人教版 (2019)选择性必修 第一册Unit 5 Working the Land一等奖课件ppt

这是一份人教版 (2019)选择性必修 第一册Unit 5 Working the Land一等奖课件ppt，共35页。PPT课件主要包含了Ⅰ知识体系图解 ，organic，widespread，digest，essential，mineral　，grocery，instance，depth　，root等内容，欢迎下载使用。

alternative　
相应地;转而;依次;轮流
Ⅱ.释义匹配1.digest　　A.ne part f a situatin,idea,plan etc that has many parts2.essentialB.an example f smething that happens generally3.mineralC.t change fd in yur stmach int substances that yur bdy can use4.instanceD.extremely imprtant and necessary5.aspect E.a valuable r useful chemical substance which is frmed naturally in the grund答案:1.C　2.D　3.E　4.B　5.A
Ⅲ.阅读导学根据pp55—56课文内容,选择正确答案。1.Hw des the authr supprt his tpic?A.By using exact ding giving ding a des the wrd “them” in “wh digest them” refer t?A.Insects.D.Crps.
3.What d we knw abut crps grwn with chemical fertilizers?A.They dn’t taste dn’t have enugh water are rich in are mre natural waste frm animals in the fields can 　　　. A.bst yieldsB.make the sil richC.prevent crp diseasesD.harm peple’s health
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。
【词汇拓展】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,因为这会影响消化。
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。
【句式拓展】 pssible相当于 ne can,使用时需要注意can的变化。Yu shuld read mre and mre bks,as carefully as yu can!你要多看一点书,尽可能认真地看。
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。
【温馨提示】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。
Ⅰ.课文语法填空Chemical pesticides and artificial fertilisers have been in widespread use in farming 1.　　　　　 the middle f the 20th century,but scientists fund that their lng-term use can smetimes 2.　　　　　 harm t bth the land and peple’s health.In mst 3.　　　　　 (cuntry),sme pesticides like DDT have been prhibited because f the damage 4.　　　　　(cause) t peple and the envirnment. 
5.　　　　　(slve) the prblem,sme farmers have switched t rganic farming.They use natural waste frm animals as fertiliser instead 6.　　　　　 artificial fertilizers.By ding s,they make the sil in their fields 7. 　　　　　(rich) in minerals than befre.Many ther methds are als used t prduce rich sil.Farmers ften change the kind f crp grwn in each field every year.In this way,sme imprtant minerals 8.　　　　　 (put) back int the grund. Sme peple wuld prefer t stp the use f man-made chemicals in agriculture 9.　　　　　 (cmplete),but rganic farming can’t serve the high demand fr fd arund the wrld.S scientists have t find a suitable slutin 10.　　　　　 the prblem. 
Ⅱ.概要写作(根据教材语篇内容写一篇60词左右的内容概要)参考范文Thugh chemical pesticides and artificial fertilizers have been used widely in the wrld,(要点1)scientists fund using them fr lng can harm the land and peple’s health as well.(要点2) T slve the prblem,rganic farming cmes int being.(要点3) Hwever,rganic farming can’t meet the high demand fr fd arund the wrld,s a suitable slutin will have t be fund.(要点4)
假定你是中学生李华, 你校正在举办以“我最喜爱的农业科学家”为主题的征文活动。请你根据下面要点提示, 描述你所喜爱的农业科学家, 内容包括:1.谁是你最喜欢的农业科学家;2.这位科学家对人类所做的贡献;3.你的感想或希望。注意:1.词数80左右;2.可以适当增加细节,以使行文连贯。
一、审题定调1.确定体裁:本文为提纲式作文,要求考生根据提示信息,描述自己最喜爱的农业科学家。2.确定人称:由于是描述自己最喜爱的农业科学家,所以主要人称为第三人称。3.确定时态:时态以一般现在时为主。二、谋篇布局本文分为三个段落。第一段:开头应点明最喜爱的农业科学家,以袁隆平为例;第二段:主体部分介绍袁隆平的个人成就及对人类做出的突出贡献,此部分比较开放,只要发挥合理即可,如献身于水稻科研事业,成为农业先驱等;第三段:表达感想或希望,如向袁隆平学习等。