Unit 4 Discover useful structures ppt课件-（2022新）人教版高中英语选择性必修第三册(1).pptx

1、新人教版选择性必修三Unit4Discover useful structuresThe present perfect continuous tense.Knowledge objectives: Let the students fully understand the pragmatic function of the present perfect continuous tense and master the basic structure of this tense by rewriting the sentence.2.Skill objectives: To identify

2、the difference between the present perfect continuous and other tenses. 3.Emotional objectives: To communicate with the peers about recent life and express themselves in the present perfect continuous tense in real communicative situations.4.Thinking quality objectives: To use target structure and t

3、o improve their oral expression and communicative competence. 教学重点：How to identify the difference between the present perfect continuous and other tenses.教学难点：How to train them to use target structure.How to improve their oral expression and communicative competence.1. 现在完成进行时的用法2. 现在完成进行时与现在完 成时的区别

4、3. 巩固练习目录CONTENTS01现在完成进行时的用法The boy started eating five minutes ago. He is still eating now.The boy _ (eat) since five minutes ago. has been eatingThe man started working in the field half an hour ago. He is still working now.The man _ (work) in the field for half an hour. has been workingYou have

5、been making progress and I am proud of you!你一直在进步，我真为你感到骄傲。你一直在进步，我真为你感到骄傲。翻译以下句子，补全方框下的小题。1) .The boy has been eating since five minutes ago.2)The man has been working in the field for half an hour.3)You have been making progress and I am proud of you!以上句子中划线部分，用的是 ，其构成为： . 现在完成进行时have/hasbeendoing

6、Lead-in: Observe and discover现在完成进行时现在完成进行时现在完成进行时表示动作从过去过去某一时间开始，一直持续到现在现在，或者刚刚终止，或者可能还要继续进行继续进行下去。基本结构：基本结构： 主语主语+have/has been doingPastnowFuture现在完成进行时的用法现在完成进行时的用法1 1 learn 8 years agofuturenowlearnlearnI have been learning English since I was 8 years old and I still love it.1.表示动作从过去过去某时开始一直到说

7、话时还在进行一直到说话时还在进行或可可能还要继续下去能还要继续下去。 We have been waiting for you for half an hour.2. Her eyes are red. Its obvious that she has been crying for a long time. 2.2.动作发生在过去，刚终止，不再继续下去动作发生在过去，刚终止，不再继续下去现在完成进行时的用法现在完成进行时的用法2 2表示一段时间的状语表示一段时间的状语1. All these days he has been writing articles to our magazine.

8、2. Jack has been phoning Jane every night for the last week.现在完成进行时的用法现在完成进行时的用法3 3表示动作并不是一直不停地进行，而是在断断续续地重复。表示动作并不是一直不停地进行，而是在断断续续地重复。 现在完成进行时的用法现在完成进行时的用法4 43. Tom has always been working hard.4. What have you been doing to my dictionary? 赞许的感情色彩赞许的感情色彩不满的感情色彩不满的感情色彩带有感情色彩，使语言表达更加生动带有感情色彩，使语言表达更加生

9、动勤总结掌握现在完成进行时应注意的三点: 1. 现在完成进行时表示动作的持续进行, 或者刚刚终止, 或者可能仍然要继续下去。2. 现在完成进行时表示关切、惊讶、愤怒、赞许等感情色彩。3. 牢记常与现在完成进行时态搭配的时间状语 all day, all this morning, all these years, for+一段时间等。02现在完成进行时与现在完成时的区别现在完成时和现在完成进行时的比较 相同点：相同点：1. 动作都发生在过去动作都发生在过去2. 都与一段时间连用都与一段时间连用比较一： Li Jia _ (read) a book about psychology. (She

10、finished reading the book.) Li Jia _ (read) a book about psychology. (She is still reading the book.) has read has been readingCompare& discover: pastfuturenowread dohave read pastfuturenowread dohave been reading do现在完成时现在完成时现在完成进行时现在完成进行时动作刚结束；动作刚结束；强调影响或结果强调影响或结果动作还在延续；动作还在延续；强调动作的延续性强调动作的延续性Comp

11、are& discover:I have made a cake. 我做了一个蛋糕。I have been making a cake. 我一直在做一个蛋糕。She has painted a picture. 她画了一幅画。She has been painting a picture. 她在画一幅画。（已做好）（不一定做好了）（已画好）（可能还没画好）1. 现在完成时现在完成时 强调动作行为的影响或结果；强调动作行为的影响或结果； 现在完成进行时现在完成进行时 强调动作未完成和强调动作未完成和延续性延续性Summary: 现在完成进行时现在完成进行时 可以表示动作的反复性；可以表示动作的反

12、复性； 现在完成时现在完成时 经常表单个事件一般不表示动作的反复。经常表单个事件一般不表示动作的反复。 I have been taking part in races for four years. 我这四年我这四年一直一直在参加比赛。在参加比赛。 I have taken part in races. 我已经参加了比赛。我已经参加了比赛。2.Summary:动作的反复性动作的反复性单个事件单个事件The old man has been repairing cars for thirty years. 比较二：（2） A. _ have you visited Egypt this mon

13、th? I have visited Egypt twice this month. (过去往返埃及和居住地, 但现在已回来) B. _ have you been touring Egypt? I have been touring Egypt for two month. (过去一段时间一直待在埃及, 没有离开过)How many timesHow longTip 2:现在完成时现在完成时表示表示反复发生反复发生的动作，提问时用的动作，提问时用how many times。而现在完成进行时，表示而现在完成进行时，表示持续的、不间断的持续的、不间断的动作，提问时用动作，提问时用how lon

14、g。3. 现在完成时现在完成时 通常只说明一个事实，一种影响或结果；通常只说明一个事实，一种影响或结果； 现在完成进行时现在完成进行时 比较生动，有时含有明显的感情色彩比较生动，有时含有明显的感情色彩（喜悦喜悦、愤怒愤怒、不满不满、厌恶厌恶）等。I have waited for you for two hours. I have been waiting for you for two hours.Summary:下列句型中常用现在完成时 It is (has been) +一段时间 since +从句 This (that/ It ) is the first (second) time

15、that + 完成时 This (That/ It) is the best/ finest / most interesting.+that+完成时 比较四：（1） Its/ It has been 3 years since they got married. Its the first time that I have been to the Great Wall. This is the most interesting film that I have seen.They have known each other since 1970. （1 1）有些表示状态、感情、感觉的动词如：

16、）有些表示状态、感情、感觉的动词如： 表示感官、感觉：see, hear, smell 等； 表示爱憎：love, prefer, mind 等； 表示希望、意愿：wish, want, desire 等； 表示相信、猜想：believe, think, suppose 等； 不能用于现在完成进行时，但可用于现在完成时。不能用于现在完成进行时，但可用于现在完成时。 John has loved Mary since ten years ago.比较四：（2）以下几类动词不能用于现在完成进行时： 2.现在完成进行时与现在完成时的区别现在完成进行时与现在完成时的区别 现在完成进行时现在完成进行时现

17、在完成时现在完成时强调过去的动作对现在的影响或产强调过去的动作对现在的影响或产生的结果生的结果 强调动作的延续性强调动作的延续性 强调动作重复强调动作重复 表达生动，含有感情色彩表达生动，含有感情色彩 说明一个事实、一种影响或结果说明一个事实、一种影响或结果 1. 现在完成进行时的现在完成进行时的结构结构: have/has + been + doing2.用法用法： 表示表示动作从过去某一时刻开始一直持续到现在动作从过去某一时刻开始一直持续到现在，甚至，甚至将来将来，强调，强调进行的过程进行的过程。 表示表示从过去到现在的一段时间反复进行的动作或存在的状态从过去到现在的一段时间反复进行的动作

18、或存在的状态。3. 常用时间状语常用时间状语: all the time, this week, all night, these few days, for, since等。等。4. 现在完成时和现在完成进行时的现在完成时和现在完成进行时的区别区别： 动作是否有动作是否有延续性延续性 是否表示动作是否表示动作重复性重复性 是否有是否有感情色彩感情色彩Review03巩固练习【内化用】 (1)翻译句子。我一直等了你两个小时。_ 我等你两个小时了。_ (2)用所给词的适当形式填空。There _(exist) an old temple since the Ming Dynasty. I _(t

19、each) English for almost twenty years, and I will step in another new teaching year. I have been waiting for you for two hours.I have waited for you for two hours.has existedhave been teachingRead each situation and rewrite each sentence using the present perfect continuous tense. P41 21. The dog st

20、arted to bark about two hours ago. I really hope it will stop soon. 2. Steve started to play rugby at the age of eight. Now he has become a professional player.3. Timmy is holding a table tennis bat and his short hair is damp with sweat. He looks a little tired after playing table tennis for two hou

21、rs. The dog has been barking for about two hours. Steve has been playing rugby since the age of eight. He looks a little tired because he has been playing table tennis for two hours.4. Diane hasnt got much sleep this week. She looks terrible today.5. I tried to phone you this morning. I must have tr

22、ied a dozen times before I caught you here. Diane hasnt been sleeping well this week.I have been trying to phone you this morning.1. For the whole morning, the board of the directors _ (discuss) the resolution to increase wages in the coming year.2. Jasons only recreation is painting. He _ (learn) h

23、ow to paint for over five years.3. Even though we lost the game, we should be proud of ourselves because we _ (try) our best and _ (work) as a team.4. He finally _ (finish) the research paper under his tutors guidance.5. My nephew Sam _ (collect) comic books since he was five. Now he has more than t

24、wo hundred of them.6. The company _ (launch) an advertising campaign to promote its corporate image.has been discussinghas been learninghave been tryingworkingfinishedhas been collectingis launching/has launched/ launchedComplete the sentences below using the correct tenses of the verbs in brackets.

25、 P41 3真题演练真题演练1. People _ (pour) into stadiums since the days of ancient Greece. (2021 全国乙卷)2. For the biggest stadiums in the world, we _(use) data supplied by the World Atlas list so far, which _ (rank) them by their stated permanent capacity, as well as updated information from official stadium w

26、ebsites. (2021 全国乙卷)3. You know, I _ (look) for a job for three months, and this is my first formal interview.have been pouringhave usedrankshave been looking单句语法单句语法填空填空The Chinese government (do) research into vaccine against EHF for months，and recently many have received the first doses.The dolla

27、r (climb) steadily all week.I (wait) for an hour and a half.Jim (phone) Jenny every night for the past week.You are a great swimmer.Thanks.Its because I (practise)a lot these days.(2020天津卷单选改编天津卷单选改编)has been doinghas been climbinghave been waitinghas been phoninghave been practising单句语法填空单句语法填空Alth

28、ough many measures (take)，the worlds economy is still going down.The number of medical schools reached 18 in the early 1990s and (remain)around that level since.(2020天津卷单选改编天津卷单选改编)He (listen) to English programs since he came to the US，so he (make) great progress.Sorry，but Mr.Smith (leave) for Beij

29、ing.have been takenhas remainedhas been listeninghas madehas leftThe little boy is dirty from head to foot because he (play) in the mud all morning.By the time he realizes he (walk) into a trap，itll be too late for him to do anything about it.has been playinghas walked.单句语法填空单句语法填空1.The telephone (r

30、ing) in the office all the morning.2.In the past few years，he (deal) with a few international companies.3.She is tired.She (type) letters all the afternoon.4.Sheng Jinyun，born in 1935，a famous expert in pediatric asthma(儿科哮喘儿科哮喘)， (treat)about 30，000 children suffering asthma so far.5.The paper boat

31、 (float) on the water for two hours.has been ringinghas been dealinghas been typinghas treatedhas been floating6.The musician along with his band members (give) ten performances in the last three months. (2019江苏卷单选改编江苏卷单选改编)7.I dont see any reason to give up work.I love coming here and seeing my fam

32、ily and all the friends I (make) over the years.(2019全国卷全国卷语法填空语法填空)8.In recent years some Inuit people in Nunayut (report) increases in bear sightings around human settlements，leading to a belief that populations are increasing. (2019全国卷全国卷语法填空语法填空)has givenhave madehave reported9.He hasnt got much

33、 hair.He (lose) it since he was only thirty.10.Now that Lucy is out of work，she (consider)going back to school，but she (not decide) yet.has been losinghas been consideringhasnt decided.补全句子补全句子1.The two men _. I really hope theyll stop soon.这这两个人已经吵了将近十分钟了。我真希望他们能很快停止。两个人已经吵了将近十分钟了。我真希望他们能很快停止。2.The

34、 workers _ in the past ten months.在在过去的十个月里，工人们一直在建造桥梁。过去的十个月里，工人们一直在建造桥梁。3.Such will be my future life，one I _.这这就是我梦寐以求的未来生活。就是我梦寐以求的未来生活。have been quarreling for nearly ten minuteshave been building bridgeshave been dreaming of4.I _，so I will never give up before I succeed.我我从事这个项目已经有很多年了，所以我在成功之

35、前永远不会放弃。从事这个项目已经有很多年了，所以我在成功之前永远不会放弃。5.As a science student，_，which all belong to the college entrance examination subjects.作为作为理科学生，我一直在复习属于高考科目的汉语，数学，英语，物理学，理科学生，我一直在复习属于高考科目的汉语，数学，英语，物理学，化学和生物学化学和生物学。have been working on this project for so many yearsIve been reviewing Chinese，math，English，physic

36、s，chemistry and biology6.We _ for the coming activities.我们为即将开展的活动做了周密的准备。我们为即将开展的活动做了周密的准备。7.Please stop to have a rest.You _ the whole morning.请请停下来休息一下。您整个上午都在修理洗衣机。停下来休息一下。您整个上午都在修理洗衣机。8.To start with，I _ Mandarin for about 17 years. 首先，我已经学习和说普通话首先，我已经学习和说普通话17年了。年了。have made careful preparatio

37、nshave been repairing the washing machinehave been learning and speaking.语法填空语法填空After water，tea is the second most-consumed drink in the world and 1. (enjoy) for centuries.Tea production began in China，but soon spread to other parts of Asia.When European explorers came across the satisfying drink o

38、n their travels，they caused a demand for tea worldwide that continues to grow in spite of 2. (compete) from soft drinks and coffee.has been enjoyedcompetition此处要表达的是此处要表达的是“尽管有来自软饮料和咖啡的竞争尽管有来自软饮料和咖啡的竞争”，故填故填competition。由语境及由语境及for centuries可知可知enjoy所表示的动作开始于过去，并一直持续到现在，且所表示的动作开始于过去，并一直持续到现在，且tea与与en

39、joy之间是逻辑上的动宾关系，之间是逻辑上的动宾关系，故填故填has been enjoyed。There are four main 3. (type) of tea：black，white，green and oolong.The difference depends on the processes 4. (use) for treating the tea leaves.China and Japan produce the best green tea and India and Sri Lanka are famous 5. their black teas.Different r

40、egions have their own specialties.For example，mint (薄荷薄荷) tea is drunk in North Africa and the Middle East.Earl Grey tea，named after a British prime minister 6. lived from 1764 to 1845，is one of 7. most popular black tea in the world.types.used.forwho/thattheFlowering tea balls are a novelty (新奇新奇)

41、tea，made by 8. (proper) sewing the tea leaves and flowers into tight balls.When the ball is placed in hot water，it opens up，9. (show) the lovely flower inside.Delicious and 10. (health)，tea deserves its place as the worlds most loved drink.Lets lift our glasses and have a toastto tea！properly.showin

42、ghealthy【语篇解读】【语篇解读】本文是说明文，主要介绍了世界各地的茶文化。本文是说明文，主要介绍了世界各地的茶文化。1.has been enjoyed由语境及由语境及for centuries可知可知enjoy所表示的动作开始于过所表示的动作开始于过去，并一直持续到现在，且去，并一直持续到现在，且tea与与enjoy之间是逻辑上的动宾关系，故填之间是逻辑上的动宾关系，故填has been enjoyed。petition此处要表达的是此处要表达的是“尽管有来自软饮料和咖啡的竞争尽管有来自软饮料和咖啡的竞争”，故填，故填competition。3.types由设空处前的由设空处前的fo

43、ur可知，设空处应填名词的复数形式，故填可知，设空处应填名词的复数形式，故填types。4.used设空处作设空处作processes的后置定语，因为的后置定语，因为use与与processes之间是逻辑上的之间是逻辑上的动宾关系，且动宾关系，且use所表示的动作已完成，故填所表示的动作已完成，故填used。5.forbe famous for意为意为“以以而闻名而闻名”。6.who/that设空处引导限制性定语从句修饰设空处引导限制性定语从句修饰a British prime minister，且在，且在从句中作主语，故填从句中作主语，故填who/that。7.the形容词最高级前填定冠词形

44、容词最高级前填定冠词the。8.properly设空处修饰动词设空处修饰动词sewing，故填副词，故填副词properly。9.showing设空处作伴随状语，因为设空处作伴随状语，因为it与与show之间是逻辑上的主谓关系，且之间是逻辑上的主谓关系，且show所表示的动作与谓语动作同时发生，故填所表示的动作与谓语动作同时发生，故填showing。10.healthy设空处与设空处与Delicious并列作主语补足语，意为并列作主语补足语，意为“健康的健康的”，故填，故填healthy。Homework:1.2.ThanksGrammarTask 2现在完成进行时结构用法时间状语现在完成时和现在完成进行时的区别have/has + been + doing1.表示动作从过去某一时刻开始一直持续到现在，甚至将来，强调进行的过程。2.表示从过去到现在的一段时间反复进行的动作或存在的状态。all the time this weekall nightthese few daysfor, since动作是否有延续性是否表示动作重复性