新教材高中英语Unit5AdelicateworldUsinglanguage课件外研选择性必修第二册

Unit5

AdelicateworldUsinglanguage语法精讲·深化学习it作形式宾语【情境探究】ititit一、动词+it+that从句1.sb.find/believe/think/feel/consider/make+it+n.+todo/that从句,如:*MissGreenthoughtitagreathonortobeinvitedtospeaktoallofus.格林小姐认为被邀请为我们所有人演讲是一件很光荣的事情。*Theprofessorconsidersitnogoodreadingwithoutunderstanding.这位教授认为阅读而不理解没有益处。*Weallthoughtitapitythattheconferenceshouldhavebeencanceled.会议取消了,我们都感到很遗憾。2.sb.find/think/make+it+adj.+todosth./that从句(宾语从句)*Idon’tfeelitdifficulttounderstandthemathproblem.我觉得理解这道数学题并不难。Hethoughtitabsolutelysenselessattemptingtheimpossible.想做不可能的事情,他认为这是完全没意义的。*(2018·全国卷Ⅰ)Inhisintroduction,hemadeitclearthatourcreditswouldbehard-earned.在他的介绍之中,他清楚地表明我们的学分不会轻易地获得。【巧学助记】6123结构

6指的是句中常用的六个谓语动词:think/believe/consider/feel/find/make;1指的是形式宾语;2指的是宾语补足语的两种形式:形容词或名词;3指的是真正宾语的三种形式:不定式,动名词或that引导的宾语从句。二、动词+prep.+it+that-从句*Towinthetrustoftheemployees,yourfactoryshouldseetoitthataccountsandoperationsareastransparentaspossible.为了赢得员工的信任,你的工厂应该确保账目和操作尽可能透明。*Youmaydependonitthatweshallalwayshelpyou.你尽管放心,我们会随时帮你的。【名师点津】能用于此结构的动词不多,常见的有seeto,lookto,insiston,stickto,dependon,answerfor等。that引导的宾语从句不能直接作介词的宾语。【名师点津】由及物动词与介词组成的固定搭配中,宾语从句若作该动词的宾语时,须借用it。常见的有takeitforgranted,bringittosb.’sattention,oweittosb.等。*Weoweittoyouthattherewasn’taseriousaccident.多亏了你,才没有发生严重事故。2.sb.+appreciate/prefer+it+if从句*(2019·全国卷Ⅰ)Iwouldappreciateitifyoucouldtakemyapplicationintoconsideration.如果你能考虑我的申请我将不胜感激。*I’dpreferitifIdidn’thavetodosomuchwork.要是我不必做那么多工作就太好了。itittomakefortalking【语法主题应用】用it作形式宾语的句型简要介绍一下你对环境保护的看法。1.我认为保护环境非常重要。2.以前我们总是理所当然地认为自然资源取之不尽,这对大自然造成了巨大的伤害。3.现在,大部分人感到保护环境,节约资源很紧迫。4.我们一定要确保采取有效措施阻止污染。5.我认为保护我们的地球是每一个人的责任。Ithinkitimportanttoprotecttheenvironment.Butwetookitforgrantedthattheresourcesareendless,whichcausedgreatharmtothenature.Now,mostofthepeoplefeeliturgenttoprotecttheenvironmentandsaveresources.Therefore,weshouldseetoitthateffectivemeasuresshouldbetakentopreventpollution.Atlast,Ithinkitourdutytoprotecttheearth.

tolearnittomemorisewhentomasterstudyingthatspendingmoreconfident主题活动·话题实践Ⅰ.话题词汇1.relyon 依赖,依靠2.preyon 捕食,掠夺3.feedon 以……为食4.primaryconsumers 初级消费者5.breakdown 分解6.takein 吸收7.contributeto 有助于,促成8.dueto 由于9.beresponsiblefor 为……负责任10.thefoodchain 食物链11.ecologicalbalance 生态平衡12.release...from 把……从……中释放出来Ⅱ.话题情境A:Dad,welearntsomethingabout1._____________(食物链),butIcan’tfollowit.

B:OK,boy.I’llexplainittoyou.Forexample,plants2.______(吸收)sunlighttogrow;thegrasshopper(蚂蚱)eatstheleavesofaplant;thenafrogeatsthegrasshopper;afisheatsthefrog;atlast,thebeareatsthefish.Justlikethepicturebelow.

sunlight→plant→grasshopper→frog→bearA:Isee.Isee.Whatwillhappeniftherearemorebears?

thefoodchaintakeinB:Youknow,thewholenatureisagreatfoodchain.Ifthenumberofbearsincreases,theywill3._______(捕食)morefish,andthenthenumberoffishwilldecrease,whichwillaffectthenumberoffrogs,andatlast,thewhole4.________________(生态平衡)willbebroken.

A:Soit’snecessaryforusto5._______________________(保持自然界的平衡),isn’tit?

B:Ithinkso.Protectingthenatureisprotectingourselves.A:I’lltrymybesttoprotectthenatureandI’llcallonmyclassmatestodoso.B:Goodboy.Comeon!

preyonecologicalbalancekeepthebalanceofnatureⅢ.情境句式1.Whatdoyouthink?/Howabout...?/Howareyoufinding...?/What’syouropinion?你觉得呢?/……怎么样?/你觉得……如何?/你的看法是什么?2.Youmustbekidding.你在开玩笑呢。3.I’mserious.我是认真的。4.Accordingtothestatistic...根据统计数据……5.Idon’tbelieveit.我不相信这件事。6.Youcancheckitoutforyourself.你可以自己去看看。7.Iholdtheviewthat/AsfarasI’mconcerned...我认为……8.Iagreewithyou/Idon’tagreewithyou.我同意你的观点/我不同意你的看法。Ⅳ.情境交流学生们正在就麻雀在自然界中的重要性展开讨论……Teacher:Oneoftheoldestspeciesintheecosystem,thesparrowhasbeeninexistenceformillionsofyears.Whatwillhappenifsparrowsdieout?Student1:Ithinkwithoutsparrows,wehumanbeingswoulddieout.Student2:1.__________________.(你一定在开玩笑呢。)

Student1:2.__________(我是认真的).Asweallknow,sparrowsfeedonpests,soifthesparrowsdieout,thenumberofpestswillincreasesharply,thenaffectingthecropyield.Wehumanbeingswon’thaveenoughfoodtoeat.Atlast,wewilldieout.

YoumustbekiddingI’mseriousStudent3:But3.____________________________(我依然不相信你所说的).Sparrowscan’thavesuchagreatinfluenceonus.

Student1:Ifyoudon’tbelieve,4.____________________________(你可以自己去查查).

Student3:OK.IwillsearchsomeinformationontheInternetandIwillshareitwithyoutomorrow.Student