外研版 (2019)必修 第三册Unit 3 The world of science示范课课件ppt

这是一份外研版 (2019)必修 第三册Unit 3 The world of science示范课课件ppt，共58页。
Lead-in: What can yu get frm the vide?
GalileExperiments n the Leaning Twer f Pisa
NewtnGravity
Pre-reading: What d yu knw abut him?
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.
T encurage readers t questin this experiment.
Reading Tip: We recgnize the purpse by reading the title, first paragraph and last paragraph.
Pre-reading: What is the functin f the questin mark?
While-reading: Read the passage and find ut what Franklin's experiment aimed t prve.
Franklin's experiment aimed t prve that lightning was a frm f electricity.
While-reading: Read and match the main ideas.
Paragraph 1　 A. Questining accepted ideas.Paragraph 2 B. Benefits f the stries abut explring science. Paragraph 3 C. Benjamin Franklin’s famus experiment.Paragraph 4 D. Summing up the theme the text.Paragraph 5 E. Intrductin f the theme f the text.Paragraph 6 F. Nt everything abut the experiment is true.
While-reading: Read and fill in the experiment reprt.
Experiment Reprt
T prve if lightening was really prduced by electricity r smething else.
A kite with a string and a metal key.
Lightning was a frm f electricity.
A flash f lightning hit the kite. Electricity was cnducted t the key.
Franklin gt an electric shck.
Franklin tuched the key.
Franklin raised the kite.
Read and retell the experiment.
He raised the kite with a piece f string tied t it. A metal key was attached t the string. A flash f lightning hit the kite, and electricity was cnducted thrugh the string t the key. Franklin then tuched the key with his finger and gt an electric shck.
While-reading: What inspiratin can we get frm Franklin’s experiment?
We are inspired by his _____________ and his _________________________________________________.He als taught us _________________________________________________.
scientific apprach t lking fr the truth
the imprtance f scientific experiments
While-reading: What makes this experiment nt scientific?
Franklin culdn’t have tuched the key.
What the text says
What we knw
An inference
Reading Tip: Make an inference t discver untld infrmatin.
tuched the key
gt an electric shck
was cnducted thrugh the string
raised the kite
hit the kite
Hw much is true?
Nt 100% true
While-reading: Why is questining s imprtant t scientists?
Scientists ften questin accepted ideas because they want t establish the facts. Sme have even questined the stry abut the apple that fell n Newtn’s head and led him t cme up with his thery f gravity. In fact, mre than ne accunt suggests that while Newtn was certainly inspired by a falling apple, there is n prf that it hit them n the head.
establish facts.
Number the statements t shw hw peple's attitudes twards Franklin's experiment have changed.
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.
Pst-reading: Think & Share
1. D yu think it matters that Franklin's experiment might nt be true? Why?
N. Althugh it might nt be true, we are still inspired by his spirit f scientific explratin.
Yes. In science, facts shuld be mre imprtant than fictin.
2. What is yur pinin abut the statement “ shuld nt always believe everything we read r hear- even if it is a gd stry?
I think the statement is right. Frm a scientific standpint, peple shuld stick t the facts and the facts shuld be prved by experiments and research. A great stry is fictin which is ften mre interesting than the truth.
3. What qualities d yu think a great scientist shuld have?
A great scientist shuld have mre than ne gd quality, such as being smart, intelligent, hnest, bjective, persistent, brave, 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.
Wrk in grups. Explain yur understanding f the saying “Seeing is believing”, and then give a talk abut it. Yu may use infrmatin in the passage as examples.
Make ntes abut yur understanding f the saying and list supprting details.
Organise yur talk fllwing the steps belw.
 Start yur talk by explaining hw yu understand this saying. Explain why yu think this way. Use the ntes yu have made t supprt yur ideas. End yur talk by summarising yur pints.
Give yur talk t the class.
Language pints
Benjamin Franklin (1706-1790) was ne f the Funding Fathers f the United States and helped draft the Declaratin f Independence and the US Cnstitutin.本杰明·富兰克林(1706—1790)是美国的开国元勋之一,并帮助起草了《独立宣言》和美国宪法。◆ declaratin n.声明,宣告;申报;申报单,声明书【词汇拓展】declare vt.　　　　 宣布;声明;表明;宣称 declaratin f... 宣告……declare fr/against 表示赞成/反对…… declare war (n/against) (向……)宣战
Benjamin Franklin’s famus experiment with lightning has intrduced generatins f children t science.本杰明·富兰克林的有名的闪电实验让一代代的孩子们了解了科学。◆ experiment n.实验　v.实验【词汇拓展】experiment in　　　　做……方面的实验experiment n　　　 在……上做实验experiment with 以/用……做实验Dn’t experiment with such dangerus drugs.不要用这种危险的药物做实验。
A metal key was attached t the string.一把金属钥匙被绑在了绳子上。◆ attach v.系上;(使)与……有联系;认为……重要;把……附在……上【词汇拓展】　　　　将……附在……attach imprtance/significance/value t..认为……有重要性/意义/价值(t为介词)attached adj.依恋的;附属的;喜欢的 be attached t 喜欢;依附于;隶属于Sciety,schls and families shuld attach great imprtance t hardship educatin fr all students.社会、学校和家庭都应该重视对全体学生的艰苦教育。
A flash f lightning hit the kite,and electricity was cnducted thrugh the string t the key. 一道闪电击中了风筝,电通过绳子传到了钥匙上。◆ cnduct v.传导(热、电);实施;进行;指挥;引导　n.行为;举止;管理【词汇拓展】cnductr n.　　　　(乐队等)指挥;列车长;售票员cnductin n. 传导bad/gd cnduct恶劣的行为/良好的行为under the cnduct f在……指导/管理下cnduct neself 做人
The cre f educatin is t slve the prblem f hw t cnduct neself.
Under the cnduct f ur English teacher,ur English scres have imprved rapidly.
【迁移应用】翻译句子(1)教育的核心是解决如何做人的问题。(2)在英语老师的指导下,我们的英语成绩迅速提高。
But scientists all agree that if Franklin had actually tuched the key,he wuld certainly have died frm the electric shck. 但是科学家们都认为如果富兰克林真接触了钥匙,他肯定早就死于电击了。◆ die frm 死于
【词汇拓展】die away (尤指声音、光、风)逐渐消失,停止;自行消失die ut 灭绝,消失
【迁移应用】用适当的介/副词填空(1)Many villagers die every year 　　　　　snake bites. (2)The animals died 　　　　　starvatin in the snw. (3)The sund f the car died 　　　　　in the distance. (4)Many ld custms are dying 　　　　　. 
But scientists all agree that if Franklin had actually tuched the key,he wuld certainly have died frm the electric shck. 但是科学家们都认为如果富兰克林真接触了钥匙,他肯定早就死于电击了。【句式剖析】agree后面是that引导的宾语从句,宾语从句中包含了if引导的条件状语从句。宾语从句使用了虚拟语气,表示对过去情况进行不切实际的假设。表示与过去事实相反的假设时,条件状语从句的谓语动词用“had+过去分词”,主句中的谓语动词用“wuld/shuld/culd/might+ have +过去分词”。If yu had taken my advice,yu wuldn’t have failed in the examinatin.假若你听从我的建议,你就不会考试不及格了。
【句式拓展】(1)表示与现在事实相反的假设时,条件状语从句中的谓语动词用一般过去时 (be的过去式通常用were),主句中的谓语动词用“wuld/shuld/culd/might+动词原形”。(2)表示与将来事实相反的假设时,条件状语从句中的谓语动词用“were t/shuld+动词原形”,或用一般过去时,主句中的谓语动词用“wuld/shuld/culd/might +动词原形”。(3)当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时,通常被称为“错综虚拟语气”;动词的形式要依据它所表示的时间进行相应的调整。
(4)在条件句中,可以省略if,把系动词were、助动词had或情态动词shuld提到句首,成为倒装句式。(5)有时,虚拟语气中并不出现if引导的条件句,而用其他形式(比如withut,but fr)来代替条件句,通常称之为“含蓄虚拟语气”。
【迁移应用】单句填空(1)If I 　　　　　(have) a lt f mney,I wuld buy a big huse with a swimming pl. (2)If he had taken my advice,he 　　　　　(be) a scientist nw. (3)　　　　　 he had nt hurt his leg,Jhn wuld have wn the race. (4)Steve said that if he 　　 　　　(knw) hw it wrked,he wuld have tld me what t d. 
Sme have even questined the stry abut the apple that fell n Newtn’s head and led him t cme up with his thery f gravity. 有些人甚至质疑那个苹果的故事,故事中,苹果砸中了牛顿的头,从而促使他提出了他的重力理论。◆ cme up with 提出【词汇拓展】cme up　　 走近;上来;发芽;发生;被提出 cme abut 发生cme acrss 穿过(路、桥);(偶然)遇见;发现 cme ut 出来;(书等)出版cme t 苏醒;总计;达到;谈到 when it cmes t...当谈到……
【迁移应用】用适当的介/副词填空(1)N ne has cme up 　　　　　a cnvincing explanatin f why dinsaurs died ut. (2)When walking dwn the street,I came 　　　　　David wh I hadn’t seen fr years. (3)As sn as the prject came 　　　　　at the meeting,it attracted many peple’s attentin. 
In fact,mre than ne accunt suggests that while Newtn was certainly inspired by a falling apple,there is n prf that it hit him n the head. 事实上,不止一种说法表明,虽然牛顿的灵感确实来自一个掉落的苹果,但没有证据表明它击中了他的头部。◆ accunt n.论述,描述;账户;账目;考虑　v.认为,看作;解释,说明【词汇拓展】accuntant n. 会计;会计师keep an accunt f 记录 n accunt f 因为,由于take accunt accunt 考虑 n n accunt 绝不accunt fr 说明/解释……的原因;(数量、比例上)占
On n accunt can
take accunt f
【迁移应用】完成句子(1)缺钱是她辍学的原因。Lack f mney　　　　　　　her discntinuing her studies. (2)你绝不能向任何人提我的名字。　　　　　　　　　　　　　　　yu mentin my name t anyne. (3)在设计时,我们必须考虑到许多因素。In develping a design,we must　　　　　　　　　　　　　many factrs. 
In fact,mre than ne accunt suggests that while Newtn was certainly inspired by a falling apple,there is n prf that it hit him n the head. 事实上,不止一种说法表明,虽然牛顿的灵感确实来自一个掉落的苹果,但没有证据表明它击中了他的头部。【句式剖析】suggests后面是that引导的宾语从句,在从句中包含了while引导的让步状语从句和that(第二个)引导的同位语从句。while在此处意为“虽然;尽管”,表示让步,相当于althugh,通常位于句首。While/Althugh I admit his gd pints,I can see his shrtcmings.虽然我承认他的优点,但我还是能看到他的缺点。
【句式拓展】while作连词的用法:(1)while意为“而,然而”,作并列连词用,表示前后两者的对比。(2)while意为“只要”,表示条件。(3)while引导时间状语从句,从句中的动作或状态一般是持续性的。(4)while从句中的省略。当while从句中的主语与主句的主语一致,且含有be动词的某种形式时,从句中的主语连同be动词可同时省略。
【迁移应用】翻译句子(1)I’d like t study law at university while my cusin prefers gegraphy.(2)While I really dn’t like art,I find his wrk impressive.(3)Please dn’t talk s lud while thers are wrking.(4)While in Spain,I experienced a lt f strange custms.
我想在大学学法律,而我的表哥喜欢地理。
尽管我的确不喜欢艺术,但我觉得他的作品让人印象深刻。
别人在工作时,请不要高声谈话。
在西班牙的时候,我体验过很多奇怪的习俗。
Writing an experiment reprt
Read the instructins fr the experiment and answer the questins.
1.What d yu think the results f this experiment will be?The egg will squeeze int the bttle.2. What can yu learn frm this experiment?The experiment shws us the effects f air pressure. Air pressure indeed exists, and it is very pwerful.
Check the answers
Watch Egg in a Bttle Experiment
Cmplete the bxes with the infrmatin in Activity 5. D further research if necessary.
prve whether air pressure really exists
a biled egg, a glass bttle whse neck is a bit smaller than the egg, and sme ht water
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
Three parts
IntrductinIntrduce the aim f the experiment.
Main bdyDescribe the materials used in the experiment and explain the prcedures.
CnclusinReprt the results and what yu have learnt.
The experiment is designed / aimed prepared..., , then..., the experiment, I can draw a cnclusin that...
Useful expressins
Nw write a reprt f the experiment.
Reference Text
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.
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.
After the experiment I can draw the cnclusin that air pressure indeed exists, and it is very pwerful. It is the frce f the air that pushed the egg int the bttle.
Presenting ideas
Wrk in grups. Lk at the pictures and discuss hw these bjects have changed ver the years.
Chse ne f the bjects in Activity 1 r an bject that yu use every day. Predict hw it will further change ver the next 50 years.
Make ntes abut yur ideas.
My bject:__________________________________Hw it will change: __________________________________Why it will change: __________________________________
Present yur ideas t the class. Use the ntes in Activity 2 and the expressins in the bx t help yu .
It will becme…Peple will use … instead f …It will be … fr peple t …There will be n … because …
Review the language pints.Cmplete yur reprt.Finish yur presentatin.