英语外研版 (2019)Unit 3 The world of science课文内容课件ppt

这是一份英语外研版 (2019)Unit 3 The world of science课文内容课件ppt，共23页。PPT课件主要包含了Lead in，be done，Assignment等内容，欢迎下载使用。
What can rbts d in the vide?
T cnclude, rbts have been designed t help peple in many fields.
Using language
. First please watch a vide clip and find ut what can rbts d?Build cars fit in small place and d sme dangerus thingsHspital rbts delivery rbtsHelp clean the huseS we can cnclude that rbts have been designed t help peple in many fields
Identify the tense
1.Fill in the blanks.
In the last decade, rbts have been emplyed (emply) acrss varius industries. They have been designed (design) t perfrm tasks mre efficiently and accurately than humans. With advancements in technlgy, these rbts have been prgrammed (prgramme) t perate autnmusly, minimizing human errr. As a result, many jbs that were previusly dne by peple are nw being dne by machines. Despite cncerns ver jb displacement, the integratin f rbts has been seen (see) as a necessary step twards imprving prductivity.
Nw,please lk at yur paper sheet,read mre infrmatin abut rbts and fill in the blanks. Yu can discuss with yur partner. Yu have tw minutesOk let’s read it tgether
2.What is the structure f the tense?
In the last decade, rbts have been emplyed acrss varius industries. They have been designed t perfrm tasks mre efficiently and accurately than humans. These rbts have been prgrammed t perate autnmusly, minimizing human errr. The integratin f rbts has been seen as a necessary step twards imprving prductivity and efficiency.
has /have been dne
Nw,please lk at these fur sentences, d yu find sme similar structure? Pay attentin t the wrd in green. Yes they are in the same structure has have been dne. Well dne,
Understand the tense
1.What is the tense made up f?
Present perfect passive
have/has been dne
Present perfect
Present passive
have/has dne
Actually we call this tense present perfect passive(现在完成时的被动语态)，Nw can yu guess what is the tense made up f ?Actually we can divide the tense in t tw part, first is the have/ has been is present perfect, and be dne is the present passive. S present perfect passive is a cmbinatin f present perfect and present passive
2.Cmpare the sentences and finish the bxes.
Rbts have emplyed acrss varius industries. Rbts are emplyed acrss varius industries. In the last decade, rbts have been emplyed acrss varius industries.
in the past
result r effect
After knwing the frm ,let’s learn the meaning f the tense. Please cmpare the sentences and finish the bxes.2mins g.Any vlunteers, in sentense1 when the actin started ?when ended? The vice is …des it fcus n result r result?S nw we nw, present perfect passive is tense that started in the past and ended nw, vice is passive, and fcus n result r effect.
3.What adverbial f time are ften applied in the tense?
1) The machine hasn’t been sent fr yet.
2) The technlgical prblem has already been slved.
3) Technlgical prblems f the rbts have been discussed fr nearly tw hurs.
Nw, let’s learn when we shuld use the tense Please lk the three sentences, find ut the adverbial f time
1. Lk at the sentences frm the reading passage and answer the questins.
a I guess yu have been asked abut the title f yur bk befre.b New inventins like 3D printers have been used t make replacement hearts and bne parts.
1 What has happened t “yu” in sentence (a)?
Smene has asked “yu” abut the title f yur bk befre.
1 Read abut the inventins frm famus nvels and chse thse that have becme a reality.
1 Wh has used new inventins t make replacement hearts and bne parts in sentence (b)?
Peple have used 3D printers t make replacement hearts and bne parts.
Cmpare them with the fllwing sentences and answer the questins.
c I guess smene has asked yu abut the title f yur bk befre.d Peple have used new inventins like 3D printers t make replacement hearts and bne parts.
3 What is the difference between the tw grups f sentences?
In the first grup, the wrds in bld shw the use f the passive frm with the subjects, while in the secnd grup, the wrds in bld shw the use f the active frm with the subjects.
4 Why des the authr chse t use the passive frm instead f the active frm in the reading passage?
The authr chses t use the passive frm instead f the active frm t emphasis what has been dne, rather than wh r what des the actin.
Nw lk fr mre sentences with these structures in the reading passage.
This evening, I’ll be talking t Dr Richard Fairhurst, whse new bk The New Age f Inventin has just been published.
In additin, imprtant advances have been made in medicine and envirnmental science thanks t increasing cmputer pwer.
I’ve als been tld that yu’re an inventr yurself.
Nthing like this has been invented yet and I’d say we’re a lng way frm an inventin like that at the mment.
2 Rewrite the underlined parts using the present perfect passive.
Within the next 80 years, ur lives may be changed beynd recgnitin by 3D printing. It has already affected many things in ur lives, right dwn t the fd we eat. Fr instance, sme restaurants in Lndn have served 3D-printed hamburgers t custmers. But perhaps the mst significant success that peple have achieved t date is in medicine. They have made human bdy parts, including a beating heart, with 3D printing technlgy. And it is nt just humans wh are benefitin- in Brazil, peple have given a new 3D-printed shee t a turtle injured in a frest fire.
It has already affected many things in ur lives, right dwn t the fd we eat. Fr instance, sme restaurants in Lndn have served 3D-printed hamburgers t custmers.
Many things in ur lives have already been affected.
3D-printed hamburgers have been served t custmers in sme restaurants in Lndn.
But perhaps the mst significant success that peple have achieved t date is in medicine. They have made human bdy parts, including a beating heart, with 3D printing technlgy.
But perhaps the mst significant success that has been achieved t date is in medicine.
Human bdy parts, including a beating heart, has been made with 3D-printing technlgy.
And it is nt just humans wh are benefitin- in Brazil, peple have given a new 3D-printed shee t a turtle injured in a frest fire.
A new 3D-printed shell has been given t a turtle injured in a frest fire.
3 Imagine yu are Dr Mre. Lk at the pictures and tell the plice abut the damage and lss t yur lab. Use the present perfect passive where apprpriate.
The lck n the dr has been lcked.
The windw has been brken.
My tw laptps have stlen.
Beakers and test tubes have been destryed.
The bk case has been penend, and sme files have taken away while thers have been thrwn everywhere.
The rbt has been damaged.
1.D yu think ChatGPT will change ur lives? What aspects f ur lives will it change? Watch the vide and write dwn yur pinin , using present cntinuus passive as many as yu can.(n less 80 wrds)