外研版 (2019)必修 第三册Unit 3 The world of science图文课件ppt

这是一份外研版 (2019)必修 第三册Unit 3 The world of science图文课件ppt，共41页。PPT课件主要包含了Grammar，Pair work ，III，Homework等内容，欢迎下载使用。
Vcabulary building
Listening & speaking
Lk at the sentences frm the reading passage(P29) 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.
Q1. What has happened t “yu” in sentence (a)?
Smene has asked “yu” abut the title f yur bk befre.
Q2. 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.
Q3. 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
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.
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.
Q4. 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.
以下情况一般使用被动语态
Present perfect passive
1. 不知道或者没有必要说明动作的执行者是谁。 Such bks have been written fr children. （已经为儿童编写这类图书了。）
2. 强调动作的承受者，而不强调动作的执行者。 All these prducts have been tested. （这些产品都经过测试了。）
3. 动作的执行者很模糊。 The letter has been pened. （这封信被人拆开了。）
4. 有时为了礼貌的需要，避免说出动作的执行者。 They have been tld many times nt t make nises. （已经有人多次跟他们说别那么大声了。）
Rewrite the underlined parts using the present perfect passive. (P29)
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 has been achieved t date is in medicine.
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!
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. (P29)
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.
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.
Cmplete the intrductins abut different scientists with the wrds in Activity 4. Pay attentin t the language that describes their careers. (P30)
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
Think abut ther careers in science and discuss what interests yu mst.
Listening & speaking
Did yu knw?
Listen t the cnversatin and number the pictures in the crrect rder. (P31)
Listen again and cmplete the ntes.(P31)
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.
Act ut the cnversatin abut the inventin f the telephne.Student A: Turn t Page 82. Student B: Turn t Page 85.
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
1. Summarize the usage f present perfect passive; 2. Chse anther stry f an inventin yu knw and have a similar cnversatin.