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

这是一份高中英语外研版 (2019)必修 第三册Unit 3 The world of science图文课件ppt，共35页。PPT课件主要包含了Reading，Who is he，Lead-in，被电击，Real ，Unreal ，were，诚然不可否认，Writing，Main body等内容，欢迎下载使用。

Benjamin Franklin
Activity 1 Read the intrductin t Benjamin Franklin.
Benjamin Franklin (1706–1790) was ne f the Funding Fathers f the United States and helped draft the Declaratin f Independence. Apart frm being a successful statesman, he was als well knwn as a leading American authr, printer and publisher, successful diplmat, creative scientist and inventr.
His Famus Experiment
I assume that Benjamin Franklin is a ... persn.In my pinin, maybe he is...
Activity 2 Read the passage and find ut what Franklin’s experiment aimed t prve.
T test if lightning was really prduced by electricity.
A kite with a string and a metal key
First, Franklin flew a kite with a string and a metal key.Then, when a flash f lightning hit the kite, electricity was cnducted thrugh the string t the key.Finally, tuching the key, Franklin gt an electric shck.
Lightning was a frm f electricity.
Para.1　 A. Questining accepted ideas.Para. 2 B. Benefits f the stries abut explring science. Para. 3 C. Benjamin Franklin’s famus experiment.Para. 4 D. Facts shuld be prved by experiments and researchPara. 5 E. Intrductin f the theme f the text.Para. 6 F. Nt everything abut the experiment is true.
Activity 3 Match the main ideas with each paragraphs.
Intrduce the theme f the passage
Explaine the theme in detail
Transitin t anther viewpint t further explain the theme
Franklin’s spirit f scientific explratin is still cnsidered an inspiratin. Peple are amazed at and inspired by Franklin’s experiment.Scientists questin what really happened in Franklin’s experiment.
Activity 3 Number the statements t shw hw peple's attitudes twards Franklin's experiment have changed.
1) D yu think it matters that Franklin’s experiment might nt be true? Why? eg N. Because what really matters lies in his bravery t d the experiment. 2) What is yur pinin abut the statement "…we shuld nt always believe everything we read r hear - even if it is a great stry"? eg Smetimes a really great stry may nt be true, and we need t have critical thinking.
3) What qualities d yu think a great scientist shuld have? eg I think a great scientist shuld be patient, serius, brave, careful, creative and imaginative…4) In what ways d scientists cntribute t sciety?Firstly, scientific discveries prmte the develpment f ur sciety. Secndly, the cntributins f scientists in medicine extend ur life span. Thirdly, scientists have invented a lt f surprising tls that fundamentally imprve ur living standards.
experiment with sth. 用某物实验experiment n sth. 对某物进行实验
perfrm/cnduct/d/make an experiment 做实验
instead f 代替,而不是(介词短语)
intrduce sb t… 使之了解认识
that 引导的表语从句, “that”无实意但起到连接作用，不可省略。
过去分词短语作宾补附在...上
“mre than ne/many a...＋单数可数名词”作主语时，尽管意义上是复数，但谓语动词仍用单数形式，符合语法一致原则。但是，“mre +复数名词+than ne”结构之后，谓语动词一般多用复数形式。
apprach t sth/ ding sth
be amazed by/at
but, with, alng with, tgether with，except，besides，as well as, etc. 谓语形式看前者，就远原则。
以r，，，nt als等连接的名词(代词)作主语时，谓语动词的单复数应根据就近一致的原则。
if 引导的真实条件句/非真实条件句?
If I were yu, I wuld wrk harder.If yu wrk harder, yu will succeed.If yu hadn’t stayed up late, yu wuld have arrive n time.If yu g t sleep early, yu will wake up early?If yu wrk hard, yu will make a frtune.If I were t be rich, I wuldn’t frget yu.
真实条件句表示提出的假设完全可以成为现实，因此谓语动词用陈述语气。非真实条件句表示所提出的假设实现可能性极小或与事实相反，所以谓语动词用虚拟语气。
if 引导的非真实条件句 非真实条件句表示所提出的假设实现可能性极小或与事实相反，所以谓语动词用虚拟语气。
If he harder, he wuld have passed the exam.If he __________here, he wuld give me sme advice.If it ________fine tmrrw, I will g uting.
(had studied)
“尽管”引导让步状语从句
Pre-writing
Read the instructins fr the experiment and answer the questins. (P46-5)
1. What d yu think the results f this experiment will be?2. What can yu learn frm this experiment?
The egg will squeeze int the bttle.
The experiment shws us the effects f air pressure. Air pressure indeed exists, and it is very pwerful.
Watch Egg in a Bttle Experiment
While-writing：Writing an experiment reprt
Cmplete the bxes with the infrmatin in Activity 5. D further research if necessary.(P47-6)
prve whether air pressure really exists。
First, I remved the shell f the egg. Then, I carefully pured sme ht water int the bttle, and shk the bttle gently. After a few minutes, I pured ut the ht water. Just at the same time, I quickly placed the egg n tp f the bttle
air pressure indeed exists, and it is very pwerful. It is the frce f the air that pushed the egg int the bttle
Summarize the structure f an experiment reprt.
an experiment reprt
Intrduce the aim f the experiment.
Describe the materials used in the experiment and explain the prcedures.
Reprt the results and what yu have learnt.
While-writing
Write an experiment reprt. Use the expressins in the bx t help yu. D further research if necessay.(P47)
Useful expressins:· The experiment is designed / aimed t...· I prepared..., including...· First..., then..., after...· After the experiment, I can draw a cnclusin that...
Pst-writing
Pair wrk: Use the checklist t give feedback n yur partner’s draft.
Share yur reprt!
Individual wrk: Edit yur draft and then share yur bigraphy with the class.(P47-7)
The experiment is designed t prve whether air pressure really exists. At the beginning f the experiment, I prepared the materials, including a biled egg, a glass bttle whse neck is a bit smaller than the egg, and sme ht water. With all the things prepared, the experiment began.
Reference Text
First, I remved the shell f the egg. Then, I carefully pured sme ht water int the bttle, and shk the bttle gently. After a few minutes, I pured ut the ht water. Just at the same time, I quickly placed the egg n tp f the bttle. T my amazement, the egg squeezed int the bttle at nce.