外研版(2019)必修第三册Unit 3 The world of Science Using language 语法讲解加练习课件(共18张PPT)

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名称 外研版(2019)必修第三册Unit 3 The world of Science Using language 语法讲解加练习课件(共18张PPT)
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版本资源 外研版(2019)
科目 英语
更新时间 2024-04-24 08:59:08

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(共18张PPT)
必修三Unit 3 The World of science
Using Language
Present perfect passive
详解+练习
1
2
To master basic knowledge of this lesson and use then freely.
To help students master how to use present perfect passive correct.
To sharpen students’ listening ability by practising with the help of the teacher.
3
目标一:To know the usage of present perfect passive voice and use it correctly
Activity 1: Look at the sentences from the reading passage and answer the questions.
a. I guess you have been asked about the title of your book before.
b. New inventions like 3D printers have been used to make replacement hearts and bone parts.
1. What has happened to “you” in sentence (a)
2. Who has used new inventions to make replacement hearts and bone parts in sentence (b)
Someone has asked “you” about the title of your book before.
People have used 3D printers to make replacement hearts and bone parts.
Compare them with the following sentences and answer the questions.
c. I guess someone has asked you about the title of your book before.
d. People have used new inventions like 3D printers to make replacement hearts and bone parts.
3. What is the difference between the two groups of sentences
In the first group, the words in bold show the use of the passive form with the subjects, while in the second group, the words in bold show the use of the active form with the subjects.
Now look for more sentences with the present perfect passive in the reading passage.
1. The New Age of Invention has just been published. (para.1)
2. In addition, important advances have been made in medicine and environmental science thanks to increasing computer power. (para.6)
3. Sure. New inventions like 3D printers have been used to make replacement hearts and bone parts. (para. 8)
4. Nothing like this has been invented yet and I’d say we’re a long way from an invention like that at the moment. (para.14)
要义详解
一、现在完成时的被动语态概念和构成
1)概念
现在完成时的被动语态强调一个发生在过去的被动动作,它有两层意思:
(1)动作已经完成,强调对现在造成的影响或结果:
(2)主语与谓语动词之间为逻辑上的动宾关系。
1. Our classroom _____________(clean), you needn’t clean it now.
2. These flowers ________________(water), you can go home.
2) 构成
肯定式 主语 +have/has been done
否定句 主语 +have/has not been done
一般疑问句 have/has +主语+ been done...
特殊疑问句 疑问词+have/has+主语+been done...
has been cleaned
have been watered
1. He _______________(select) to take part in the sports meeting already.
2. The ink ________________(not) removed from his overcoat.
3. _______the date for the next meeting ___________(decide)
4. How long ______the battery ____________(not change)
【即学活用】
完成句子/单句翻译
1. The boys ________________________(已经被多次告知) not to swim in that lake, but it doesn’t make any difference.
2. When and where to go for the on-salary holiday _________________(没有确定)yet.
3. That book ___________________(已经被翻译)into at last 20 foreign languages so far.
4. 电池多久没有更换了? _______________________________________
5. 下次会议的日期已确定了吗?______________________________________
1. has been selected 2. has not been removed 3. Has...been decided
4. has...been changed
has been told many times
has not been decided
has been translated
How long has the battery not been changed
Has the date for the next meeting been decided
二、现在完成时态的被动语态的用法
1)表示被动的动作在说话前已经完成,强调过去的动作对现在造成的影响或结果,通常与already, yet, just, never, recently, before, so fa, by now, till now, in/during/over the past/last/recent +段时间等状语(从句)连用。
1. The machine has already been repaired.
2)表示被动的动作或状态开始于过去,持续到现在,常与for或since引导的时间状语连用,或用于“How long... ”从句中。
1. Financial problems of the company have been discussed for nearly two hours.
2. How long has this film been shown
3) 用在时间或条件状语从句中,表示将来某时已经完成的动作。
1. You shouldn’t leave school before your homework has been finished.
【即学活用】单句语法填空
1. ---The machine is working again!
---Yes, it broke down yesterday, but it ______________(fix).
2. More than 50,000 yuan _____________(raise) for the poor family since the group was founded.
3. Over the past three years, the paintings ____________(take) to moe than 20 museums in the world.
4. Travelling to conferences, lectures, workshops, and the like frequently by plane __________(view) as important for scientists to get together and exchange information.
三、注意的问题
1) 非延续性动词在现在完成时的被动语态中的运用。
非延续性动词, 如borrow, finish, begin, start, buy, marry, open, join等构成的现在完成时的被动语态不与for 或since 连用。但这类动词的否定式可表示动作的持续过程,具有连续性,因而可与since或for引导的时间状语连用。
has been fixed
has been raised
has been taken
has been viewed
1. No books have been bought since last week.
2) 瞬间动词的完成时态没有被动语态。如break out, happen, take place, occur, last
Greeat changes have been taken place in our hometwon. (correcton)
3) 动词短语是一个不可分割的整体,在被动结构中要保持完整性,不可省略动词短语中的介词或副词。
1. The orphan has been looked after by his neighbours.
2. The problem has been paid enough attention to.
删掉been
4) 带有双宾语的动词,如give, send, bring, take, teach, show, tell, make, sing, write, read, sell, buy, pay, lend, pass, promise等,变为被动语态时,一般将直接宾语或间接宾语变为被动语态的主语,若将直接宾语变为被动语态的主语时, 间接宾语前面要用相应的介词。
1. The company has given him a chance to work abroad recently.
2. He has been given a chance to work abroad recently (by the company).
3. A chance has been given to him to work abroad recently (by the company).
3. A birthday gift has been bought to him by his uncle.
4. He has been bought a birthday gift by his uncle.
2
Rewrite the underlined parts using the present perfect passive.
Within the next 80 years, our lives may be changed beyond recognition by 3D printing. It has already affected many things in our lives, right down to the food we eat. For instance, some restaurants in London have served 3D-printed hamburgers to customers. But perhaps the most significant success that people have achieved to date is in medicine.
They have made human body parts, including a beating heart, with 3D printing technology. And it is not just humans who are benefiting - in Brazil, people have given a new 3D-printed shell to a turtle injured in a forest fire!
Many things in our lives have already been affected
3D-printed hamburgers have been served to customers in some restaurants in London.
But perhaps the most significant success that have been achieved to date is in medicine.
Human body parts, including a beating heart, have been made with 3D printing technology.
A new 3D-printed shell has been given to a turtle injured in a forest fire!
3
Imagine you are Dr Moore. Look at the pictures and tell the police about the damage and loss to your lab. Use the present perfect passive where appropriate.
The lock on the door has been broken.
The window has been broken.
My two laptops have been stolen.
Beakers and test tubes have been destroyed.
The book case has been opened, and some files have been taken away while others have been thrown everywhere.
The robot has been damaged.
A pair of gloves have been left in the lab.
Practise
一、单句语法填空
1. Great changes _____(take) place in my hometown and a lot of factories ______(set) up there in the past ten years.
2. The novel ______(finish) and will come out next month.
3. Up to now, a large number of schools _____(build) in this area.
4. Because Jack was always late for work, Lily just told me he ______(fire) since last month.
5. ---Why did you leave that position
---I _____(offer) a better position at IBM.
6. Profesor Yang ______(invite) to the film festival twice so far.
7. How to solve that difficult technological problem _______(not decide) by them yet.
8. How long _____the building _______(build)
9. Boys and girls! checking your exercise books, I find some ________(not hand) in.
10. After the three new projects ______(finish), I am sure i can apply my experience to this job.
二、完成句子
1. 纸币已经使用了1000多年了。
Paper money __________________________for over one thousand years.
2. 当你把纸拿回来的时候,要特别注意做了标记的东西。
When you get the paper back, pay special attnetion to _________________.
3. 在过去的几年里,世界各地已经制作了数千部电影。
In the last few years _______________________all over the world.
4. 公司的财务问题已经讨论了近两个小时了。
Financial problems of the cmpany _____________________________.
5. 运动会已经推迟到下周五了吗?
__________________________till next Friday
Key
一、
1. have taken; have been set up 2. has been inished 3. have been built 4. had been fired
5. have been offered 6. has been invited 7. has not been decided 8. has...been built
9. havee not ben handed 10. have been finished
二、
1. has been used 2. waht has been marked 3. thousands of films have ben produced/made
4. have been discussed or nearrly 2 hours 5. Has the sports meeting been put off/delayed
Thank you!