Unit 1 Section Ⅲ Developing ideas（课件PPT）-【优化指导】2024-2025学年新教材高中英语选择性必修第四册（外研版2019）

UNIT 1　Looking forwards Section Ⅲ　Developing ideas 栏 目 索 引 自主落实·掌握语言知识 熟读精思·研读文本精华 互动探究·精研核心知识 Ⅰ.重点词汇 1．_______ adj.复杂的 2．_______ v．(两条路)岔开，分开 3．___________ n．(长在大树下或周边的)下木层，下层灌木丛 4．________ adj.许多的，很多的 5．__________ n．(电视或电台的)商业广告 自主落实·掌握语言知识 complex diverge undergrowth numerous commercial UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 6．___________ n．可供选择的事物 7．_______ n．进退两难的境地，困境 8．_____ v．(由……)引起 9．____________ n．情况，情形 alternative dilemma arise circumstance UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 Ⅱ.拓展词汇 1．admit vt.承认→_________ n．允许进入(加入)；入场费；承认 2．participant n．参与者，参加者→participate v．参加，参与→_____________ n．参加，参与 3．think vt.想；思索；以为→thinker n．思想家；思考者→thought n．思想；想法→__________ adj.认真思考的，深思的→thoughtfully adv.沉思地；若有所思地 admission participation thoughtful UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 4．mix v．使混合→mixed adj.混合的；形形色色的→_______ n．混合；混合体 5．symbol n．象征；符号→_________ v．象征，代表→symbolism n．象征主义 6．affect vt.影响；(疾病)侵袭；(感情上)打动→affected adj.假装的→_________ n．喜爱，钟爱 mixture symbolize affection UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 Ⅲ.短语互译 1．做出决定，拿定主意__________________ 2．放过，放弃，错过(机会)_______ 3．(对原先的决定)犹豫，产生怀疑____________________ 4．推迟……，使……延期_______ 5．坚决拒绝……；彻底否决……_____________________ 6．仔细考虑，权衡________ make up one's mind pass up have second thoughts put off reject ...out of hand weigh up UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 7．insight into_____ 8．on a daily basis_____ 9．arise from________________ 10．turn down______________ 11．look back on _____ 洞察 每天 产生于；起因于 拒绝；调低 回忆 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 Ⅳ.重点句式 1．句型：not only ...but also ...不仅……而且…… 教材原句：It has in fact become one of the most famous American poems of all time，not only because of its natural style，but also because of its thoughtful insights into human nature. 翻译：________________________________________________________ _________________________________________________ 事实上，它已经成为美国历史上最著名的诗歌之一，这不仅是因为其自然的风格，还是因为其对人性的深刻见解。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 2．句型：状语从句的省略 教材原句：When reading The Road Not Taken，one cannot help but see in one's mind images of a peaceful wood deep within the countryside. 翻译：________________________________________________________ ___________ 阅读《未选择的路》总会让人脑海中不禁浮现出乡村深处宁静的树林。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 3．句型： it's unlikely that ...不可能…… 教材原句：Although the writer of the poem considers taking the other path another day，he knows it's unlikely that he will ever have the opportunity to do so. 翻译：________________________________________________________ ________________________ 虽然这首诗的作者考虑改天再探索另一条路，但是他也知道他不可能再有这样的机会。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 熟读精思·研读文本精华 Ⅰ.原文释译 The Road Not Taken Two roads diverged in a yellow wood， And sorry I could not travel both And be one traveler，long I stood And looked down one as far as I could To where it bent in the undergrowth； Then took the other，as just as fair， UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 And having perhaps the better claim， Because it was grassy and wanted wear； Though as for that，the passing there Had worn them really about the same， And both that morning equally lay In leaves no step had trodden black. Oh，I kept the first for another day! Yet knowing how way leads on to way， UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 I doubted if I should ever come back. I shall be telling this with a sigh Somewhere ages and ages hence： Two roads diverged in a wood，and I— I took the one less traveled by， And that has made all the difference. UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 Lines from the poem The Road Not Taken are often quoted① in speeches of all kinds.The poem has been set to music by a number of artists and used in numerous② television commercials③.It has in fact④ become one of the most famous American poems of all time⑤，❶not only because of its natural style，but also because of its thoughtful⑥ insights into human nature． UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ❶“not only ...but also ...”句式，表示“不仅……而且……”。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ❷When reading The Road Not Taken，one cannot help but see in one's mind images of a peaceful wood deep within the countryside.Paths in the woods are often used to symbolize⑦ how our lives progress and change.The lines “Two roads diverged in a yellow wood，/And sorry I could not travel both” give us a visual representation⑧ of the choices ❸that we face and the decisions ❹that we need to make．Life throws many alternatives⑨ at us on a daily basis.These range from the basic “What should I wear today？” to the key issues⑩ of what subject to study at university or what job to do after graduation.Of course，the greatest dilemmas⑪ arise⑫ from moral problems，❺when we are uncertain which choice results in ⑬ doing the right thing． UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ❷相当于when引导的时间状语从句when one is reading The Road Not Taken。 ❸、❹that引导定语从句，分别修饰先行词the choices和the decisions。 ❺when引导时间状语从句。其中which引导宾语从句。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ❻Whether big or small，❼what all our choices have in common is that they lead to specific consequences．Once we make a decision，in most circumstances⑭，there is no going back.❽Although the writer of the poem considers taking the other path another day，he knows it's unlikely that he will ever have the opportunity to do so.Like the writer，all ❾we can do is look backwards “with a sigh” and imagine what could have been. UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ❻作让步状语，相当于Whether it is big or small。 ❼what引导主语从句，谓语动词用单数。that引导表语从句。 ❽Although引导让步状语从句。主句中it为形式主语，真正的主语为后面的that从句。 ❾定语从句，修饰先行词all，关系代词that在从句中作宾语可以省略。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 This sigh，this wondering ❿whether we made the right choice，is understandable⑮.Although we may be free to choose which path to take，this choice isn't easy when those two paths look similar.Presented with two job offers，for instance，we may wonder exactly what it is we're choosing between.What if⑯，in choosing one，we are unknowingly turning down other future opportunities？Will we ever even find out⑰ whether we made the right choice? UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ❿同位语从句，修饰前面的“This sigh，this wondering”。 句中Presented with two job offers为过去分词短语作条件状语。后面what引导宾语从句。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 Ultimately⑱，the road ahead—the road through our lives—is a mixture⑲ of choice and chance.And when we are approaching⑳ the end of that road，how will we remember the journey？How will we look back on our lives？In the poem，the writer doubts his choice，thinking that in the future “ages and ages hence”，he may claim that he took the “less traveled” road．Some of us do take a more unusual path through life，and while it may be a harder one to follow，it can also lead to new adventures and experiences.Nonetheless，part of the art of UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 decision-making is learning to make the most of our decisions.Instead of looking back with regret，we should be facing our future with energy and optimism，for the choices are ours，and ours only． UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 现在分词短语作伴随状语。其中第二个that引导宾语从句，作动词claim的宾语。 and前后为并列句。do take为“do＋动词原形”结构，强调谓语动词。句中while引导让步状语从句。 for引导原因状语从句。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ◆难词注解 ①quote vt.& vi.引述；引用 ②numerous adj.许多的，很多的 ③commercial n．(电视或电台的)商业广告 ④in fact事实上 ※in point of fact 事实上；实际上 ※as a matter of fact事实上；其实 ⑤of all time有史以来 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ⑥thoughtful adj.认真思考的，深思的 ⑦symbolize v．象征，代表 ⑧representation n．表现；陈述 ⑨alternative n．可供选择的事物 ⑩issue n．问题；(报刊的)期号 ⑪dilemma n．进退两难的境地，困境 ⑫arise v．(由……)引起 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ⑬result in造成；导致；结果是 ※result from由……产生；因……引起 ⑭circumstance n．情况，情形 ⑮understandable adj.可以理解的；合情理的 ⑯what if 如果……怎么办 ※What's up？怎么了？ ※So what？那又怎么样？ ⑰find out 找出；发现；弄清 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ⑱ultimately adv.最后；最终；根本上 ⑲mixture n．混合；混合体 ⑳approach vt.& vi.接近；靠近n.方法；途径；接近 ※approach与to连用，表示“做某事的步骤、方法；……的通道、道路” while conj.在……期间；与……同时；然而；尽管 lead to导致；引起 nonetheless adv.尽管如此；但是 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 make the most of充分利用 instead of代替；作为……的替换 ※instead是副词，单独使用时，多放在句中或句末 optimism n．乐观；乐观主义 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 Ⅱ.文本理解 ►文章架构 Part 1：(Para.1) The (1)__________ of the poem Part 2：(Para.2～Para.4) The (2)___________________________ of the poem Part 3：(Para.5) How should we face our (3)______？ popularity appreciation and interpretation future UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ►细节探究 1．What can we conclude from Paragraph 1？(　　) A．The poem is famous because it describes the beauty of nature. B．The poem is very popular with people. C.The poem has close connection with commercials. D．The poem is the most famous American poem of all time. UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 2．What can't we infer from the passage？(　　) A．The poem is a very noted American poem. B．There are many choices around us. C．Once we make a decision，it is impossible to go back. D．We shouldn't look back with regret. UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 3．According to the passage，what attitude should we have in the face of future？(　　) A．Optimistic. B．Pessimistic. C．Indifferent. D．Cautious. UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 4．What does “it” mean in the sentence “ ...it can also lead to new adventures and experiences.” in Paragraph 5？(　　) A．A more unusual path. B．A new understanding of the poem. C.Another understanding of life. D．A way of making decisions. 答案：1～4 BCAA UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ►课文语法填空 The poem The Road Not Taken has become one of the most famous American 1._____(poem) of all time，not only because of its natural style，but also because of its thoughtful insights into human nature. When 2._______(read) the poem，one cannot help but see in one's mind images of a peaceful wood deep within the countryside.Paths in the woods 3.________(use) to symbolize how our lives progress and change.Of course，the greatest dilemmas arise 4.____ moral problems，when we are uncertain which choice results in doing the right thing. poems reading are used from UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 Whether big or small，5.____ all our choices have in common is that they lead to specific consequences.Although the writer of the poem considers 6.______(take) the other path another day，he knows it's unlikely that he will ever have the opportunity 7._____(do) so. Although we may be free to choose which path to take，this choice isn't easy when those two paths look similar.For example，when 8._________(present) with two job offers，we may wonder 9._______(exact) what it is we're choosing between. what taking to do presented exactly UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 Nonetheless，part of the art of decision-making is learning to make 10.___ most of our decisions.Instead of looking back with regret，we should be facing our future with energy and optimism. the UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 Ⅲ.教材熟词生义/一词多义 1．shift ①The night shift has just come off duty._________ ②She shifted her weight uneasily from one foot to the other._____ 2．admission ①Her silence was taken as an admission of guilt._____ ②The show will be open to the public at 2 p.m.；admission is $5._________ 轮班职工 转移 承认 入场费 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 3．complex ①They're planning to develop the whole site into a shopping complex. _______ ②It's a complex issue，but he only sees it in black and white. _______ 建筑群 复杂的 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 Ⅳ.教材续写积累 1．自然环境描写 When reading The Road Not Taken，one cannot help but see in one's mind images of a peaceful wood deep within the countryside. [仿写]单句填空/完成句子 ①The woods grew _______(thick)，______(dark) and scarier；the ground more wet and slippery. thicker darker UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ②我们沿着蜿蜒的山路走到树林边缘，在那里搭起了帐篷。 We _________________________________________________________，where we put up our tents. walked along the winding mountain path to the edge of the woods UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 2．主题升华 Some of us do take a more unusual path through life，and while it may be a harder one to follow，it can also lead to new adventures and experiences. [仿写]完成句子 生活像一条曲折的道路，充满意想不到的曲折和冒险，难以预料。 Life is a ______________________________，and adventures that nobody can ever predict. curvy path full of unexpected twists UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 1 admission n．允许进入(加入)；入场费；承认 I've been recommended for admission to study physics at my dream university. 我被推荐进入我梦想的大学学习物理。 互动探究·精研核心知识 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [要点突破] ①gain admission to/into 允许进入 ②admit v．承认；准许……进入(加入) admit sb./sth.to be＋n./adj.承认某人/某物是…… admit doing/having done sth.承认做/做过某事 admit (to sb.) that ...(向某人)承认…… admit sb.to/into ...准许某人进入(加入)/入学(入院) be admitted to/into被接收(入学/入院/入党等) be admitted as作为……被接受 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [写作佳句] As expected，my dream of being admitted into/to my favorite university finally came true. 正如预期的那样，我被我最喜欢的大学录取的梦想终于实现了。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [学以致用] 单句填空/同义句改写 ①Gaining _________(admit) to a key university is seen as a key to future success for some parents. ②She apologized to me and admitted ___________________(take) my umbrella by mistake. admission taking/having taken UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ③Only athletes who have reached the agreed standard for their event will be admitted __ competitors. ④You should have the courage to admit your mistakes. →You should have the courage to ________________________________． →You should have the courage to __________________________________. as admit making/having made mistakes admit that you make/have made mistakes UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 2 alternative n．可供选择的事物adj.可供替代的 Life throws many alternatives at us on a daily basis. 生活每天都会向我们抛出许多选择。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [要点突破] ①have no alternative/choice but to do sth.(＝can do nothing but do sth.)只能做某事；除了做某事之外别无选择 There's no alternative but to do sth.别无选择只好做某事。 ②alternatively adv.要不，或者 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [写作佳句] Failure is the mother of success.Sometimes，in order to succeed，we have no alternative but to face failure bravely and learn from it. 失败是成功之母。有时候，为了成功，我们别无选择，只能勇敢地面对失败并从中吸取教训。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [学以致用] 单句填空/一句多译 ①We could take the train or _____________(alternative) go by car. ②We shall have no alternative but ________(refer) the matter to our lawyer. alternatively to refer UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ③在这四面楚歌的情况下，他没有别的办法，只好暂时放弃他的计划。 →Finding himself under fire from all quarters，he could do nothing ___________ his scheme for the time being. →Finding himself under fire from all quarters，he _________________________________ his scheme for the time being. but abandon had no alternative/choice but to abandon UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 3 arise v．(问题或困境)发生，出现；(由……)引起 Of course，the greatest dilemmas arise from moral problems，when we are uncertain which choice results in doing the right thing. 当然，最大的困境往往源于道德问题，因为我们不确定哪种选择才是正确的。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [要点突破] arise from/out of产生于；起因于(＝result from) [写作佳句] Don't be shy about setting an example and use opportunities that arise to let others know what you are doing. 不要害怕成为榜样，要抓住机会，让人们知道你在做什么。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 arise/rise/raise arise vi.(arose，arisen)产生，发生；出现 rise vi.(rose，risen)升起，上升；起身 raise vt.(raised，raised)举起；提高；饲养 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [学以致用] 用arise、rise或raise的适当形式填空/完成句子 ①If you _____ any pets，please _____ your hands. ②Everybody ____ when he entered the room. ③Many questions also _____ in the cloning of dinosaurs. raise raise rose arose UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ④就像我们都知道的那样，事故往往起因于疏忽大意。 As we all know，accidents often ____________________． ⑤一次道路事故造成的伤害使他感到疼痛。 Injuries _____________________________ made him in pain. arise from carelessness arising out of/from a road accident UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 4 circumstance n．条件；状况；情况，情形；(尤指) 经济状况 Once we make a decision，in most circumstances，there is no going back. 在大多数情况下，一旦我们做出抉择，就没有退路。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [要点突破] ①in/under the circumstances在这种情况下；既然如此 ②in/under no circumstances决不；无论如何都不(位于句首时，句子要用部分倒装结构) [写作佳句] These circumstances were far from being ordinary so he was at a loss. 这些情况非同小可，所以他不知所措。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 circumstance意为“境况，(尤指) 经济状况”时，常用复数形式。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [学以致用] 单句填空/句式升级 ①In order to better adapt ourselves to new _____________(circumstance)，we must be ready and willing to acquire new skills and abilities. ②It might not be a perfect solution，but it's the best I can do ________ the circumstances. circumstances in/under UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ③We should do anything against the will of the people under no circumstances. →________________________________ anything against the will of the people.(倒装句) Under no circumstances should we do UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 5 mixture n．混合；混合体 Ultimately，the road ahead—the road through our lives—is a mixture of choice and chance. 最后，前方的路，也就是我们的人生之路，其实是由选择和机会交织而成的。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [要点突破] ①mix v．(使)混合，融合；调配；配制 mix ...with/and ...把……和……混合 mix up混淆；弄乱 ②mixed adj.混合的；混杂的 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [写作佳句] He is famous for mixing traditional Chinese music with western instruments. 他以将中国传统音乐与西洋乐器相结合而闻名。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [学以致用] 单句填空/完成句子 ①It's much better if you can sometimes mix business ________ pleasure. ②They looked at him with a _______(mix) of horror，envy，and awe. ③He said he had _____(mix) feelings about returning to land after floating so long at sea. with/and mixed mixture UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ④杰夫把两个鸡蛋打碎放在一个盘子里，加了一些牛奶。珍娜找到了面包，把两片面包放进鸡蛋混合物里。 Jeff broke two eggs into a plate and added in some milk.Jenna found the bread and ______________________________． put two slices into the egg mixture UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 6 qualified adj.合格的，胜任的 Match the headings to the sections and find out how qualified the applicant is for the job. 将标题与各部分相匹配，找出求职者胜任该工作的资格。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [要点突破] ①be qualified for sth./to do sth.有资格做某事；胜任做某事 ②qualification n．资格；资历；资格证；获得资格 have the qualification to do sth.有资格做某事 have the qualification for sth.具备某事的资格 meet qualifications符合条件 ③qualify vt.使具有资格；使合格 qualify sb.for sth./to do sth.使某人获得做某事的资格；使某人胜任做某事 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [写作佳句] With all these advantages，I hold the belief that I will be very qualified to be a volunteer. 有以上优势，我坚信我有资格做一名志愿者。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [学以致用] 单句填空/一句多译 ①The test will qualify you ________(teach) English. ②Mr.Li is not only a _________(qualify) teacher but also a good friend. ③After many years，he had the right ____________(qualify) to do the work. to teach qualified qualification UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ④我的英语很好，完全可以胜任这份工作。 →With a good command of English，_____________________________． (qualify) →With a good command of English，____________________．(fit) I'm quite qualified for/to do the job I'm quite fit for the job UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 状语从句的省略 When reading The Road Not Taken，one cannot help but see in one's mind images of a peaceful wood deep within the countryside. 阅读《未选择的路》总会让人的脑海中不禁浮现出乡村深处宁静的树林。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [情境探究] ①Be careful when (you are) crossing the road. 过马路时要小心。 ②As (he was) young，he learned how to ride a bike. 他年轻时就学会了骑自行车。 ③He won't go there with us unless (he is) invited. 除非受到邀请，否则他不会和我们一起去那儿。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [要点突破] 在本句中，When reading The Road Not Taken相当于When one is reading The Road Not Taken，为时间状语从句的省略形式。 ①时间状语从句的省略：引导时间状语从句的连词when、while、as、before、after、until/till、once等后面可以直接加形容词、名词、分词、介词短语等，构成时间状语从句的省略形式。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ②当时间、条件、让步、方式等状语从句的主语与主句主语一致(或从句的主语是it)，且从句的谓语含有be动词时，可以把从句的主语和be动词一起省略。 ③状语从句省略形式的结构：连词＋现在分词/过去分词/介词短语/名词/形容词/副词。 UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 [学以致用] 单句填空/句式升级 ①China's approach to protecting its environment while _______(feed) its citizens offers useful lessons for agriculture and food policymakers worldwide. ②Once _______(expose) to light，the film will be damaged and get useless. ③When _____(ask) why he came here，the boy kept silent. feeding exposed asked UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 ④While _______(wait) for the bus，I met an old friend. ⑤While she was in France，the girl picked up some French. →_______________，the girl picked up some French. ⑥If I were given more time，I could have done it better. →________ more time，I could have done it better. ⑦If it is necessary，you can buy a map to help you. →____________，you can buy a map to help you. waiting While in France If given If necessary UNIT 1　Looking forwards 英语　选择性必修　第四册　W 返回导航 课时梯级训练(三) 谢 谢 后缀-ture表示行为、行为的结果以及与行为有关之物。 mix→mixture　advent→adventure fix→fixture　architect→architecture $$