高中英语Unit 3 The world of science教学ppt课件

这是一份高中英语Unit 3 The world of science教学ppt课件，共34页。PPT课件主要包含了Kopernik等内容，欢迎下载使用。
Lead-in: Describe the pictures with present perfect tense.
He has finished his hmewrk.
Smene has brken the cup.
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。
He has taught in ur schl fr 30 years.
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。
1. I guess yu have been asked abut the title f yur bk befre.2. I guess smene has asked yu abut the title f yur bk befre.3. New inventins like 3D printers have been used t make replacement hearts and bne parts.4. Peple have used new inventins like 3D printers t make replacement hearts and bne parts.
Lead-in: Cmpare the sentences and find ut the difference.
找出下面句子的谓语结构，哪些是主动？哪些是被动？
Present perfect tense
1.现在完成时谓语结构
have/has dne
have/has been dne
2.常连用的时间状语有： recently , fr+段时间，since +时间状语(从句)，these days, s far, up t nw, in/ during/ ver the last/ past few years/mnths/ weeks/hurs
Present perfect passive
1. 表过去开始的被动动作一直持续到现在
His Chinese has been imprved alt since he came t China.
The rad has already been built fr mre than ne year.
2. 表某被动动作对现在造成的影响或结果
happen, take place,break ut, belng t, cst,last等不及物动词或词组无被动语态。
Great changes havetaken place in China since1978.
① Lk at the sentences frm the reading passage and answer the questins.
1. What has happened t “yu” in sentence (a)?
Smene has asked “yu” abut the title f yur bk befre.
2. 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.
3. What is the difference between the tw grups f sentences?
Grup(a, b)___________________________.Grup(c, d)___________________________.
passive frm with the subjects 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 emphasise what has been dne, rather than wh r what des the actin.
② Rewrite the underlined parts using the present perfect passive.
Many things in ur lives have already been affected.
But perhaps the mst significant success that has been achieved t date is in medicine.
3D-printed hamburgers have been served t custmers in sme restaurants in Lndn.
Human bdy parts, including a beating heart, have been made with 3D printing technlgy.
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.
1. The lck n the dr has been brken.2. The windw has been brken. 3. My tw laptps have been stlen. 4. Beakers and test tubes have been destryed. 5. The bk case has been pened, and sme files have been taken away while thers have been thrwn everywhere.6. The rbt has been damaged.
Careers in science
④ Lk at the pictures and answer the questins.
1. What d yu knw abut these careers?2. What famus scientists can yu name in these fields?
A physicist is a persn wh des research cnnected with physics r wh studies physics.
A mathematician is a persn wh is trained in the study f numbers and calculatins.
A chemist is a persn wh des research cnnected with chemistry r wh studies chemistry.
An astrnmer is a scientist wh studies the stars, planets, and ther natural bjects in space.
A gegrapher is a persn wh studies gegraphy r is an expert in it.
A bilgist is a persn wh studies r wrks in the field f bilgy.
Famus scientists in these fields
Albert Einstein
Learning t learn
Wrds abut different careers in science can be frmed by adding -er, -ist r -ian at the end f the wrds abut subjects, eg bilgy - bilgist.
⑤ Cmplete the intrductins abut different scientists with the wrds in Activity 4. Pay attentin t the language that describes their careers.
Gu Shujing (1231-1316) was a famus Chinese 1 ______________ f the Yuan Dynasty. He invented twelve new instruments t study stars and planets. He als develped a calendar which is as accurate as the Gregrian calendar. A muntain n the Mn and a minr planet are named after him.
British 2 ___________ Charles Darwin (1809-1882) is best knwn fr his wrk On the Origin f Species, in which he explains changes in species due t natural selectin. His ideas deeply influence ur understand- ing f the relatinship between humans and nature.
Li Dayuan (CA 466-527) was a famus writer and 3_____________ f the Nrthern Wei Dynasty. He did field research acrss China and studied mre than a thusand rivers and streams, alng with the landscape, histry and culture f the surrunding areas.
Marie Curie (1867-1934) was a wrld-famus 4 __________ and was first awarded the Nbel Prize in 1903 fr her extrardinary wrk n radiactivity. She was als regarded as a brilliant 5 __________, and was again awarded the Nbel Prize in 1911 fr the islatin f pure radium.
Chen Jingrun (1933-1996) was ne f the wrld’s leading 6 ________________. His wrk n Chen’s Therem made an imprtant advance twards prving Gldbach’s Cnjecture, the greatest unslved prblem in number thery.
mathematician
⑥ Wrk in pairs. Think abut ther careers in science and discuss what interests yu mst.
I’m interested in the wrk f a(n)... because...
Inventin stries
Did yu knw?Alzheimer’s disease is a brain disrder that causes prblems with memry, thinking and behaviur.The majrity f peple with Alzheime’s are 65 and abve. It is recgnised as the mst cmmn mental disease amng lder peple, and the number f sufferers is grwing. Currently, there’s n cure fr Alzheimer’s, but scientists are researching ways t imprve the quality f life fr peple living with the disease.
⑦ Listen t the cnversatin and number the pictures in the crrect rder.
⑧ Listen again and cmplete the ntes.
a pair f scks designed fr peple with Alzheimer’s diseases
a student frm New Yrk
His grandfather
gets ut f bed
Talk abut hw the speakers describe the stry behind an inventin. Listen again if necessary.
Exclamatry sentences express strng emtins, such as surprise, shck, jy, emphasis and excitement. These are usually frmed with what r hw, and in written frm usually end with an exclamatin mark.
⑨ Wrk in pairs. Act ut the cnversatin abut the inventin f the telephne.
Student A: Turn t Page 106. Student B: Turn t Page 110.
Telling the stry behind an inventinThe telephne was invented by ... in he later, and finally first phne call was abut is interesting that ...
Useful expressins
Summarize the usage f present perfect passive Chse anther stry f an inventin yu knw and have a similar cnversatin.