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

1、现在完成进行时G r a m m a r a n d u s a g e现在完成进行时的含义从过去到现在并且一直在持续进行完美包含两个时态的含义（现在完成 + 进行时）强调动作的连续进行性或者反复重复性，译成“一直；连续”现在完成进行时公式推导现在完成进行时has/have done+ be doinghas/have (be doing) ne has/have been doing现在完成时进行时 After I lost my right hand in a car accident ten years ago, I began to withdraw into myself, beli

2、eving 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 unbelievably difficult. Three months ago, however, all that changed when I was given the chance to test a new robotic han

3、d. 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 individual fingers and hold on to small things like pens and pencils. More amazingly, my robotic hand is capable of feeling

4、 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 the limits of what I can do with my new hand, and it constantly surprises me. I have rediscovered hobbies I had enjoyed

5、 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 grateful for all the new possibilities my robotic hand has opened up.现在完成进行时的用法动作从过去开始一直持续到现在还有可能继续,一般用延续性动词，并常和all the

6、 time, this month/week, in recent years等状语以及since和for引导的时间状语连用。 8 years agofuturenowlearnedlearn will learnI (learn) English since I was 8 years old and I still love it.have been learning 现在完成进行时的用法动作从过去开始，持续到刚好说话者讲话结束1. - I am sorry I have kept you waiting so long. - It is all right. I (read) the n

7、ewspapers. 2. We (wait) for you for half an hour. have been readinghave been waiting 现在完成进行时的用法表示动作的反复出现1. It (rain) these days.2. We (practice) Kung Fu recently.has been raining have been practicing 现在完成进行时的用法表示某种强烈的感情色彩,如：赞赏、批评、愤怒等。2. Why are you late again? I (wait) for you for two hours. 1. You

8、(make) progress and I am proud of you!have been making have been waiting 现在完成进行时和现在进行时的主要区别It has been raining since Halloween. It is raining.现在进行时现在进行时强调动作正在进行。现在完成进行时现在完成进行时强调一直在做。现在完成时和现在完成进行时的比较比较一： Li Jia _ (read) a book about Stonehenge. (She finished reading the book.) Li Jia _ (read) a book

9、about Stonehenge. (She is still reading the book.) has read has been reading 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刚结束刚结束动作仍在继续动作仍在继续比较二： A. _ have you visited Egypt this month? I have visited Egypt twice this month. (过去往返埃及和居住地, 但现在已回来) B. _ h

10、ave 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:现在完成时表示现在完成时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 long。比较三：Tip 3:Tip 3:现在完成进行时现在完成进行时比较生动，有时含有明显的比较生动，有时含有明显的感情色彩感情色彩，而，而现在

11、完成时现在完成时往往只说明一个往往只说明一个事实事实，一，一种种影响影响或或结果结果。 试比较：试比较： I have been dreaming to be an astronaut.I have dreamt to be an astronaut.比较四：(state verb & action verb)Tip 4：现在完成时现在完成时可以用表可以用表状态的动词状态的动词(have)和表和表动作的动词动作的动词(take)作谓语。而作谓语。而现在完成进行时现在完成进行时只能用表动作的动词只能用表动作的动词(take)作谓作谓语。语。I have had this camera for f

12、ive years.I have taken photos of UFOs with this camera.I have been having this camera for five years.I have been taking photos of UFOs with this camera.State verb & action verb常用表常用表状态状态、情感情感、感觉感觉的动词的动词: (1)have, exist，know，belong to等等(2)like, love，hate, believe, want, regret, prefer(更喜欢更喜欢)等等(3)see

13、，hear，smell, feel, taste等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。比较五：Tip 5：副词：副词never, yet, already ,ever等等可用于现在完可用于现在完成时成时，但，但不可用于现在完成进行时。不可用于现在完成进行时。I have never visited Paris.I have never been visiting Paris.He has already gone to Paris.He has already been going to Paris.Practice1. She2. I _

14、(write) the book, but I still _(finish) it.3. They _ never _(learn) to swim.4. We _(look) forward to our summer vacation. has losthave been writing havent finished have learnt have been lookingPractice 5. Although these scientists _ on the project for nearly four years, I dont know how long it will

15、last. A. have been working B. have worked C. were working D. are workingPractice 6. There is so much snow these days, isnt there? Yes, it _ for a few days. A. was snowing B. has been snowing C. had been snowing D. snowedPractice 7. I wonder why Jenny _ us recently. We should have heard from her by n

16、ow. A. hasnt written B. doesnt write C. wont write D. hadnt written Complete 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.2 I _ (wait) for two hours to see the doctor but it is still not my turn yet.3 My moth

17、er _ (write) a report on the new treatment all morning. She hopes to finish it tonight.have been reflectinghave been waitinghas been writingComplete the sentences with the correct forms of the verbs in the brackets.B14 The company _ (make) herbal medicines for more than 100 years.5 Scientists _ (do)

18、 research on the disease since it was first discovered in the early 20th century.has been makinghave 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

19、 legs, and many of them fail to get the help that they need. For some time, they (2) are hoping 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 tim

20、eBelow is an article about robotic limbs. Circle the correct expressions to complete it.B2Over the last few years, scientists (3) have been developing/will be developing new kinds of artificial limbs to help people overcome their disabilities. Robotic limbs can do much more than conventional artific

21、ial 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. With the advancement in robotic technology, artificial limbs can now perform much more complex tasks and come closer to re

22、al 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.Below is an article about robotic limbs. Circle the correct expressions to complete it.B2David Jones is one of a team of scientists

23、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 enjoy a higher quality of life.”1

24、. I _ (read) books about positive thinking recently and I will write about it in my article.2. -Will you apply to a university in Beijing? -I havent decided yet. I _(think) about it, though.3. Mick took some music lessons during the holidays and now he_(learn) to play the guitar.4. I think this is t

25、he best short story you_ (write). Why not have it published?P70 have been readingam thinking/have been thinkingis learninghave written5 -Has Alice found a new job yet? -Not yet, but she_(take) job interviews for weeks.6 Im confident that our team will win the competition because we_(work) hard for almost a year.7 It_(rain) heavily all day. I wish it would stop soon.8 - -Sorry Im late._ you_ (wait) long? - -No, Ive just arrived.has been takinghave been workinghas ben rainingHave;been waitingTHANK YOU FOR WATCHING谢谢欣赏