2019-2020年高中英語 Unit4 Global warming Period 2優(yōu)秀教案 新人教版選修6.doc

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2019-2020年高中英語 Unit4 Global warming Period 2優(yōu)秀教案 新人教版選修6 教學(xué)內(nèi)容分析　　　 The emphasis of this period will be placed on the important new words，phrases and sentence patterns in Warming Up，Pre－reading，Reading，prehending and Discovering useful words and expressions in Learning about Language.There are altogether 53 new words and phrases in these five parts.20 of them are marked with triangles，which shows that the students neednt learn them by heart.It is enough to recognize them when meeting them while reading the passage.The other 33 should all be remembered，among which the following words and expressions are even more important：tend，range，subscribe to，go up，widespread，state，glance，steady，tendency，keep on，on the whole，quantity of，be opposed to，e about，result in，even if.They are all very useful and important.So are the sentence patterns “...it is a rapid increase when pared to other natural changes.” and “There is no doubt that the earth is being warmer...” We ought to pay more attention to them. 三維目標設(shè)計　　　 Knowledge and skills 1．To get the students to learn to use the following important new words and phrases freely：tend，range，subscribe to，go up，widespread，state，glance，steady，tendency，keep on，on the whole，quantity of，oppose，e about，result in，even if. 2．To get the students to understand and use the following important and useful sentence patterns： (1)．..it is a rapid increase when pared to other natural changes. (2)There is no doubt that the earth is being warmer... Process and methods 1．To help the students to understand the meanings of the above useful new words and expressions in the context，and then give some explanations about them，and at last offer some exercises to make students master their usages. 2．To ask the students to make up their own sentences by imitating the above sentence patterns. 3．At the end of the class，make students do more exercises for consolidation.In doing so，they can learn，grasp and use these important language points well. Emotion，attitude and value 1．To stimulate students interest in learning English. 2．To develop students sense of cooperation and teamwork. 教學(xué)重、難點　　　 1．Important new words and expressions：quantity of，oppose，e about，result in，even if. 2．Important and useful sentence patterns： (1)．..it is a rapid increase when_pared_to other natural changes. (2)There_is_no_doubt_that the earth is being warmer... 3．Some difficult and long sentences in the text. Step 1　Revision 1．Check the homework exercises. 2．Ask some students to talk about global warming. Step 2　Reading and finding Get students to read through Warming Up，Pre－reading，Reading，prehending and Discovering useful words and expressions in Learning about Language to underline all the new words and useful expressions or collocations in these parts.Read them aloud and copy them down in the exercise book. Step 3　Practice for useful words and expressions 1．Turn to Page 28.Go through the exercises in Discovering useful words and expressions with students and make sure they know what to do. 2．Give them several minutes to finish the exercises.They first do them individually，and then discuss and check them with their partners. 3．Check the answers with the whole class and explain the problems they meet where necessary. Step 4　Vocabulary study Ⅰ.簡單知識掃描 1．tend(P26) 【原句再現(xiàn)】 It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up. 這意味著更多的熱量被困在大氣層中，從而引起全球溫度上升。 【觀察探究】 (1)We sometimes tend to think that the ocean bottom is made up of smooth plains. 我們往往誤以為海底由平坦的平原構(gòu)成。 (2)People under stress tend to express their full range of potential. 處于壓力下的人容易發(fā)揮自己全部的潛力。 (3)Doctors and nurses tended(to)the injured.醫(yī)生和護士護理受傷的人。 【歸納總結(jié)】 tend vi.& vt.意思是“往往會，趨于，傾向；照料，護理”。作“照料，護理”講時，常與介詞to搭配。 【即景活用】 (1)救護車上的救護人員在照料受傷的工人。 Ambulance crews ______ the injured workers. (2)男孩往往比女孩個子高。 Boys ______ taller than girls. Suggested answers：(1)were tending(to)　(2)tend to be 2．range(P27) 【原句再現(xiàn)】 ...it will encourage a greater range of animals—all of which will make life for human beings better. 這將促進動物的生長——所有這一切都會使人類的生活變得更好。 【觀察探究】 (1)Maybe the question is beyond the range of human understanding. 或許這個問題超越了人類理解的范圍。 (2)You can see a range of mountains standing on the top of the tower. 站在塔頂你可以看到一系列山脈。 (3)The temperature ranges between ten and thirty degrees. 氣溫在十至三十度之間。 (4)I ranged the books on the shelf by/according to size. 我把書依大小順序排在書架上。 【歸納總結(jié)】 range n. 意思是“范圍；射程；山脈；行列”； v. 意思是“變化；排列；歸類于”，常用于range from...to...結(jié)構(gòu)，意為“從……到……范圍內(nèi)變化”。 【即景活用】 有年齡從七歲到十四歲的兩百個男孩。 There are two hundred boys ______________. Suggested answer：ranging from seven to fourteen in age 3．subscribe to(P26) 【原句再現(xiàn)】 All scientists subscribe_to the view that the increase in the earths temperature is due to the burning of fossil fuels like coal，natural gas and oil to produce energy. 所有科學(xué)家都贊同這樣的觀點：人們?yōu)榱松a(chǎn)能量而燃燒化石燃料(如煤、天然氣、石油等)，從而引起了地球溫度的升高。 【觀察探究】 (1)The children each subscribed 5 pence to buy a present for Nick in hospital. 孩子們每人出五便士為住院的尼克買禮品。 (2)All the people present subscribe to the opinion put forward by the chairman. 參加會議的人全部同意主席提出的意見。 (3)I have subscribed to that magazine for years. 我訂閱那本雜志已好幾年了。 【歸納總結(jié)】 subscribe to的意思有“捐款；捐助；同意，贊同；訂購(報紙、雜志等)”等。 【即景活用】 The government called on all the citizens to ______ a relief fund. A．subscribe to　　　　B．a(chǎn)gree to　　　　C．a(chǎn)mount to　　　　D．shift to Suggested answers：A 4．go up(P26) 【原句再現(xiàn)】 It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go_up. 這意味著更多的熱量被困在大氣層中，從而引起全球溫度上升。 【觀察探究】 (1)The elevator went up to the fourth floor.電梯升到了四樓。 (2)As you go up a mountain，you have to overe the earths gravity which pulls you down. 上山時你必須克服把你往下拉的地球引力。 (3)Prices of fruit and vegetables have gone up. 水果和蔬菜的價格上漲了。 【歸納總結(jié)】 動詞短語go up的意思有“升；攀登；向上去，沿(街)而去；漲價”等。類似意義的詞還有rise，increase等。其反義詞是：go down，fall down，decrease。 【即景活用】 (1)物價又上漲了。Prices ______ again. (2)到處都蓋起新的大樓。New buildings ______ everywhere. Suggested answers：(1)have gone up　(2)are going up 5．keep on(P27) 【原句再現(xiàn)】 Even if we start reducing the amount of carbon dioxide and other greenhouse gases，the climate is going to keep_on warming for decades or centuries. 盡管我們已經(jīng)開始減少二氧化碳和其他溫室氣體的排放量，但是在未來的幾十年或幾個世紀里氣候?qū)掷m(xù)變暖。 【觀察探究】 (1)The airplane kept on flying at a high altitude.這架飛機持續(xù)在高空飛行。 (2)He kept on smoking after the doctor told him to stop. 醫(yī)生勸告他戒煙，可他仍繼續(xù)抽。 (3)He is keeping on the house in his hometown.他把家鄉(xiāng)的那所房屋保留著。 (4)Keep straight on and youll e to the market.一直往前走就到市場。 (5)I have failed several times，but I still keep on. 我已經(jīng)失敗了好幾次，但我仍然堅持下去。 【歸納總結(jié)】 keep on意為“繼續(xù)(做某事)；不顧困難、反對或警告而堅持(做某事)；繼續(xù)前進，繼續(xù)工作”等。 【即景活用】 Even if I fail again，I will ______ working hard until I succeed. A．give up B．turn to C．keep on D．think of Suggested answer：C 6．on the whole(P28) 【原句再現(xiàn)】 On_the_whole the warming of the earth is a phenomenon that causes great concern. 大體上，地球變暖是一種引起巨大關(guān)注的現(xiàn)象。 【觀察探究】 The weather this month has been good on the whole. 這個月的天氣基本上是好的。 Living in town is pleasant but，on the whole，I like the country better. 住在城里是愉快的，但是，總的來看，我更喜歡農(nóng)村。 【歸納總結(jié)】 on the whole意為“總的看來；大體上；基本上”，相當(dāng)于in general，mostly，可位于句首、句中或句尾。 【即景活用】 翻譯句子 總的看來，我認為他那樣做是對的。 Suggested answer：On the whole，I think he was quite right to act as he did. Ⅱ.重點知識探究 1．oppose(P27) 【原句再現(xiàn)】 On the other hand，there are those，like George Hambley，who are opposed to this view，believe that we should not worry about high levels of carbon dioxide in the air. 另一方面，像喬治漢布利那些人，他們反對這種觀點，認為我們不應(yīng)該為空氣中二氧化碳含量高擔(dān)心。 【觀察探究】 Many members of the council opposed the building of the luxury houses in the centre of the city. 許多市議會議員反對在市中心建造豪華型住宅。 Many residents are opposed to the plan of building the motorway. 許多居民反對修建那條高速公路的計劃。 【歸納總結(jié)】 oppose vt.& vi.意為“反對；使對立；使對抗； 抗爭”，后面可直接跟名詞作賓語，也可用于be opposed to(doing)sth.結(jié)構(gòu)。 【詞匯辨析】 oppose，object和resist 三者都含有“反對”的意思，但是用法有區(qū)別。 oppose為常用詞，指“對某人、某事采取積極行動來反對”，著重動作，尤指“反對一種觀念、思想、計劃等”。如： The father opposed to his sons marriage.父親反對兒子的婚事。 object 常指“用言論或論據(jù)等表示反對”，著重“個人嫌厭”和“(由于與個人有關(guān)因此)提出反對意見”。如： I objected to his plan.我反對他的計劃。 resist 指“積極地反抗、對抗；用武力阻止……的前進”，如： The villagers were united to resist the enemy. 村民們團結(jié)起來抵抗敵人。 【即景活用】 我們堅決反對在國與國之間實行強權(quán)政治。 We ______ firmly ______ the practice of power politics between nations. Suggested answers：are；opposed to 2．e about(P26) 【原句再現(xiàn)】 So how has this e_about and does it matter？這種情況是怎么發(fā)生的，有什么影響？ 【觀察探究】 With the use of electricity，great changes have e about. 隨著電的使用，種種大變化發(fā)生了。 The accident es about in this way.這事故就是這樣發(fā)生的。 Many a quarrel has e about through a misunderstanding. 許多爭執(zhí)都是由于誤會產(chǎn)生的。 【歸納總結(jié)】 e about意為“發(fā)生，造成”，有時用it作主語，后面跟that引導(dǎo)的從句。 【詞匯辨析】 e about與happen，occur，take place的異同。 e about與happen，occur，take place同義。take place常指經(jīng)過安排的。happen指“偶然發(fā)生”，等于occur。happen to＋v.意為“偶然/碰巧做出”。 It happens/happened that－clause...碰巧…… occur/happen＋to(prep.)．..發(fā)生在…… occur＋to(prep.)．..想起…… It occur(－s/－ed)(to sb.)＋to do sth./that－clause想起，想到 【即景活用】 同義句轉(zhuǎn)換 She happened to be out when he called. A：It ______ that she ______ ______ ______ ______when he called. B：She ______not to be ______ when he called. C：It ______ ______ she was not at home when he calledSuggested answers：A：happened；was not at home　B：happened；home　C：came about 3．result in(P26) 【原句再現(xiàn)】 They also agree that it is the burning of more and more fossil fuels that has resulted_in this increase in carbon dioxide. 他們還一致認為，正是因為越來越多的化石燃料的燃燒才導(dǎo)致了二氧化碳的增長。 【觀察探究】 These measures resulted in a great victory. 由于采取了這些措施，打了一個大勝仗。 The plot resulted in failure.陰謀以失敗告終。 【歸納總結(jié)】 result in的意思是“產(chǎn)生，導(dǎo)致”，與 cause或lead to同義，其主語是起因；in的賓語是結(jié)果。result from的意思是“由……引起，產(chǎn)生”，與lie in，as a result of和because of同義，其主語是結(jié)果，from的賓語是起因。 【即景活用】 同義句轉(zhuǎn)換 (1)His failure resulted from not working hard enough. Not working hard enough______ ______his failure. (2)His sickness was caused by eating too much. A．His sickness ______ ______eating too much. B．He was ill ______he ate too much. C．______ ______ ______ ______ eating too much，he was ill. Suggested answers：(1)resulted in　(2)resulted from；because；As a result of 4．quantities of(P26) 【原句再現(xiàn)】 The problem begins when we add huge quantities_of extra carbon dioxide into the atmosphere. 當(dāng)我們把大量額外的二氧化碳排入大氣層的時候，問題就出現(xiàn)了。 【觀察探究】 (1)Quantities of food(nuts)were on the table.桌子上有許多食品(堅果)。 (2)Great quantities of sand were washed down the hillside by the rain. 雨水把大量的泥沙沖下山坡。 (3)He collected quantities(a quantity)of old pictures. 他收集了大量的舊畫。 (4)There is only a small quantity of wine left.只剩下很少一點酒了。 【歸納總結(jié)】 quantities of＝a quantity of，意為“大量的”，既可以修飾可數(shù)名詞，也可以修飾不可數(shù)名詞。quantities of無論修飾可數(shù)還是不可數(shù)名詞，后面的謂語動詞都用復(fù)數(shù)。 另外，quantity前面還可以加修飾成分，構(gòu)成的短語有a certain quantity of (一定數(shù)量的)，a large(great，good)quantity of(大量的)，a small quantity of(少量的……)，large(great，good)quantities of (大量的)，small quantities of(少量的……)。 【知識拓展】 (1)quantity 量，數(shù)量。如： Without quantity there can be no quality.沒有數(shù)量就沒有質(zhì)量。 The government has been buying silver in great quantities. 政府一直在大量購進白銀。 (in great/small quantities意為“大/少量”，用作狀語。) (2)表示“大量的”時，可用以下形式： ①修飾可數(shù)名詞 many，a great/large number of，great/large numbers of，a good/great many (后面沒有of)，many a(后接單數(shù)名詞，其謂語動詞也用單數(shù)形式) ②修飾不可數(shù)名詞 much，a great/large amount of，great/large amounts of，a great/good deal of ③既可以修飾可數(shù)名詞，也可以修飾不可數(shù)名詞 a lot of＝lots of，a quantity of＝quantities of，a mass of＝masses of，plenty of (前面沒有a) ▲這些短語均常被形容詞修飾，如：a large number of，a small amount of，a great quantity of。 ▲quantities of/amounts of＋不可數(shù)名詞＋復(fù)數(shù)動詞；a lot of/lots of/plenty of＋不可數(shù)名詞＋單數(shù)動詞。 ▲in amount/amounts/quantity/quantities/number意為“在數(shù)量上，大量地”。 【即景活用】 (1)We aim at quality rather than ______. A．number B．a(chǎn)mount C．figure D．quantity (2)With more forests being destroyed，huge quantities of good earth ______ each year. A．is washing away B．is being washed away C．a(chǎn)re washing away D．a(chǎn)re being washed away Suggested answers：(1)D　(2)D 5．even if(P27) 【原句再現(xiàn)】 Even_if we start reducing the amount of carbon dioxide and other greenhouse gases，the climate is going to keep on warming for decades or centuries. 盡管我們已經(jīng)開始減少二氧化碳和其他溫室氣體的排放量，但是在未來的幾十年或幾個世紀里氣候?qū)掷m(xù)變暖。 【觀察探究】 Even if it rained heavily，we still marched on.即使大雨傾盆，我們還是繼續(xù)前進。 Even if you are a good high－jumper，you jump no more than three meters. 即使是個優(yōu)秀的跳高運動員，你也跳不過三米。 We shall go，even if it rains.就是下雨，我們也要去。 【歸納總結(jié)】 even if有“雖然、即使、盡管”的意思，引導(dǎo)讓步狀語從句，可以與even though互換，語氣比although和though強，可以放在主句前面也可以放在主句后面。 【知識拓展】 though，although引導(dǎo)讓步從句的用法： though，although引導(dǎo)讓步從句時，后面的從句不能有but，但是可以用 yet。如： Although its raining，they are still working in the field. 雖然在下雨，但他們?nèi)栽诘乩锔苫睢? He is very old，but he still works very hard. 雖然很老了，但他仍然努力地工作。 Though the sore be healed，yet a scar may remain. 傷口雖愈合，但傷疤留下了。(諺語) 【即景活用】 (1)Well make a trip ______ the weather is bad. A．a(chǎn)s for B．even if C．because of D．a(chǎn)s long as (2)______she is young，she knows quite a lot. A．When B．However C．Although D．Unless Suggested answers：(1)B　(2)C Ⅲ.詞匯綜合運用 1．用括號中所給的單詞或短語翻譯下列句子。 (1)即使一個工人持續(xù)工作三十余年，他依然買不起房。(even if) (2)總起來說，中國的房價太高。而且房價還在持續(xù)增長。(on the whole；tend；keep on) (3)他們堅決要求把房價控制在一定的范圍內(nèi)。(range) (4)盡管政府已經(jīng)采取了一些措施，但是房價依然在上漲，這導(dǎo)致了許多問題。(although；go up；result in) (5)許多人想知道這是如何造成的。(e about) (6)他們反對政府采取的一些措施。(oppose) Suggested answers： (1)Even if a worker works continually for more than thirty years，he still cant afford a house. (2)On the whole，the price of houses in China is too high.And it tends to keep on rising. (3)They insist that the price of houses should be controlled within a range. (4)Although the government has taken some measures，the price of houses is still going up，which has resulted in many problems. (5)Many people want to know how it es about. (6)They oppose some measurements taken by the government. 2．連句成篇(按照一定的邏輯順序適當(dāng)調(diào)整句子的順序，把上面的句子連成一篇小短文，必要時增加適當(dāng)?shù)倪B詞。) ________________________________________________________________________ ________________________________________________________________________ Suggested answers： On the whole，the price of houses in China is too high.And it tends to keep on rising.Although the government has taken some measures，the price of houses is still going up，which has resulted in many problems.Even if a worker works continually for more than thirty years，he still cant afford a house.Many people want to know how it es about.They oppose some measurements taken by the government and insist that the price of houses should be controlled within a range. Step 5　Sentence focus 1．...but it is a rapid increase when_pared_to other natural changes.(P26) ……但是，同自然界的其他變化相比，這種升高是迅速的。 這是一個省略句，補全之后是．..but it is a rapid increase when it is pared to other natural changes。 一般說來，省略現(xiàn)象多出現(xiàn)在下列五種狀語從句中： (1)由 when，while，as，before，after，till，until，once等引導(dǎo)的時間狀語從句； (2)由whether，if，unless 等引導(dǎo)的條件狀語從句； (3)由 though，although，even if，whatever等引導(dǎo)的讓步狀語從句； (4)由 as，than 等引導(dǎo)的比較狀語從句； (5)由as，as if，as though 等引導(dǎo)的方式狀語從句。 上述狀語從句在省略時，并非任何成分都可以省略，而是遵循以下原則 (1)當(dāng)狀語從句的主語與主句的主語一致時，可以省略狀語從句的主語和系動詞be，這時從句中可出現(xiàn)如下結(jié)構(gòu)： ①連詞(as，as if，once)＋名詞。如： Once(he was)a worker，Pang Long now bees a famous singer. 龐龍曾經(jīng)是個工人，現(xiàn)在成了一位著名的歌手。 ②連詞(though，whether，when)＋形容詞。如： Work hard when(you are)young，or youll regret. 趁年輕要努力學(xué)習(xí)，要不然你會后悔的。 ③連詞(whether，as if，while)＋介詞短語。如： He looked everywhere as if(he was)in search of something. 他到處看似乎在找什么東西。 ④連詞(when，while，though)＋現(xiàn)在分詞。如： While(he was)holding talks with President Hu Jintao，US President George W．Bush thanked China for its important role in the Six－Party Talks. 在與胡錦濤主席會談時，美國總統(tǒng)布什感謝中國在六方會談中起的重要作用。 ⑤連詞(when，if，even if，unless，once，until，than，as)＋過去分詞。如： The exhibition is more interesting than(it was)expected. 這次展覽比被預(yù)料的有趣得多。 ⑥連詞(as if，as though)＋不定式。如： Olympic gold medalist hurdler Liu Xiang opened his lips as if(he were)to speak. 奧林匹克金牌獲得者跨欄運動員劉翔張開嘴，好像要說什么。 (2)當(dāng)從句的主語是it，謂語動詞中又含有系動詞be 時，可以把it和系動詞be一起省略。此時構(gòu)成連詞(if，unless，when，whenever)＋形容詞的結(jié)構(gòu)。如： Unless(it is)necessary，youd better not refer to the dictionary. 如果沒有必要，你最好不要查字典。 2．There_is_no_doubt_that the earth is being warmer...(P26) 毫無疑問地球正在變暖…… 在There is no doubt后?？筛鷗hat引導(dǎo)的同位語從句(在肯定句中，doubt后面有時可跟whether引導(dǎo)的從句)。 There is no doubt that you will succeed if you try your best. 毫無疑問如果你盡最大努力你一定會成功。 There is no doubt that he will e on time.他一定會準時來。 類似常用結(jié)構(gòu)： There is no knowing/telling...沒法知道/說…… There is no need...沒有必要…… There is no question...……是沒有問題的。 There is no reason...沒有理由…… There is no possibility that...……是沒有可能的。 It is no/small wonder that...(No wonder that)．..難怪…… It is a wonder that...……真奇怪/真是令人驚奇。 Step 6　Homework 1．Finish off the Workbook exercises.Do Exercise 1 in Using Words and Expressions in your exercise book. 2．Learn the useful new words and expressions by heart. Step 7　Reflection after teaching ________________________________________________________________________ ________________________________________________________________________