Unit 5 Using language （ppt课件）-2023新外研版（2019）《高中英语》选择性必修第一册.pptx

1、 Using languageUsing language Unit 5 Revealing natureLead-in根据50页课文内容填空1.It was a young man who _ _(leave)medical school without completing his degree.2.Whats more,he _recently _(receive)a letter from his father predicting that.3.After Darwin _ _(spend)some time in South America,his room on the ship

2、 was crowed with samples of the plants and animals he _ _(collect).had lefthadreceivedhad spenthad collectedLead-in根据50页课文内容填空4.At that time,people believed that all species _ _(appear)on Earth at the same time,and _not _(change)since.5.Darwin suspected that the finches _ _(evolve)from a common ance

3、stor,which _ _(arrive)on the islands a long time before.6.Many people refused to believe that living things,including humans,_ _(evolve)from lower forms of life.had appearedhad changedhadevolvedhad arrivedhad evolvedPresentationRead and answer:a Darwin suspected that the finches had evolved from a c

4、ommon ancestor,.b Many people refused to believe that living things,including humans,had evolved from lower forms of life.1 In sentence(a),which action happened first,“suspected”or“evolved from a common ancestor”?“Evolved from a common ancestor.”2.In sentence(b),which action happened first,“refused

5、to believe”or“evolved from lower forms of life”?“Evolved from lower forms of life.”PresentationRead and answer:a Darwin suspected that the finches had evolved from a common ancestor,.b Many people refused to believe that living things,including humans,had evolved from lower forms of life.3.What does

6、 the structure had done indicate?It indicates the action happened before a certain past action.A.基本结构：基本结构：助动词助动词 had+过去分词过去分词When I got to the station,the train had left.助动词助动词had过去分词过去分词肯定结构：主语肯定结构：主语+_ _否定否定结构：主语结构：主语+_ _ _被动被动结构：主语结构：主语+_ _ _had donehad not donehad been done B.基本用法：基本用法：表示在过去表示在

7、过去的的某某一一时间或时间或某一某一动作动作之前之前 完成的动作或存在的状态。即完成的动作或存在的状态。即“过过去的去的 过去过去”。例：例：Before I could say“thank you”,he had run away.我还没来得及说谢谢，他就跑开了。B.基本用法：基本用法：表示表示从过去某一时间开始，一直延续到从过去某一时间开始，一直延续到过去的另一个时间的动作，常用的时间过去的另一个时间的动作，常用的时间状语状语有有by then,by the end of+过去过去时间点时间点,by+过去时间点过去时间点,by the time,before+过去时间点过去时间点。例：例：

8、By the end of last term,we had learnt 2,000 English words.到上学期期末为止，我们已经学习了2000个英语单词了 B.基本用法：基本用法：表示表示愿望、打算等动词，如愿望、打算等动词，如hope,want,expect,think,mean,suppose,intend,plan等后接从句时，一般用过去完成时表示等后接从句时，一般用过去完成时表示本打算实现而未实现的愿望和计划。本打算实现而未实现的愿望和计划。例：例：我原打算今年去度假，可是我走不开。I had hoped to take a holiday this year but I

9、 was not able to get away.B.基本用法：基本用法：在句型在句型hardly/scarcely.when和no sooner.than中，主句用过去完成时，从句用一般过去时，表示“一就”。例：No sooner had he sat down than the telephone rang.他一坐下，电话铃就响了。我刚离开就开始下雨了。Hardly had I left when it began to rain.B.基本用法：基本用法：5.在句型This/That/It was the first/second.time that 主语+had done 中，表示“这

10、是.第几次做.”。Eg:It was the second time that she had seen the film.这是她第二次看这部电影。B.基本用法：基本用法：6.在虚拟语气中常用过去完成时，常见于If only.(要是.就好了）,I wish.句式中，表达过去未实现的愿望或假设。Eg:If only you had told me that you had a spare ticket for the show.要是你告诉我，要是你告诉我，你有多余的演出票就好你有多余的演出票就好了了.Eg:I wish I had studied hard in the middle schoo

11、l.我多希望我在初中时努力学习我多希望我在初中时努力学习了了.Eg:I would have caught the first bus if I had got up earlier.如果我早点起来，就能赶上早班车了。如果我早点起来，就能赶上早班车了。随堂随练1.He said that he _(see)you before.2.By yesterday they _(work)for six days.3.When I came to Guangzhou,he _(be)there for a long time.4.By the middle of last month we _(liv

12、e)in Beijing for five years.5.When she got home her children _(sleep).6.Before they arrived here the film _already _(start).had seenhad workedhad beenhad slepthad livedhadstarted用所给词的适当形式填空。随堂随练7.I _(intend)to meet him at the airport,but I had an important meeting to attend.8.Mr Smith_(die)yesterday

13、.He had been a good friend of mine.9.No sooner had he arrived than he _(go)away again.10.It was the third time that he _(be)out of work.11.He entered the room,_(turn)on the light and read an evening paper.12.If only I _(buy)the book.There is none in the bookshop.had intendeddiedwentturnedhad beenhad

14、 bought用所给词的适当形式填空。Practise what you have learnt.By the end of last year,he_ (collect)more than 100 foreign records.He once_(work)as a lecturer,but now he is a manager.John and Jane _h(know)each other for a long time before their marriage.He said that great changes_ h(take)place in his hometown sinc

15、e 1990.had collectedworkedhad knownhad taken Practise what you have learnt.He _l(leave)school three years ago.I_(live)in Beijing for one year.His brother_ (be)the conductor of the orchestra for many years.This was the second time that the musician_(tour)Europe.lefthave livedhas beenhad toured Comple

16、te the paragraphs with the information from the given sentences.1 a Natural disasters led to food shortages in the 1960s.b Yuan Longping began to do research on hybrid rice.c Yuan Longping developed a better type of rice.Yuan Longping 1_ to do research on hybrid rice because natural disasters 2_ foo

17、d shortages in the 1960s.In the end,he 3_ a better type of rice.began had led todevelopedhad madeComplete the paragraphs with the information from the given sentences.2 a Gregor Mendel chose to study pea plants because their characteristics were easy to control.b Gregor Mendel made important discove

18、ries about genetics.c Gregor Mendel died in 1884.Gregor Mendel 4_ study pea plants because their characteristics were easy to control.By the time of his death in 1884,he 5_ important discoveries about genetics.chose toPracticeComplete the paragraphs with the information from the given sentences.Prac

19、tice1.began2.had led to3.developed4.chose to5.had made Yuan Long ping was born in Beijing in 1930.After he graduated from university in the early 1950s,he dedicated himself to the research of agriculture.Yuan had the idea to create a new breed of rice in the 1960s.Since then,he has worked tirelessly

20、 to research and develop better rice breed.In 1973 he and his collaborators managed to cultivate a hybrid rice species that was superior to many others.This species produced 20 per cent more rice per plant than the commonly grown varieties.For his achievements and contributions,Yuan is known as the“

21、father of hybrid rice”and was awarded the Medal of the Republic in 2019.Gregor Mendel(1822-1884)was an influential botanist.Mendel worked out the basic principles of heredity by experimenting with plants.In 1866,he published his findings,showing how invisible“factors”(now known as genes)are responsi

22、ble for predictable visible traits.As a result of his work,he became known as the“father of modern genetics”.Complete the online encyclopaedia entry with the correct form of the words in the box.Compete decline eatLive introduce arrivehad livedeatenhad introduced competed declinedarrived Lonesome Ge

23、orge was the last Pinta Island tortoise.He died in 2012.After Georges death,the Pinta Island tortoise was declared extinct.The extinction of the Pinta Island tortoise blamed on humans.Before humans 1_ on the island,the species 2_ in isolation and 3_ the plants that naturally grew there.George was di

24、scovered many years after their arrival,and by then humans 4_ new species that 5_ for the food the tortoises ate.After goats in particular had been brought to the island,the Pinta Island tortoise population 6_.Eventually,only George remained.Act out a role-play about George using the information in Activity 3.Use the past perfect tense where appropriate.Work in pairs:the keeper of Lonesome Georgethe reporter