新教材高中英語UNIT3CONSERVATIONPeriod1TopicTalk課件

1、UNIT 3CONSERVATIONPeriod OneTopic Talk課前自主預(yù)習(xí)1_n保護(hù)2_adj.塑料制的3_vt.破壞；毀掉4_n采礦業(yè)5_n一項，一條6_v再利用，回收利用7_adj.不可回收的conservationplasticdestroyminingitemrecycleunrecyclable重點單詞8_adj.有教育意義的；知識性強(qiáng)的9_n威脅；(災(zāi)難等壞事)發(fā)生的可能10_v轉(zhuǎn)換，改變11_adv.非法地，違法地12_adv.獵取，獵殺13_adj.滅絕的，絕種的14_adv.非常地，極端地15_adj.緊急的，急迫的informativethreatswitch

2、illegallyhuntextinctincrediblyurgent1正如你所知道的那樣_2為了，以便_3轉(zhuǎn)變，轉(zhuǎn)換_4盡快地_重點詞塊as you knowin order toswitch toas soon as possible5的數(shù)量_6減少_7扮演角色，起某種作用_8盡自己的職責(zé)_9對有害處_the amount ofcut downplay a role/part indo ones partbe bad for1(P108)It was by Professor Linda Wei, the environmental expert, _ ？那是環(huán)境專家琳達(dá)魏教授做的，不是

3、嗎？【答案】wasnt it重點句式2(P109) there will be no rhinos _ in the world in 20 years.20年后，世界上將沒有犀牛。【答案】left課堂新知講練1threat n威脅；(災(zāi)難等壞事)發(fā)生的可能(P108) After the lecture, I can see that the use of oil and coal is one of the biggest threats to our planet. 【翻譯】講座結(jié)束后，我明白了石油和煤炭的使用是對我們星球最大的威脅之一。詞匯拓講【語言提升】threat n威脅(可用作可

4、數(shù)和不可數(shù)名詞)to make threats against sb.對某人進(jìn)行威脅under threat受到威脅She is prepared to carry out her threat to resign.她準(zhǔn)備好辭職。He received death threats from someone unknown.他收到了來自不明人士的死亡恐嚇。There is a real threat of war.確有可能發(fā)生戰(zhàn)爭。 These ancient woodlands are under threat from new road developments. 新道路開發(fā)可能對這些古老的

5、林地造成破壞。He is unlikely to be a threat to the Spanish player in the final. 相信他不會在決賽中對這位西班牙運動員形成威脅。 Drugs pose a major threat to our society.毒品成為對社會的一大威脅。threaten to do sth.威脅要做某事threaten sb.with sth.用某物威脅某人threaten (that)威脅The incident threatens to ruin his chance in the election.這件事威脅到他當(dāng)選的機(jī)會。He threa

6、tened to take them to court.他揚言要把他們告上法庭。He was threatened with dismissal if he continued to turn up late for work.他受到警告，如果繼續(xù)上班遲到，就會被解雇。The man became angry and threatened that he would call the police.那個男人生氣了，威脅說要去報警?！驹~匯拓展】threaten vt.威脅到；危及；威脅，恐嚇threatening adj.恐嚇的，威脅的threatened adj.受到威脅的【溫馨提示】-en作

7、后綴可用于構(gòu)成動詞，常表示“使，使成為，變得”等含義。常見的此類動詞還有：shorten 使縮短；deepen加深，使變深；broaden使變寬，加寬；sharpen使鋒利，削尖；strengthen加強(qiáng)；frighten使害怕。【針對練習(xí)】單句語法填空(1)Wildlife has been greatly _(threat) in the modern age.(2)Our neighbor threatened _(call) the police if we didnt stop the noise.(3)Some cultures see direct eye contact as

8、impolite or _(threaten) behavior, while Americans see it as a sign of genuineness and honesty.(4)To avoid knee pain, you can run on soft surfaces, do exercises to _(strength) your leg muscles, avoid hills and get good running shoes.【答案】(1)threatened(2)to call(3)threatening(4)strengthen2switch vi.&vt

9、. 轉(zhuǎn)換，改變(P108109) We definitely need to switch to different forms of power as soon as possible. 【翻譯】我們確實需要盡快轉(zhuǎn)換到不同形式的能源?！菊Z言提升】switch to切換到，變成To keep fit, you can switch to morning or lunchtime exercise. 為了保持健康，你可以轉(zhuǎn)變到早上或午間鍛煉。Please switch to the news channel. Id like to watch the news program. 請轉(zhuǎn)換到新聞頻道

10、。我想看看新聞。switch onturn on打開(電器)What happens when you switch on a computer?當(dāng)你開啟電腦時，它發(fā)生了什么？switch off關(guān)閉(電器)；不再想著；不再注意；失去興趣When I hear the word “football” I switch off.我聽見“足球”兩個字就膩味。Have you ever forgotten to switch off the TV or computer?你忘記過關(guān)閉電視或電腦嗎？Remember to switch off the electricity before you st

11、art to repair the washing machine.修理洗衣機(jī)之前務(wù)必記得切斷電源。switch over換臺，換頻道I dont want to watch this program. Please switch over.我不想看這個節(jié)目。請換一個臺。switch (from A) to B (由A)轉(zhuǎn)變成BNow she has switched from a student into a housewife. 現(xiàn)在，她由一個學(xué)生變成了一個家庭主婦?！菊Z境助記】Lucy got home from work early. After changing clothes, s

12、he switched off the light and came to the living room. Then she switched on the TV and switched it over to Channel 10露西早早下班回到家，換完衣服后，她關(guān)燈來到客廳。然后她打開電視，轉(zhuǎn)到第10頻道?！踞槍毩?xí)】單句語法填空(1)Please _ the radio to listen to news and the weather forecast.(2)Be sure to _ the light when you leave the office.(3)Wed better

13、take the train into the city center, then a bus, _ the tram(有軌電車), then maybe a taxi.(4)This play is too boring. Will you please _ to CCTV 5 to watch the live football match?【答案】(1)switch on(2)switch off(3)switching to(4)switch over3cut down削減，砍倒(P109)I think we should cut down the use of unrecyclab

14、le plastic to protect our planet.【翻譯】我認(rèn)為我們應(yīng)該減少使用不可回收塑料來保護(hù)我們的地球。【語言提升】(1)cut down砍倒(及物動詞)Deserts are also formed because people cut down trees and dig up grass.人們伐樹掘草也會造成土壤沙化。(2)cut down還可以表示“減少”，其后面也可以直接賓語。cutdown (to) 減少(至)cut down on減少(在某個方面的開支)My uncle hasnt been able to quit smoking, but at leas

15、t he has cut down.我叔叔還未能戒煙，但至少他已經(jīng)少抽了。We need to cut the article down to 1,000 words.我們得把這篇文章壓縮到1 000詞。Cut down on fatty foods if you want to lose weight.你如果想減肥，就得少吃高脂食物。cut構(gòu)成的其他短語：cut up切碎cut off砍下cut in插話；插入cut out切掉；刪去；關(guān)掉【針對練習(xí)】單句語法填空(1)Experts think the amount of homework for the students should b

16、e _.(2)The water supply has been _ temporarily because the workers are repairing one of the main pipes.(3)It is impolite to _ when other people are talking.(4)I have been advised to _ the poem from my article.【答案】(1)cut down(2)cut off(3)cut in(4)cut out1(P108) It was by Professor Linda Wei, the envi

17、ronmental expert, wasnt it?【翻譯】那是環(huán)境專家琳達(dá)魏教授寫的，不是嗎？【句式解讀】本句是一個反意疑問句，由陳述部分“It was by Professor Linda Wei, the environmental expert”和反意疑問部分“wasnt it”構(gòu)成。句式解讀【句式提升】反意疑問句由陳述部分和反意疑問部分組成。其中反意疑問部分用于表示反問、疑問或強(qiáng)調(diào)等。反意疑問句的基本用法如下：(1)反意疑問句的構(gòu)成：“肯定的陳述部分否定的反意疑問部分”或“否定的陳述部分肯定的反意疑問部分”。(2)反意疑問部分的主語：一般用與前面陳述部分的主語一致的人稱代詞(3)回

18、答：對“否定的陳述部分肯定的反意疑問部分”的肯定回答仍然用yes，否定回答用no，但是yes譯為“不”，no譯為“是的”。 He hasnt finished his homework, has he?他還沒有完成作業(yè)，是嗎？Yes, he has./No, he hasnt.不，他完成了。/是的，他還沒有完成?！練w納拓展】反意疑問句的其它常見情況：(1)當(dāng)陳述部分的主語是everybody, everyone, someone, nobody, somebody等時，反意疑問部分的主語通常用they。Everyone knows the answer, dont they? 大家都知道答案，

19、不是嗎？(2)陳述部分為含有定語從句或主語從句的主從復(fù)合句時，反意疑問部分的主語和謂語一般同主句的主語和謂語保持一致。He is not the man who gave us a report, is he? 他不是給我們做報告的那個人，是嗎？(3)當(dāng)陳述部分為there be結(jié)構(gòu)時，反意疑問部分仍由there和be來構(gòu)成。Theres no water, is there? 沒有水了，是嗎？(4)當(dāng)陳述部分中有seldom, hardly, never, few, nothing, little等表示否定意義的詞時，反意疑問部分用肯定形式。You have nothing against

20、it, have you?你沒有什么反對的，對嗎？(5)當(dāng)陳述部分是 “I/wethink/believe/suppose/expect賓語從句”時，反意疑問部分的主語和謂語往往與從句的主語和謂語保持一致，但要注意否定轉(zhuǎn)移。I dont think he is a suitable man for the job, is he?我認(rèn)為他不是做那項工作的合適人選，不是嗎？(6)“祈使句反意疑問部分”型反意疑問句中，反意疑問部分一般用“will you”。Have a little more coffee, will you?再來點咖啡，好嗎？Dont close the door, will y

21、ou? 別關(guān)門，好嗎？(7)以Lets開頭的祈使句對應(yīng)的簡略問句用shall we；以let us開頭的陳述句對應(yīng)的簡略問句用will you。Lets meet at the school gate, shall we?我們校門口見，好嗎？Let us wait in the reading room, will you?我們在閱覽室等，好嗎？【針對練習(xí)】用反意疑問句補(bǔ)全句子(1)There is little doubt in your mind that he is innocent(無辜的)，_？(2)He hardly gets up late, _？(3)Everyone is h

22、ere, _？(4)Let us do it now, _？(5)Mike seldom has breakfast at home, _？No, but he did this morning.(6)I dont think Michael has finished the report, _？【答案】(1)is there(2)does he(3)arent they(4)will you(5)does he(6)has he2(P109)there will be no rhinos left in the world in 20 years.【翻譯】二十年后，世界上將沒有犀牛剩下了?！?/p>

23、句式解讀】本句中的left是leave的過去分詞，意為“剩下”。它修飾前面的名詞rhinos?！揪涫教嵘?1)過去分詞作定語分為前置和后置兩種情況：前置定語：單個的過去分詞作定語，通常放在被修飾詞之前，但有些單個的過去分詞習(xí)慣上放在所修飾詞語的后面，如left。后置定語：過去分詞短語作定語時，通常放在被修飾詞之后，它的作用相當(dāng)于一個定語從句。This is one of our required subjects. 這是我們的必修課之一。There is little time left. Lets hurry up.剩余時間不多了，我們快點吧。It is one of the funnie

24、st things found on the Internet so far this year.It is one of the funniest things have been found on the Internet so far this year.這是今年到目前為止在因特網(wǎng)上所發(fā)現(xiàn)的最有趣的事情之一。(2)過去分詞作定語常用來修飾名詞或代詞，其邏輯主語就是它所修飾的名詞或代詞。過去分詞表示被動、完成(不及物動詞的過去分詞只表示完成)。This is a used stamp. 這是一張用過的郵票。(表示被動和完成)They are cleaning the fallen leav

25、es in the yard. 他們正在打掃院子里的落葉。(只表示完成)【針對練習(xí)】單句語法填空(1)A survey _(make)at the end of last month suggests that 80% of the students in our school will study science in the future.(2)Jim has retired, but he still remembers the happy time _(spend)with his students.(3)The producer comes regularly to collect

26、cameras _(return)to our shop for quality problems.【答案】(1)made(2)spent(3)returned翻譯句子(4)我上周從圖書館借了一本馬克吐溫寫的書?！敬鸢浮縄 borrowed a book (which/that was) written by Mark Twain from the library last week.隨堂知能小練單詞拼寫1It is an fact that _(塑料的) bags are still widely used in our daily life.2The river flooded last

27、summer and the bridge was totally _(毀掉) in the floods.3As we know, iron, paper, glass, etc., can be all _(回收)4Many wild animals in this forest are now under _(威脅) because of air pollution.5It is not allowed to _(獵殺) wild animals in many countries of the world. 6Many wild animals have been _(滅絕的) for

28、 various reasons.7Mr.Brown told the students a very _(有教育意義的) story.8Please turn on the TV set and _(轉(zhuǎn)換成)over to CCTV 79If you have something _(緊急的) to tell me, please make a phone call to me.10Now if you act _(非法地) on the high speed train, you will be fined.【答案】1plastic2destroyed3recycled4threat5hunt6extinct7informative8switch9urgent10illegally單句語法填空1We must try our best to keep our environment under careful _(conserve)2Many people are afraid that humans are on the way to _(destroy)3Things are now getting _(incredible) troublesome.4