Unit 3 Using Languageppt课件-2022高中英语新外研版必修第三册.pptx

1、01Present Perfect 现在完成时 (have/has+v-ed)1.表示说话时已经完成的动作，而且这个动作的结果对现在仍有影响;2.表示动作发生在过去，但一直持续到现在，并且有可能继续持续下去。一般和与现在有联系的时间状语(从句)连用：already,recently,lately,in recent years,so far,up to now,for+时间段；during/in/over/for the last/past+时间段；since引导的时间状语或状语从句。Passive Voice助动词be+及物动词的过去分词be随主语的人称、数和时态的变化而变化。1.1.当强调

2、动作承受者，不知道当强调动作承受者，不知道/不必说出执行者或执行者含糊不清时，多用不必说出执行者或执行者含糊不清时，多用被动语态。被动语态。e.g.The letter has been opened.2.2.强调动作承受者，而不强调动作的执行者强调动作承受者，而不强调动作的执行者e.g.All these products have been tested.3.3.为了礼貌需要，避免说出动作的执行者为了礼貌需要，避免说出动作的执行者肯定式主语have/has been done.否定式主语have/has not been done.一般疑问式Have/Has主语been done.？特殊疑

3、问式疑问词have/has主语been done.？Present Perfect Passive 现在完成时被动态 have/has been+v-ed并不是所有动词都有被动语态。happen,take place,break out,belong to,cost,last等不及物动词或词组无被动语态。e.g.Great changes have taken place in China since 1978.The children havent been told the good news.即学即练(1)句型转换The children have already been told t

4、he good news.将上面的句子变为否定句。_将上面的句子变为一般疑问句。_将上面的句子对the children进行提问。_ Have the children been told the good news yet?Who has been told the good news yet?孤儿们在这里受到很好的照顾。e.g.The orphans have been taken good care of here 动词短语是一个不可分割的整体，在被动语态中要保持其完整性，其中的介词或副词不可省略。Within the next 80 years,our lives may be cha

5、nged 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

6、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 giver a new 3D-printed shell to a turtle injured in a forest fire!Rewrite the underlined parts using the present perfect passive.Many things in our live

7、s have already been affected3D-printed hamburgers have been served to customers by some restaurants in London.But perhaps the most significant success that has been achieved to date is in machine.Human body parts,including a beating heart,have been made with 3D printing technology.a new 3D-printed s

8、hell has been given to a turtle injured in a forest fire!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.a.The window has been broken.b.The lock on the door has been broken.c.My two laptops have

9、 been stolen.d.Beakers and test tubes have been destroyed.e.The book case has been opened,and some files have been taken away while others have been thrown everywhere.f.The robot has been damaged.g.A pair of glooves has been left near the door.The buildings have been destroyed by the earthquake.the

10、buildings,destroy,earthquake Make up sentences using the present perfect passive voice.replaceThe machine has been replaced by the putermachine【附】【附】现在完成进行时：1.结构：have/has been doing2.概念：现在完成进行时表示从过去某时开始一直持续到现在的动作，并且还将持续下去。现在完成进行时强调的是动作的过程及持续性，可用来解释某一现象。e.g.I have been learning English since three ye

11、ars ago.e.g.We are very tired.Weve been cleaning the house.现在完成时现在完成进行时表示动作已经完成 表示动作在迄今为止的一段时间被曾持续进行或目前仍在持续强调动作的结果强调动作持续进行的状态02What are the corresponding subjects?physics,mathematics,chemistry,astronomer,geography,biologyPlease complete the introductions.astronomer biologistgeographerchemistphysicis

12、tmathematician journalist 新闻记者 lawyer 律师 accountant 会计 dentist牙医 librarian图书管理员 surgeon 外科医生 pharmacist药剂师 anesthetist 麻醉师 governor政府官员 stewardess 空中服务员 secretary 秘书 headmaster 校长 manager 经理 pilot 飞行员 03How much do you know about Alzheimers disease?Alzheimers diseasesymptoms:sleeping issue disturbed

13、 memory mood disorder increasing confusiondementia 痴呆痴呆1.Number the picture in the correct order.2.Listen to the material and check your prediction.Invention Stories1.Number the picture in the correct order.2.Listen to the material and check your prediction.Invention Storiescbdae1.a pair of socks de

14、signed for people with Alzheimers disease2.a student form New York3.His grandfather4.A warning5.gets out of bedMike:Hey,look!Ive read about a cool invention in this magazine!Anna:A pair of socks?Mike:Yes,but theyre not ordinary socks.This is a product designed for people with Alzheimers disease.Anna

15、:Oh yes,I saw a TV show about that.It was invented by a student from New York called Kenneth.He even won an award for it at a science fair!Mike:Wow!How did he come up with the idea?Anna:Well,his grandfather has Alzheimers.He forgets things and gets lost easily.Once he got lost in the city and it too

16、k a whole day to find him!The family was always worrying about him leaving the house and had to keep an eye on him-even at night!Kenneth had been trying to find a solution.Then one night,he was looking after his grandfather and saw him get out of bed and step on the floor.That moment inspired him,an

17、d a good idea came to his mind.Mike:I didnt know that!How did that moment inspire him?Anna:Well,it made him think of putting a device into a pair of socks to sense pressure.He started by drawing his ideas,and then he thought about how to power the device.Eventually,he created a device the size of a

18、coin!Mike:Like a coin?So how does it work?Anna:He got his grandfather to wear the socks.When his feet touched the floor,the device sensed an increase of pressure,and a warning was sent to the boys mobile phone-like an alarm.That way,he could know his grandfather was getting out of bed without stayin

19、g up all night.Mike:How amazing!What a useful invention and caring grandson!Anna:Yes,you are quite right.Exclamatory sentences express strong emotions,such as surprise,shock,joy,emphasis and excitement.These are usually formed with what or how,and in written form usually end with an exclamation mark

20、.You are going to give a presentation about the invention of the telephone.As part of your research,you speak to Student B who has just read a book about it.Ask him/her questions to find out more information.Student AYouve just read a book about the invention of the telephone.Student A,who is going

21、to give a presentation on the same topic,asks you for information.Student BInformation youd like to know:the inventor year of invention the inventing process the first phone call other interesting things about the inventionStudent A Who invented.?When was invented?How was invented?What was the first

22、 phone call about?What other interesting things?Useful expressionsStudent B Inventor:Alexander Graham Bell Invention created in:1876 Background:Bell was a teacher at a school for the deaf.He tried to invent a machine to send messages over an electronic wire.This eventually led to the idea of a telep

23、hone.Later,with his assistant,he created a device to produce and receive sound waves using electrical signals.First phone call:On 10 March 1876,Bell made the first clear and complete phone call to his assistant,saying,“Mr Watson-come here-I want to see you.”Other information:Bell never had a telephone in his study,where he wanted to be alone with his thoughts and work.The telephone was invented by in Whenhe He later and finally The first phone call was about It is interesting thatUseful expressions