现在进行时讲解
现在进行时的用法讲解
现在进行时的用法讲解以下是小编为大家整理的现在进行时的基本用法，希望能帮助大家了解现在进行时这个句型，提高英语水平。
现在进行时是英语中的一种常用时态，其结构为am/is/are+v-ing，用法如下：1.表示现在(说话的瞬间)正在进行或发生的动作。
We’re having an English class now. 我们正在上英语课。
I haven’t accepted his suggestion yet. I’m still considering it.我还没有接受他的建议，我正在考虑呢。
2.现在进行时与频度副词always，constantly，continually等连用，表示夸奖，埋怨等感情色彩，并不强调动作正在进行。
You are always doing well. 你总是干得很不错。
(带夸奖的口吻，称赞对方一贯的表现)She was always coming late. 她总是很晚才回家。
(带埋怨情绪，指责某人的一贯行径)3.表示当前一段时间内的活动或现阶段正在进行的动作，说话时并不一定进行。
The Chinese people are building socialism.中国人民正在建设社会主义。
Is my daughter working hard this term? 我女儿这学期学习努力吗?也可表示一个变化过程It is getting warmer and warmer in spring.春天，天气越来越暖和了。
She is finding that chemistry is much more difficult than biology.她逐渐感到化学比生物难多了。
4.现在进行时表示最近计划或安排要进行的动作，多用于个人计划，打算。
常用于这种用法的动词有go，come，leave，start，begin，arrive，return，take off等。
We are leaving for Beijing next Monday. 下星期一我们要去北京。
进行时态讲解
现在进行时一.现在进行时概念：现在进行时表示现在正在进行或发生的动作,也可表示当前一段时间内的活动或现阶段正在进行的动作;可用来表示现在进行时的,常用的有：now, this week, at this moment 等；或者告诉你一个准确的现在时间,或者用look, listen提醒听者注意正在发生的事;例如：They are playing basketball now.现在他们正在打篮球;Listen She is singing an English song.听,她正在唱英语歌;Look at the picture. The children are flying kites in the park.看这幅图;那些孩子正在公园放风筝;We are making model planes these days.这些天我们在做飞机模型;It's 6:30 now. I am getting up. 现在是6：30.我正在起床二. 现在进行时结构：B e动词＋Ving三.现在进行时几种句型用法：①陈述句肯定句主语＋beam, is, are+现在分词,如：I am reading English.我正在读英语; He is writing.他正在写字;You are running.你正在跑步;②一般疑问句BeAm, Is, Are+主语＋现在分词,如：1. -Are you singing 你正在唱歌吗-Yes, I am.是的,我在唱歌; -No, I'm not.不,我不在唱歌;2. -Is he she listening to music 他她在听音乐吗-Yes, he she is.是的,他她在听音乐;-No, he she isn't.不,他她不在听音乐;③特殊疑问句疑问词＋be am, is, are＋主语＋现在分词,如：1. -What are you doing 你正在干什么-I am doing my homework.我正在做作业;2. -What is he she doing 他她正在干什么-He She is riding a bike.他她正在骑自行车;④否定句主语＋beam, is, are＋not+现在分词I am no t reading English我不在读英语;四.动词加ing的变化规则1．一般情况下,直接加ing,如：cook-cooking2．以不发音的e结尾,去e加ing,如：make-making, taste-tasting3．重读闭音节结尾且词末只有一个辅音字母,双写末尾的辅音字母,再加ing,如：run-running, stop-stopping现在进行时基础专项练习：一、写出下列动词的现在分词：play________ sing ________ go_________ feed________ read________ eat write________ have_________ make__________ dance_______ live_________ ridelove_______ take_________ come ________ put_________cut run__________ swim _________ sit _______二、用所给的动词的正确形式填空：boy __________________ drawa picture now.2. Listen .Some girls _______________ singin the classroom .3. My mother _________________ cook some nice food now.4. What _____ you ______ do now5. Look . They _______________ have an English lesson .____________not ,water the flowers now.The girls ________________dance in the classroom .is our granddaughter doingShe _________listen to music.9. It’s 5 o’clock now. We _____________havesupper now.wash clothesYes ,she is.三、句型转换：1. They are doing housework .改成否定句__________________________________________________________2．The students are cleaning the classroom.改一般疑问句并作肯定和否定回答①_____________________________________②_________________ ③_________________3．I’m playing football in the playground .对划线部分提问_________________________________________________________________ 4．Tom is reading books in his study . 改为一般疑问句_________________________________________________________________5. The boy is playing basketball.对划线部分提问__________________________________________巩固提升一.填空题1．Mr Zheng read a book now.2. The rabbits jump now.3. Look Tom and John swim.4. My brother make a kite in his room now.5. Look The bus stop.6. It's 10:00 have an English class .7. Listen Someone come.8. They catch butterflies now.二、单项选择The twins_____their mother do the housework.A are wanting Bhelp Care helping Dare lookingthe birds doingThey are singing in a tree.AWho BWhat CHow DWhere3.你在干什么AWhat is you doing BWhat are you doCWhat are you doing DWhat do you doare_____their clothes.Amakeing Bputting Cput away Dputting onShe____in the classroom.Ais singing Bsing Cto sing Dis singJim______ his white shirt and brown trousers.Ais putting on Bwear Cput on Dis wearingyou eatingI’m eating______meat.AWhat,some BWhich,any CWhere,not DWhat,ain the do their homework.Aare watching Bcan't watching Cdon't watch Ddon't watchingchildren_____football.Ais playing Bare playing Cplay the Dplay aare flying kites.A他们喜欢放风筝. B他们在放风筝吗 C他们在放风筝.D他们常放风筝.is_____a new bike today.Ajumping Brunning Criding Dtaking三、完形填空Here are my favorite photos. 46 the first one, you can find it’s 47 . I’m wearing a T-shirt and sitting on the grass. The 48 oneis a photo of my family. I’m 49 computer games. My grandfather is playing erhu. My father is 50 a newspaper. My grandmother is talking about the TV show 51 my sister. And my mother is 52 the table.I love this photo very much. In the third one, there are two 53 . They are my friends, Tim and his brother. They are playing basketball. In the last one, I’m singing and my friends are dancing. 54 I see these photos, I’m very happy. They make me think of the happy 55 . I will keep the photos all my life.1. A In B At C For D About2. A day B night C summer D spring3. A first B second C third D fourth4. A going B doing C playing D reading5. A reading B seeing C looking at D writing6. A to B with C about D on7. A cleaning B sitting C buying D swimming8. A girls B boys C women D men9. A When B Where C Why D Howtime B age C hour D minute四、阅读理解We have twenty minutes’rest休息 between classes. Look Most of us are playing during the break课间time. Some students are on the playground. They are playing basketball. Oh A boy is running with the ball. And another is trying尽力to stop him. They look so cool. And there are some girls watching the game. Some students are in the classroom. They are talking. A few of them are reading and doing homework. Look A girlis looking at the birds in the tree in front of the classroom. She mustbe thinking of something interesting because she is smiling微笑.What are the teachers doingSome of them are working in the office. And some are talking with students. Everyone is doing his or her things, busy but happy1. Where are the students playing basketballA In front of the treeB In front of the classroomC On the playgroundD In the tree2. A girl is looking at the birds. She is .A happyB coolC interestingD exciting3. What are the teachers doingA Working or talking with studentsB Having a basketball gameC Playing with the studentsD Looking at the birds4. There are students in the classroom.A noB someC fewD a lot5. The passage is mainly主要about .A studentsB a basketball gameC break time activitiesD teachers过去进行时过去进行时表示过去某一时刻或者某段时间正在进行或发生的动作,常和表过去的时间状语连用,如：I was doing my homework at this time yesterday.昨天的这个时候我正在做作业;They were waiting for you yesterday.他们昨天一直在等你;过去进行时的构成：肯定形式：主语+was/were+V-ing否定形式：主语+was not wasn't/were not weren't+V-ing疑问形式：Was/Were+主语+V-ing;基本用法：1.过去进行时表示过去某一段时间或某一时刻正在进行的动作;常与之连用的时间状语有,at that time/moment, at this time yesterday last night/Sunday/week…, at+点钟+yesterdaylast night / Sunday…,when sb. did sth等时间状语从句,如：What were you doing at . yesterday 昨天晚上七点你在干什么I first met Mary three years ago. She was working at a radio shop at the time. 我第一次遇到玛丽是在三年前,当时她在一家无线电商店工作;I was cooking when she knocked at the door. 她敲门时我正在做饭;2. when后通常用表示暂短性动词,while后通常用表示持续性动词,因此它所引导的状语从句中,谓语动词常用进行时态,如：When the car exploded I was walking past it.= While I was walking past the car it exploded.用作并列连词时,主句常用进行时态,从句则用一般过去时,表示主句动作发生的过程中,另一个意想不到的动作发生了;如：I was walking in the street when someone called me. 我正在街上走时突然有人喊我;4. when作并列连词,表示“这时突然”之意时,第一个并列分句用过去进行时,when引导的并列分句用一般过去时;如：I was taking a walk when I met him. 我正在散步,突然遇见了他;We were playing outside when it began to rain. 我们正在外边玩,这时下起雨来了过去进行时巩固练习一、用动词的适当形式填空;1. While we __________ wait for the bus, a girl __________ run up to us.2. I __________ telephone a friend when Bob __________ come in.3. Jim __________ jump on the bus as it __________ move away.4. We __________ test the new machine when the electricity __________ go off.5. She __________ not want to stay in bed while the others ________________ all, work in the fields.6. While mother ________ put Cathy to bed, the door bell ________ ring.1. I ________ have my breakfast at half past six yesterday morning.2. Mary ________ go over her lessons from six to seven last night. John and peter _______do the same thing.3. What ________ you _________ do at that time We _________ watch TV.4. Was your father at home yesterday evening Yes ,he was. He _________ listen to the radio.5. They ________not make a model ship when I saw him.6. ________ they ________ have a meeting at 4 yesterday afternoonNo, they _________. They _________ clean the classroom.7. ______ it ______rain when you left school Yes, it ______. No, it _______8. What ________ your father ________ do when he was your age9. One day, Edison ________ wait for a train to arrive, and suddenly a little boy ran to the track轨道to play.10. He asked me if I _________ go fishing that afternoon.11. The three of them were in a hurry because their plane _________ leave in five minutes.12. In a letter, john told us that he ________ come to china next month.13. When the bell rang, jenny _______ wait in her seat.14. She _________ make her dress the whole afternoon.15. While my father ________ look through the evening paper, he suddenly ____ a cry.16. When I _______ come in the room, he _______ see me, for he _______ read something17. When we ________ arrive at the village, it ________ get dark and it ________ rain hard.18. I _________ not know you ________wait for me here.19. One day a little monkey ________ play in a tall tree. A mother crocodile鳄鱼________ look for food near the bank.20. What _________ your father ________ do yesterday eveningHe ________ study at the evening school.21. Later his parents found that he ________ sit on some eggs.22. When he knocked at the door, my aunt ________ cook23. The students _________ sing and ________ dance happily on the playground at that time.24. I ___________ write a letter when the door bell rang.25. We had no classes at that time. We __________ plant trees.二、选择题;1. I ______ cooked a meal when you _____ me.a. cooked, were ringingb. was cooking, rangc. was cooking, were ringingd. cooked, rang2. He said he _____ to draw a plane on the blackboard at that time.a. triesb. triedc. was tryingd. will try3. While she ______ TV, she ______ a sound outside the room.a. was watching, was hearingb. watched, was hearingc. watched, heardd. was watching, heard4. They _____ a football game from 7 to 9 last night.a. were watchingb. watchc. watchedd. are watching5. What book ____ you ______ when I ____ you at four yesterday afternoona. did, read, was seeingb. did, read, sawc. were, reading, sawd. were, reading, was seeing6. It was Friday evening. Mr and Mrs. Green _____ ready to fly to England.a. are gettingb. getc. were gettingd. got7. Lei Feng _____ always _____ of others when he ______ in the army.a. is, thinking, wasb. was, thinking, isc. did, think, isd. was, thinking, was8. A girl ______ my pen fall off the table when she _____ me.a. saw, passedb. was seeing, passedc. was seeing, passedd. was seeing, was passing9. We ____ for tom at ten last Sunday. He often kept us ______.a. were waiting, waitingb. were waiting, waitc. waited, waitingd. waited, wait10. He ____ his father on the farm the whole afternoon last Saturday.a. helpsb. would helpc. was helpingd. is helping11. While mother _______ some washing, I _____ a kite for Kate.a. did, madeb. was doing, madec. was doing, was makingd. did, was making12. “_______ you angry then”“they ______ too much noise.”a. are, were makingb. were, were makingc. are, maded. were, made13. He ____ some cooking at that time, so _____ mea. did, heardb. did, didn’t hearc. was doing, heardd. was doing, didn’t hear14. This time yesterday jack _____ his bike. He _____ TVa. repaired, didn’t watchb. was repairing, watchedc. repaired, watchedd. was repairing, wasn’t watching15. His parents wanted to know how he _____ on with his new classmates.a. was gettingb. getsc. is gettingd. will get三、翻译;1、昨天这个时候你们英语老师在做什么她在和一些家长谈话吗2、当我离开的时候他正在画一幅世界地图;3、当你看见他们的时候他们在干什么他们在打扫教室;4、那时二班的学生没在操场上踢足球,他们在打篮球;5、一天,母亲下班回家的时候,约翰在写给一个朋友写信;6、上周五一下午,学生们在干什么他们一直在往墙上贴海报;7、昨天这个时候,一些学生在植树,一些学生在给小树浇水;8、老师走进教室的时候,学生们正在谈论当天的新闻;9、老虎等猴子的时候,他听到一个声音;10、今天上午放学的时候在下雨吗是的,天正下着大雨;。
现在进行时讲解及练习
01概念表示正在发生的事情或动作，常和now，look，listen 连用。
eg：We are listening to music now.我们现在正在听音乐。
Listen!He is playing the piano.听！他正在弹钢琴现在进行时态。
02结构1．be +动词现在分词（即：动词-ing 形式），be +doing 是一个整体，不能分开。
2．be 随着主语的变化而变化，doing 的变化规则根据现在分词的变化规律来定。
03动词现在分词的构成规律1．一般情况下,在动词原形后直接加-ing；eg：work→workingdo→doingplay→playing2．以不发音字母e 结尾的动词，先去掉e，再加-ing；eg：dance→dancingcome→coming3．在重读闭音节（即：辅音＋元音＋辅音）的动词中，要先双写末尾的辅音字母，再加-ing；eg：get→getting shop→shoppingrun→running swim→swimming4．以ie结尾的重读闭音节词，将ie改成y再加ing。
eg：lie→lying die→dying04现在进行时的各种句式变化1．否定句方法：直接在be的后面加not。
eg：They are running.→They are not running.2．一般疑问句方法：直接把be放在主语的前面，其余位置不变。
eg：：They are running.→Are they runnin?3．特殊疑问句方法：如果就划线部分提问事情或动作时，用What…doing?eg：They are swimming in the sea now.→What are they doing in the sea now?—We are .B.watch TV A.watching TV C.watches TVD.to watch TV（）2.Look!The little boyin the rain.A.jumpsB.runC.is runningD.runson the（）3.The children areplayground.A.playingB.playC.sleepingD.play s（）5.Look!Emm an English class now.（）4.WeA.hasB.haveC.is havingD.are havingawith her sister.A.is swimming B.swims are is swimingD.swimmingC.（）1.—What are you doing now?05现在进行时态练习（（）10.Tom）6.—the girls dancing?—No,they.They are reading books.A.is;aren’tB.are;aren’tC.Are;aren’tD.Are;are（）7.—?—They are playing basketball.A.What are they doingB.Who are theyC.How old are theyD.Where are they（）8.Listen!Emma.A.C.sleepsswimsB.D.is singing is running（）9.Spring is .There are greens treesand beautiful flowers.ingB.goingeinges with a toycar now?——No,he isn’t.He is playing piano.A.Do;plays B.Is;playC.Is;playingD.Does;play【参考答案】ACADA CABAC。
《现在进行时》 讲义
《现在进行时》讲义一、现在进行时的定义和构成现在进行时表示正在进行的动作或存在的状态。
它的构成是“be 动词（am/is/are）＋动词的现在分词”。
比如：“I am reading a book”（我正在读一本书。
）在这个句子中，“am reading”就是现在进行时的结构，“am”是 be 动词，“reading”是动词“read”的现在分词形式。
二、现在进行时的基本用法1、表示此刻正在进行的动作这是现在进行时最常见的用法。
当我们想要描述此时此刻正在发生的事情时，就会用到现在进行时。
例如：“She is cooking dinner in the kitchen”（她正在厨房做晚饭。
）“ They are playing football on the playground”（他们正在操场上踢足球。
）2、表示现阶段正在进行的动作有时候，一个动作不是在此时此刻正在发生，而是在当前这段时间内持续进行的。
比如：“I am studying English these days”（这些天我正在学习英语。
）“He is writing a novel this month”（这个月他正在写一部小说。
）3、与 always 等词连用，表示反复出现或习惯性的动作，常带有感情色彩“ She is always talking in class”（她总是在课堂上讲话。
）这里用现在进行时表达了说话人的不满情绪。
“ He is constantly changing his mind”（他老是改变主意。
）此句中现在进行时突出了一种厌烦的感觉。
三、现在分词的构成规则1、一般情况下，在动词词尾直接加 ing例如：work working ； play playing ； study studying2、以不发音的字母 e 结尾的动词，去掉 e 再加 ing例如：write writing ； make making ； take taking3、以重读闭音节结尾，且末尾只有一个辅音字母的动词，双写末尾的辅音字母再加 ing例如：run running ； swim swimming ； sit sitting4、少数几个以 ie 结尾的动词，要变 ie 为 y 再加 ing例如：lie lying ； die dying ； tie tying四、现在进行时的否定句和疑问句1、否定句在 be 动词后面加 not 即可构成否定句。
现在进行时讲解
现在进行时用法讲解（一）结构：由助动词be(am/is/are)+现在分词构成。
其中be为助动词，无实际意义，但有人称和数的变化。
如：I’m writing a letter. 我在写信。
The boys are watching TV. 男孩们在看电视。
（二）表达的含义：1、表示此时此刻正在进行和发生的动作。
如：They’re having a meeting now. 现在他们正在开会。
2、表示现阶段正在进行的动作。
如：I am reading this book these days. 这些天我正在读这本书。
(三)经常出现的提示语1、当句子中出现表示时间的词：Now, this week,right now,at the moment,表示句子要说明的是现在正在发生的事，动词应用现在进行时。
2、当句子中出现时间是these days，this week,this month, this term 等时，如果句子所要表达的是这一阶段正在发生的事，则动词应用现在进行时。
3、当句子中出现了Look,listen, Can’t you see?等暗示词时，说明后面谓语动词的动作正在发生，该动词应用现在进行时。
4、注意根据上下文的暗示，句子的谓语动词可能应用现在进行时。
例1：--Where is Mr Wang?--Oh,he is reading a newspaper in the office.例2：-- Is that boy Jack?--No,Jack is doing his homework in the classroom.（四）变形：1、肯定句：主语+be+doingsth2、否定句：主语+be+not+doingsth3、一般疑问句：Be+主语+doing sth? 如：--Is Jim watching TV now?--NO, he isn’t. He isn’t watching TV now.--What is Jim doing now?--He is doing his homework.（五）现在分词的变化规则：1、一般直接加ing,如：read—reading, play—playing2、词尾若有不发音的e,去e再加ing , 如：write—writing,live—living3、以ie结尾的，要改ie为y再加ing如：die—dying ,lie—lying.4、以重读闭音节结尾，且末尾只有一个辅音字母的动词，要双写词尾的辅音字母再加ing,如put—putting, sit—sitting.。
现在进行时讲解
现在进行时讲解什么是现在进行时现在进行时是英语中的一种时态，用于表示说话者正描述或谈论正在发生的动作或状态。
它可以用来描述目前正在进行的动作、计划中的未来事件或者对现在的观点和看法。
在现在进行时中，动词使用“be”动词的现在分词形式（-ing 形式）加上动作的主体的“正在进行”的意思。
现在进行时同时也包括助动词“do”或“does”。
如何构成现在进行时现在进行时的构成形式是：肯定句：主语 + be动词 + 动词的现在分词（-ing形式）否定句：主语 + be动词 + not + 动词的现在分词疑问句： Be动词 + 主语 + 动词的现在分词 + ?下面是一些例子：•肯定句：I am writing an article.•否定句：She is not studying for the exam.•疑问句：Are they playing football?现在进行时的使用场景1.描述当前的动作：现在进行时最常用的情况是描述当前正在进行的动作或状态。
它强调正在发生的事情，通常使用正在进行的动作实例。
–She is watching TV at the moment.–We are studying for the test.2.表示计划或打算中的未来动作：现在进行时也可以用来表示计划或打算在不久的将来发生的事情。
–I am meeting my friends for dinner tonight.–They are going on vacation next week.3.描述现阶段的观点和看法：现在进行时还可以用来描述现阶段的观点、看法或事实。
这种用法常常带有主观的情感色彩。
–I am thinking that the company should invest more in research and development.–He is doubting the validity of the theory.现在进行时与其他时态的区别现在进行时与其他时态的区别在于它专注于当前的动作或状态，而不是按照时间顺序描述事情的发展。
现在进行时语法讲义
现在进行时【概念】1）现在进行时表示说话时正在进行或发生的动作。
例如：I am reading a book. 我正在看书。
2）表示现阶段正在进行而说话时不一定在进行的动作。
例如：I am learning English hard these days.这些日子我正在努力学习英语。
现在进行时的标志词。
现在进行时常和now、right now、at the moment、look、listen、be quiet等连用。
【用法讲解】I.现在进行时的结构。
现在进行时的结构是：主语+be（am，is，are）＋现在分词v-ing现在分词的构成：1）动词的后面直接加－ing。
例如：work－working，study－studying2）以不发音的字母e结尾的动词，先去掉字母e，再加－ing。
例如：live－living3）以重读闭音节结尾并且只有一个辅音字母的动词，先双写这个辅音字母，再加－ing。
例如：stop－stopping，swim－swimming，run－running【例题1】(2019.中山区期末) 58.现在是纽约上午9点钟，孩子们正在开始上课。
It's 9.00 am in New York,_____________________________________________【例题2】(2019 西岗区期末）75.此刻，你的朋友们正在做什么？____________________________________________________________________II. 现在进行时的用法。
1）现在进行时表示说话的时候正在进行的动作，经常和now，right now，at the moment 等时间状语或者动词look，listen等连用。
例如：My father is watching TV now.我爸爸现在在看电视。
Look! My brother is playing basketball there. 看！我弟弟正在那里打篮球。
现在进行时
现在进行时态讲解1、现在进行时的结构：主语+be+doing .如：He is swimming. She is reading a book.请把这个结构当作公式一样来记住。
要注意：是三部分，不是两部分。
好多人会忘了第二部分，也就是be动词部分。
如果句子中有am is are, 又有动词，动词必须用ing形式。
有的同学写成He swiming now.忘了加be 动词，有的同学写成He is swim now.忘了加ing形式。
翻译；看！她正在跳舞。
danceTom现在正在骑自行车。
He is a house. (draw)She is a letter. (write)They are . (run)3. 现在进行时表示某人正在某事,或某事正在发生。
因此在翻译现在进行时的句子的时候，应当翻译出“正在”两个字。
4．什么时候用现在进行时？答：看时间标志。
我们做翻译题都要看时间标志，首先确定用什么时态，然后再考虑主谓宾。
现在进行时的时间标志有；now，Look！Listen! 等。
Look! He is flying a kite.5、现在分词的构成规则：①一般在尾加ing,如read- reading②以不发音的e结尾的，去掉e在加ing.如：ride-riding。
③以一个元音字母加一个辅音字母结尾的，双写这个辅音字母再加ing如：swim- swimming, run- running。
注意：在现在分词的构成规则中，没有“变y为i”的规则。
“变y为i”，用在:A:名词复数;如：batterfly- butterlies,B:动词第三人称单数，如：try-tries.C:形容词变副词，如：angry- angrily中。
练习题：1、写出下列动词的现在分词；stand eat walksleep draw drinkread run swimsit jump writedance stay flylook do kicktalk play singcome count skip2、翻译下列句子；我正在跑步。
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讲解现在进行时的语法结构
1、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保持一致。
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。
2、现在分词的构成。
（1）一般情况下在动词词尾加ing。
go→going ask （问，询问）→asking look→looking （2）以不发音的e结尾的动词，去掉e加ing。
have →having take→taking make（做，制造）→making write（写）→writing （3）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）→running swim→swimming begin（开始）→beginning shop→shopping
(4) 特殊形式lie-lying die-dying
五、完成下列句子的否定句和一般疑问句的转换
He is running. 他正在跑。
The students are cleaning the room now .
We are sitting in the living room.
六、习题
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 baby __________(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 Green s _________ (have) supper.
10. He often _________ (swim) on Sundays. Look! He _________ (swim) at the pool.。