean) the classroom?No, he isn’t. He____________(play).11. Where is Mark? He___________(run) on the playground.12. We often _____ (play) in the playground.13. _____ you _____ (brush) your teeth every morning?14. What ______he usually______ (do) after school?15. Danny___________(study) English, Chinese, Maths, Science and Art at school.16. Mike sometimes _______(go) to the park with his sister.17. At eight at night, she _______ (watch) TV with his parents.18. _____ Mike _______(read) English every day?19. How many lessons _____ your classmates ______(have) on Monday?20. What time ______ his mother _____(do) the housework?五．把一般现在时改写成现在进行时.1. He plays basketball every afternoon.He ______ ___________ basketball now.2. My parents often make cakes for me.创作时间：二零二一年六月三十日My parents ______ __________ cakes for me now.3. They must clean the bedroom once a week. Look! They ______ __________ the bedroom.4. The students read English everyday.The students ______ ________ English right now.5. The monkey often jumps up and down.Look ! The monkey ______ _________ up and down.创作时间：二零二一年六月三十日。
一般现在时与现在进行时比较
一般现在时与现在进行时比较I.【概念不同】1.一般现在时：一般现在时表示经常的、习惯性的动作或现在的特征、状态。
2.现在进行时：现在进行时表示说话时（瞬间）正在进行的动作或目前这一阶段一直持续的状态。
II.【构成不同】1.一般现在时：一般现在时的构成有以下几种类型：1)be动词型：be 在肯定句中的形式为：am, is 或are; 在否定句中的形式为: am not, is not / isn't或are not / aren't; 在一般疑问句中，am, is 或are要放在句子开头，简略答语为：Yes, 主语+ am/ is / are. 或No, 主语+ am not / isn't / aren't.例如：—Are you a teacher? 你是一名教师吗？2). 情态动词型：句子中的谓语动词由“情态动词+ 动词原形”构成。
例如：I can sing in English. 我可以用英语唱歌。
3)祈使句型：无论是肯定形式的祈使句，还是否定形式的祈使句，通常用一般现在时。
例如：Sit down, pl ease. 请坐。
Don't worry. 别担心。
4) 实义（行为）动词型：在肯定句中，句子的谓语动词是to do. 他有一些重要的事情要做。
在否定句中，句子的谓语动词由“动词do / don't或does / doesn't + 动词原形”构成。
例如：H e doesn't watch TV in the evening. 他晚上不看电视。
在一般疑问句中，句子的谓语动词仍由“助动词do或does ... + 动词原形”构成。
例如：Does Jack l eave hom e at seven? 杰克是7点离开家的吗？2.现在进行时:现在进行时由“助动词be ( am, is ／are ) + 动词的现在分词”构成。
现在分词的构成，1.)在动词原形上加—ing2.)动词以单个e 结尾去掉e, 加ing love _loving3) 动词以ee结尾直接加ing see _ seeing4) 辅音字母双写，再加ing hit_-hitting run_runningstop_stoppingbeggin- beginning5)以y 结尾的动词直接加ing carry-carrying enjoyenjoyingIII.【时间状语不同】1.常与一般现在时连用的时间状语有：som etim es, usually, never, always, often; every day / w eek / m onth / year / ... ; on Sunday (s) / m onday (s) /... ; at seven forty; in the m orning / afternoon / evening; now; today等等。
英语十一种主要时态总结
英语十一种主要时态总结1、一般现在时：概念：经常、反复发生的动作或行为及现在的某种状况。
时间状语：always, usually, often, sometimes, every week (day, year, month…), once a week, etc.基本结构：①be动词；②行为动词否定形式：①am/is/are+not;②此时态的谓语动词若为行为动词，则在其前加don't,如主语为第三人称单数，则用doesn't，同时还原行为动词。
一般疑问句：①把be动词放于句首；②用助动词do提问，如主语为第三人称单数，则用does，同时，还原行为动词。
一般现在时由动词原形表示，但第三人称单数后要加词尾-s，be 和have要根据人称的变化使用特殊的形式。
一般现在时主要表示经常性的动作或存在的状态，还可用来表示普遍真理。
The Yangtze rises in Qinghai. 长江发源于青海。
Actions speak louder than words. 行动胜于言辞。
We have friends all over the world. 我们的朋友遍天下。
2、一般过去时：概念：过去某个时间里发生的动作或状态；过去习惯性、经常性的动作、行为。
时间状语：ago, yesterday, the day before yesterday, last week(year, night, month…), in 1989, just now, at the age of 5, one day, long long ago, once upon a time, etc.基本结构：①be动词；②行为动词否定形式：①was/were+not;②在行为动词前加didn't，同时还原行为动词。
一般疑问句：①was或were放于句首；②用助动词do的过去式did 提问，同时还原行为动词。
一般现在时
一般现在时一般现在时，是一种英语语法形式。
表示通常性、规律性、习惯性、真理性的动作或状态，或者动作有时间规律发生的事件的一种时间状态。
在英语语法中，“时“指动作发生的时间，”态“指动作的样子和状态。
中文名一般现在时外文名Simple present属性英语语法拼音yì bān xiàn zài shí目录4. 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。
一般现在时的分析具体运用1. 表示经常的或习惯性的动作，常与表示频率的时间状语连用。
时间状语：always，usually，every morning/night/evening/day/week/year，often，sometimes，occasionally，from time to time，twice a week，rarely，seldom，once a month，hardly，ever，never.e.g. I leave home for school at 7：00 every morning.我每天早上7点左右离开家去学校。
2. 描述主语的状态、性质、特征、能力等，目的是为了“描述现阶段的动作或者状态。
e.g. I don't want so much.我不想要太多。
Wang An writes good English but doesn't speak well.王安英语写得很好但是说的不好比较：Now I put the sugar in the cup.现在我把一些糖放杯子里面。
I am doing my homework now.现在我正在写我的作业。
第一句用一般现在时，用于操作演示或指导说明的示范性动作，表示言行的瞬间动作。
再如：Now watch me，I switch on the current and stand back. 第二句中的now是进行时的标志，表示正在进行的动作的客观状况，所以后句用现在进行时。
一般现在时详解
一：一般现在时：表示经常性的事情。
时间状语：often经常, usually通常, always总是， every每个, sometimes有时， at…在几点钟只有第三人称单数用动词三单，其余动词均用原形三单变化：多数在动词后加s play—plays like—likes 以s，x，sh，ch，o 结尾的动词加es go—goes wash--washes 以辅音字母加y结尾，把y改i再加es fly—flies 二：基本结构：动词原形（如主语为第三人称单数，动词上要改为第三人称单数形式）三：否定形式：am/is/are+not;此时态的谓语动词若为行为动词，则在其前加don't,如主语为第三人称单数，则用doesn't，同时还原行为动词。
四：一般疑问句：把be动词放于句首；用助动词do提问，如主语为第三人称单数，则用does，同时，还原行为动词。
五：但是，动词to be 和to have 的一般现在时的形式特殊如下：一般动词的词形变化 To be 的词形变化 To have 的词形变化I know it I am a student I have a pen.You know it. You are a student You have a penHe (she) knows it. He (she) is a student. He (she)has a pen.We (you,they) know it. We (you,they) are students. We (you,they) have pens.3、动词A）第三人称单数当动词是第三人称单数时，动词应该像名词的单数变动词那样加s，如下：一）一般在词后加s。
如：comes, spells, waits, talks, sees, dances, trains二）在x, sh, ch, s, tch后加es。
如：watches, washes, wishes, finishes三）1）以辅音字母加y结尾的变y为i再加es。
英语动词的现在时
英语动词的现在时摘要本文主要介绍了英语动词的现在时的概念，结构，用法和例子。
英语动词的现在时有四种形式：一般现在时，现在进行时，现在完成时和现在完成进行时。
每种形式都有自己的特点和规则，需要注意动词的变化和标志词的使用。
本文通过表格和句子来对比和解释这四种形式，帮助读者理解和掌握英语动词的现在时。
一般现在时一般现在时的概念一般现在时表示经常性，习惯性，规律性或真理性的动作或状态，或者动作有时间规律发生的事件。
一般现在时的结构一般现在时根据谓语动词的不同，可以分为以下三种结构：结构例子主语 + be + 其他I am a student.主语 + 行为动词（原形或第三人称单数）+ 其他She has a little brother.主语 + 情态动词 + 动词原形 + 其他I can finish my homework.一般现在时的用法一般现在时主要用于以下几种情况：表示客观事实或自然真理。
例如：The earth goes around the sun. 地球围绕太阳转。
表示经常发生或习惯性的动作。
通常与表示频率或时间段的副词连用，如always, usually, often, sometimes, never, every day, once a week等。
例如：I get up at 7:00 every day. 我每天7点起床。
She often plays tennis on weekends. 她经常周末打网球。
表示个人特征，喜好，感情等状态。
例如：He likes swimming. 他喜欢游泳。
She is beautiful. 她很漂亮。
表示将来发生的计划或安排。
通常与表示将来时间的副词或短语连用，如tomorrow, next week, in an hour等。
例如：I am leaving for Beijing tomorrow. 我明天去北京。
She has a meeting at 10:00. 她10点有一个会议。
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一般现在时的概念和构成
概念：一般现在时表示经常性、习惯性的动作或存在的状态。
构成：如果主语是第一、二、三人称复数，谓语由动词原形构成，如果主语是第三人称单数，谓语动词要变成第三人称单数形式。
动词第三人称单数的变化规则
时间标志：
当句子中出现下列表示时间的词时，且句子表示经常性、习惯性的动作或状态，一般情况下使用一般现在时。
often经常sometimes有时候every day每天every week每周every morning每天早晨never从来不on weekends在周末
例如：
W e usually go to schooll at 7 o’clock.我们经常七点起床。
He often goes swimming with his friends.他经常和他的朋友们去游泳。
My father takes me to the park on weekends.我爸爸经常在周末带我去公园。
一般现在时的句式转换：
做关于一般现在时的句型转换题，关键是找到句子中的实意动词，如果实意动词是原形，则一般疑问句提前Do否定用don’t+动词原形，如果句子中的实意动词是第三人称单数形式，一般疑问句提前Does，否定句用doesn’t+动词原形
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