Unit 3 Grammar and usageppt课件-（2020）新牛津译林版高中英语选择性必修第二册 (2).pptx

1、 explore the rules about present perfect continuous tense. work out the rules. apply the rules.A Exploring the rulesBelow is a personal account given by a girl who is equipped with a robotic hand. Find the sentences that use the present perfect continuous tense and fill in the box below. The first o

2、ne has been done for you.After I lost my right hand in a car accident ten years ago, I began to withdraw into myself, believing I would never be able to lead a normal life again. I was equipped with an artificial hand, but it did not feel like part of me. Even simple things like getting dressed were

3、 unbelievably difficult. Three months ago, however, all that changed when I was given the chance to test a new robotic hand.Scientists have been making great progress in robotic technology in recent years, and their work on robotic limbs has really changed my life. With my new hand, I can move my in

4、dividual fingers and hold on to small things like pens and pencils. More amazingly, my robotic hand is capable of feeling varying degrees of pressure, just like a real hand. In addition, it looks very lifelike with special rubber used on the outside.Over the past three months I have been testing out

5、 the limits of what I can do with my new hand, and it constantly surprises me. I have rediscovered hobbies I had enjoyed before my accident. For example, I have been cooking for my family again since I got my new hand. Not only can I do more, but I have also become more confident and outgoing. Im so

6、 grateful for all the new possibilities my robotic hand has opened up.Scientists have been making great progress in robotic technology in recent years, Over the past three months I have been testing out the limits of what I can do with my new hand, , I have been cooking for my family again since I g

7、ot my new hand.Sentences use the present perfect continuous tense:Working out the rules We use the present perfect continuous tense to talk about an action that started in the past and is still continuing now, or an action that has just finished but is still connected with (1) _ (the past/the presen

8、t/ the future) in some way. The verb form of the present perfect continuous tense is “(2) _”.the presenthave / has been doing1 现在完成进行时表示现在完成进行时表示一直持续到现在的动作一直持续到现在的动作，该动作可能刚，该动作可能刚停止，停止，也可能也可能仍在进行。如：仍在进行。如：I have been working on the computer for hours.Sorry, Im late. Have you been waiting long?2 现在完成

9、进行时的动作往往与现在完成进行时的动作往往与现在的状态有联系现在的状态有联系。如：。如：You dont look well. Have you been working too hard?3 现在完成进行时的构成形式为现在完成进行时的构成形式为have/has been doing。如：。如：You have been standing here for an hour.4 常常与与all this time, this week / month, all night, all the morning / afternoon, recently等时间状语以及由等时间状语以及由since或或f

10、or引导的时间状引导的时间状语连用。如语连用。如：She has been painting the house all the afternoon.Lily has been doing her homework since 4 oclock this afternoon.We have been studying in the school for three years.5 有时有时表示动作的重复。如表示动作的重复。如：You have been saying that for five years. Im fed up with it.【注意注意】现在现在完成进行时与现在完成时的区别完

11、成进行时与现在完成时的区别：现在完成进行时有时含有一种现在完成进行时有时含有一种临时性临时性，而现在完成时通常表，而现在完成时通常表示示最后的结果最后的结果。如。如：They have been working in the company for five years.We have cleaned the classroom. 现在完成进行时有时现在完成进行时有时表示动作的延续性表示动作的延续性，而现在完成时往往，而现在完成时往往没有这一含义。如没有这一含义。如：They have been widening the road, and the work is not finished.T

12、hey have widened the road and the traffic on the road is smooth now.现在完成进行时可以现在完成进行时可以表示某动作在重复表示某动作在重复，而现在完成时，而现在完成时则没有这一含义。如则没有这一含义。如：Have you been meeting her lately?现在完成进行时有时含有现在完成进行时有时含有比较明显的感情色彩比较明显的感情色彩，而现在，而现在完成时只是在说明一个事实或结果，一般不带感情色彩。完成时只是在说明一个事实或结果，一般不带感情色彩。如如：What have you been doing these

13、days? Why didnt you give me a call?B Applying the rulesComplete the sentences with the correct forms of the verbs in the brackets.B11 I _ (reflect) on the article I read about ancient medicine all day.have been reflecting2 I _ (wait) for two hours to see the doctor but it is still not my turn yet.ha

14、ve been waiting3 My mother _ (write) a report on the new treatment all morning. She hopes to finish it tonight.has been writing4 The company _ (make) herbal medicines for more than 100 years.has been making5 Scientists _ (do) research on the disease since it was first discovered in the early 20th ce

15、ntury.have been doingBelow is an article about robotic limbs. Circle the correct expressions to complete it.B2It (1) is being estimated/has been estimated that over 30 million people worldwide have lost arms or legs, and many of them fail to get the help that they need. For some time, they (2) are h

16、oping for/have been hoping for better quality artificial limbs. Fortunately, one exciting new advance could help these physically disabled people lead a normal life again: robotic limbs.for a long period of timeOver the last few years, scientists (3) have been developing/will be developing new kinds

17、 of artificial limbs to help people overcome their disabilities. Robotic limbs can do much more than conventional artificial limbs. Some of the earliest artificial limbs were made of wood and leather, and until recently, artificial limbs (4) have only served/have only been serving basic functions. W

18、ith the advancement in robotic technology, artificial limbs can now perform much more complex tasks and come closer to real human limbs. Not only can they make a much wider range of movements, but they can also be controlled directly by the brain and feed sensory information back into it.David Jones

19、 is one of a team of scientists devoted to making even better robotic limbs. “We (5) have done/have been doing everything we can to advance this technology and we will not take out a patent on it,” said David. “Hopefully, more and more people in need of robotic limbs will be equipped with them and e

20、njoy a higher quality of life.”Answer the questions after reading B2.1. What were some of the earliest artificial limbs like?They were made of wood and leather, and served only basic functions.2. What can robotic limbs do?They come closer to real human limbs and can perform much more complex tasks.

21、They can even be controlled directly by the brain and feed sensory information back into it.3. Why did David Jones say they would not take out a patent on the technology of robotic limbs?Because they hoped that more and more people in need of robotic limbs would be equipped with the limbs and enjoy

22、a higher quality of life.A student is interviewing David Jones about the research he has been doing. In pairs, role-play the interview using the present perfect continuous tense. The beginning has been given.B3Student: What have you been doing, Dr Jones?David Jones: We have been developingStudent: W

23、hat have you been doing, Dr Jones?David Jones: We have been developing even better robotic limbs than those available at the moment. Student: Is it difficult to develop the new robotic technology?David Jones: Yes. Our team of scientists have been devoting most of their time to the project and we hav

24、e been doing everything we can to advance this technology.Student: Thats great! Why is this technology important to you personally?David Jones: Because my goal is to equip as many people as possible who need robotic limbs, and help them enjoy a higher quality of life. For these reasons, we will not

25、take out a patent on the technology, so it will be available to anyone who needs it. we have been spreading the news about our technology all over the world.1. A girl who is equipped with a robotic hand.equip v. 1) to provide a person or place with the things that are needed for a particular kind of

26、 activity or work 装备装备，配备配备equip sb / sth with sth be equipped to do sth.e.g. They spent a lot of money equipping the school with new computers.The emergency services are equipped to deal with disasters of this kind.2) to give someone the information and skills that they need to do something 使使有知识和技

27、能，使能够有知识和技能，使能够胜任胜任equip sb. with sth.； equip sb. for sth. ； equip sb. to do sth.e.g. We equip students with the skills they will need once they leave college.The training will equip you for the job. We must equip young teachers to deal with difficult children.【拓展拓展】equipment n. 设备，装备设备，装备【语境应用语境应用】

28、 根据括号内的汉语提示补全下面句子（每空根据括号内的汉语提示补全下面句子（每空一词）一词）。1) He _ _ _ _ _ (带带上一张地图上一张地图) and set off for the forest.2) Proper education will _ _ _ _ _ (使你具备就业的能力使你具备就业的能力). equipped himself with a map equip you for a job2. One exciting new advance could help these physically disabled people lead a normal life a

29、gain: robotic limbs.disabled adj. someone who is disabled cannot use a part of their body properly, or cannot learn easily残障残障的，残疾的，残疾的的disabled parking / toilet / access 残疾人残疾人停车场停车场/厕所厕所/入口入口【拓展拓展】disable v. 使伤残，使残废使伤残，使残废disability n. 缺陷，障碍缺陷，障碍unable adj. 不能不能的，不会的，不会的的用括号内（短语）动词的正确形式填空用括号内（短语）动

30、词的正确形式填空。1. Im sure Joey will win the first prize in the coming singing competitionI agree. He _ (prepare) for it for months. And listen, he is practicing singing now.2. He _ (cough) a lot. He should go to see a doctor.3. My dog is missing. I _ (look for) it recently and still havent found it.has be

31、en preparinghas been coughinghave been looking for4. I wont buy that book because I _ (read) it.5. Here he is! We _ (wait) anxiously for him since last night. 6. Amy _ (expect) a long distance call all night.7. Kate _ (consider) going home because she has run out of money, but she hasnt decided yet.8. I wont tell the student the answer of the question until he _ (work) on it for more than ten minutes.have readhave been waiting has been expectingis considering / has been consideringhas been workingWrite a short summary of the article in B2 using the present perfect continuous tense.