高中英语人教版 (2019)选择性必修 第一册Unit 5 Working the Land教案配套课件ppt

这是一份高中英语人教版 (2019)选择性必修 第一册Unit 5 Working the Land教案配套课件ppt，共24页。PPT课件主要包含了organic，chemical，词汇拓展等内容，欢迎下载使用。
Teaching bjectives:
1. Enable students t knw the difference between chemical farming and rganic farming.2. T knw the structure f an argumentative essay .3. T knw the writing skills f an argumentative essay, such as illustrating, giving examples r making cntrast.4. T write an argumentative essay using what they will learn in this perid.
Step 1 Task 1 Making predictins1.Lk at the title f the passage and try t guess what will be talked in the passage. 2.If yu were asked t write the passage under this title, what is yur structure?
What the text will talk abut will include: the definitins f bth kinds f farming and the advantages and disadvantages f each.
The structure f the text
rganic farming
chemical farming
Step II Test ur predictinRead the text quickly and silently and try t find what is the main idea f each paragraph. And then draw the map f the _____________________________________________________________Para.3_____________________________________________________________Para.4 _____________________________________________________________Para.5 _____________________________________________________________
Chemical farming help fight crp disease and increase prductin. (advantage)
Three disadvantages f chemical farming. (disadvantages)
The definitin f rganic farming and ne f its advantages. (advantage)
Other different methds f rganic farming and their advantages. (advantages)
The disadvantage f rganic farming and shw t the readers the attitude f the writer. (disadvantage & attitude)
Step III Reading fr detailsRead the text carefully and cmplete the table.
fight crp disease and increase prductin
harmful bacteria and insects
helpful nes
the animals and humans wh digest them
air, sil, water and crps
the envirnment r t peple’s health
meet the need
find a suitable slutin
Step IV Reading fr the rganizatin and languageTask 1 Read the text carefully again and find ut the transitinal wrds and think abut their functins.Task 2 Discuss the fllwing ther advantages and disadvantages f rganic farming did the authr nt list?2.Which kind f farming d yu like? And why?
Fr example; nt als; in additin; in turn; in fact; as fr; ...,but...; ..., well.
Advantages: rganic fd are mre nutritius and have much flavur. Farmers can get mre mney ut f rganic farming. Disadvantages:higher cst f prducing fd; greater effrt required t farm.
I like rganic farming. Because rganic fd are mre delicius and mre healthy.
Step V Writing an argumentative essay giving yur pinin n chemical r rganic farming. Task 1 Cmplete the utline belw.Tpic sentence: In my pinin, ___________farming is preferable t __________farming because ________________________________________Pint1___________________________________________________________(Detail) ________________________________________________________Pint2___________________________________________________________ (Detail) _________________________________________________________Pint3___________________________________________________________(Detail) _________________________________________________________Cnclusin: ______________________________________________________
chemical farming des harm t nt nly the envirnment but als peple
Chemical farming harms the envirnment
Chemical pesticides are nt fund in nature, and nrmal natural prcesses cannt get rid f them
Chemical farming harms us peple
We end up eating plants, diary prducts, eggs, and meat that have high levels f pesticides
Organic fd is generally mre nutritius than fd grwn with man-made chemicals
Chemicals are cmmnly used in farming t grw larger crps mre quickly.
I wuld like t suggest buying rganic fd.
Task 2 Use yur utline t write a shrt essay giving yur pinin n the tpic, paying attentin t using right transitinal wrds.Task 3 Exchange psters with anther pair. Use this checklist t give them helpful feedback.√ Des the writer d a gd jb f expressing his/her pinin?√ Des each paragraph have ne main idea?√ Des each paragraph have at ne detail t supprt its main idea?√ Des the writer sequence the pints in lgical rder?√ Des the writer d gcd jb persuading yu t accept his/her pinin?Task 4 Plish yur drafts and share with yur partners.
Language Pints
alternative　
相应地;转而;依次;轮流
1.in turn相应地;转而;依次;轮流digest vt.& vi.消化　vt.领会;领悟【教材原句】This affects the crps grwn n the land and,in turn,the animals and humans wh digest them.这影响到种在土地上的庄稼,进而影响动物和消化这些作物的人。【词汇精讲1】in turn相应地;转而;依次;轮流She asked the same questin f everyne in turn.她依次向每一个人问同样的问题。In the city squares the nen lights flashed in turn.在城市广场上,霓虹灯依次闪烁。
During the summer hlidays,the teachers were n duty by turns.暑假期间,老师们轮流值班。When it is my turn,I realized why the prcess was mving s slw.当轮到我的时候,我明白进程为什么这么慢了。
【词汇精讲2】digest vt.& vi.消化　vt.领会;领悟He has t avid fat because his bdy can’t digest it.他不得不避免吃脂肪,因为他的身体无法消化它。I need sme time t digest infrmatin.我需要一些时间来理解信息。【词汇拓展】N liquids are served with meals because they interfere with digestin.上饭菜时不要同时上汤水或饮品,因为这会
2.essential adj.完全必要的;极其重要的【教材原句】They may lk beautiful n the utside,but inside there is usually mre water than essential minerals,and they ften have less flavur as well.它们可能外表看起来很漂亮,但里面通常有更多的水,而不是必要的矿物质,而且它们的味道通常也更差。【词汇精讲】essential adj.完全必要的;极其重要的Even in small cmpanies,cmputers are an essential tl.即使在小公司里,计算机也是必不可少的工具。French and German are deemed essential.法语和德语被认为是必不可少的。
【词汇拓展】It is essential that we (shuld) deal with the prblem.我们很有必要处理这个问题。It is essential t knw where the prblem lies.有必要知道问题在哪里。
3.alternative n.可供选择的事物　adj.可供替代的;非传统的【教材原句】As an alternative,sme farmers have switched t rganic farming,and many custmers have turned t rganic fd when they shp at the lcal grcery.作为一种选择,一些农民转向了有机农业,许多顾客在当地商店购物时转向了有机食品。【词汇精讲】alternative n.可供选择的事物　adj.可供替代的;非传统的He gave in nly at the last mment because he had n alternative.他只是在最后一刻因为没有选择才做了让步。
We will have t rely mre n alternative energy,such as slar and wind pwer.我们将不得不更多地利用可代替的资源,比如太阳能和风能。
【词汇拓展】If he wants t g t Hng Kng tnight,he has n alternative but t g by air.如果他今晚想去香港,除了坐飞机外别无选择。
4.instance n.例子;实例;事例【教材原句】Fr instance,they may grw crn r wheat in a field ne year,and then grw beans there the next.【词汇精讲】instance n.例子;实例;事例There have been several instances f vilence at the schl.在学校有几起暴力事例。I can cite quite a few instances t illustrate this.我可以举出好几个例子来说明这件事情。
【词汇拓展】She has mastered several freign languages,fr instance,French.她精通几种语言,例如法语。
1.Therefre,there is still a lng way t find a suitable slutin that puts sufficient fd n the dinner table while keeping peple and the envirnment as healthy as pssible.因此,要找到一个合适的解决方案还有很长的路要走,该方案可以在餐桌上提供足够的食物,同时又要尽可能保持人和环境的健康。【句式剖析】本句是一个复合句。there is still a lng way...是主句,that puts...是定语从句,while keeping是省略句。 pssible尽可能……。Please respnd t me as quickly as pssible.请尽快给我回信。He desired that his bk be read by as many peple as pssible.他希望有尽可能多的人读他的书。
2.In fact,sme pesticides like DDT have been prhibited in mst cuntries because f the damage they cause t peple and the envirnment.事实上,在大多数国家,像滴滴涕这样的杀虫剂已经被禁止,因为它们对人和环境造成了损害。【句式剖析】because f因为……,是介词短语,常用作原因状语,后面跟名词或代词作宾语。My brther didn’t pass the driving test exam because f his laziness.由于我弟弟的懒惰,他没有通过这次驾驶考试。The sprts meeting has been put ff because f the bad weather.由于天气不好,运动会被推迟了。
because是连词,其后接句子;because f 是复合介词,其后接名词、代词、动词的-ing、what 从句等,它在句中不用作表语。 The teacher gt angry because f what we had dne in class. 老师由于我们课上做的事情生气了。 We decided nt t climb the muntains because it was raining heavily. 正下着暴雨,所以我们决定不去爬山了。