Unit13WearetryingtosavetheearthSectionA公開課教學課件

1、Were trying to save the earth!Unit 13Period2 SectionA3a-4cWere trying to save the earthSHARK鯊魚早在恐龍出現(xiàn)前三億年前就已經(jīng)存在地球上，至今已超過四億年，它們在近一億年來幾乎沒有改變。鯊魚是海洋中的龐然大物，所以號稱“海中霸王”。SHARK鯊魚早在恐龍出現(xiàn)前三億年前就已經(jīng)存在地球上，至今已shark fin 魚翅湯Mayby you like itshark fin 魚翅湯Mayby you likDo you know?Do you know?Unit-13-We-are-trying-to-save

2、-the-earth-Section-A-公開課教學課件它們最后在饑餓和傷痛中悲慘地死去它們最后在饑餓和傷痛中悲慘地死去 中國目前是世界第一大魚翅進口國，隨著中國民眾生活水平的提高，魚翅已不再是少數(shù)人特享，而魚翅被水銀(mercury )污染的程度高達百分之七十，而且食用魚翅正使全球鯊魚種群遭遇絕滅之災。漁民在捕撈上一條鯊魚后不論大小，都會在甲板上用電鋸活生生地把鯊魚的背鰭(dorsal fin )、兩個胸鰭(pectoral fin )和一部分尾鰭(tail fin)割掉，然后將全身血流不止的鯊魚扔回海中 . 中國目前是世界第一大魚翅進口國，隨著中國民眾生活水平的提真相！吃鯊魚肉、魚翅會對人

3、體有很大傷害！據(jù)中國海洋大學的鯊魚魚翅營養(yǎng)學報告和香港大學的危險的魚翅湯中相關數(shù)據(jù)顯示，從現(xiàn)代營養(yǎng)學的角度看，魚翅并不含有任何人體健康有益或高價值的營養(yǎng)，魚翅湯的美味主要來自它的配料，而并非魚翅本身。該調查報告還顯示出，魚翅這種高檔營養(yǎng)品被重金屬毒素水銀污染的程度很高，含有可被人體吸收的水銀比率已超出正常允許含量的幾十倍。因此，多吃鯊魚肉、魚翅都可能會對人體有很大傷害。真相！吃鯊魚肉、魚翅會對人體有很大傷害！據(jù)中國海洋大學的因為魚翅的價格甚高，近年吸引各地漁民爭相在海中捕殺鯊魚，引致海中生態(tài)出現(xiàn)不平衡，導致部分鯊魚瀕危。由此導致鯊魚總數(shù)大幅減少50年來下降了80%。據(jù)估計，每年全球有1百萬鯊魚

4、被捕殺，魚翅的年產(chǎn)值達到12億美金。消費者消費魚翅的心理動機主要是“為了顯示個人的品位或身份”、“高檔次的魚翅能給個人的事業(yè)或健康帶來幫助”。 因為魚翅的價格甚高，近年吸引各地漁民爭相在海中捕殺鯊魚，引致3a Discuss the questions with a partner.1. Have you ever seen a shark?2. What do you know about sharks?3a Discuss the questions wi 艾米護鯊俱樂部 2011 Amys Shark Protection Club 保護鯊魚 拒食魚翅 沒有買賣 就沒有殺害Save th

5、e sharks! 艾米護鯊俱樂部 2011保護鯊魚 拒食魚翅3b Read the passage. Complete the fact sheet below. Where sharks fin soup is popular Number of sharks caught and traded every year the numbers of some kinds of sharks have fallen in the last 20 to 30 years Two environmental groups which are against finning In southern

6、China. Around 70 million sharksOver 90 percentThey are WildAid and the WWF. 3b Read the passage. Comple3c Read the passage and fill in the blanks with the words in the box. So although if but whenMany people do not realize they are killing a whole Shark_ they enjoy a bowl of sharks fin soup.2. Shark

7、s are at the top of the food chain,_if their numbers drop, the oceans ecosystem will be in danger.3. Many think that sharks are too strong to be endangered,_theyre wrong.whensobut3c Read the passage and fil4a Fill in the blanks with the correct forms of the verbs in brackets.Interviewer:_you ever_(t

8、ake) part in an environmental project?Ken:Yes, I have. I_(help) with a Clean-Up Day last year. It was_(consider) the biggest clean-up project this city_ever _(have).Interviewer: How many people_(take) part? Havetakenhelpedconsideredhadhadtook4a Fill in the blanks with 4._there are no scientific stud

9、ies to support this, a lot of people believe that sharks fins are good for health. 5. Sharks may disappear one day_we do not do something to stop the sale of sharks fins.Althoughif4._there are no scientif4b Fill in the blanks with the appropriate modal verbs from the box.canwouldcouldhave toshouldmu

10、stmay/might When it comes to saving the earth, people_think that big things_be done. However, many forget that saving the earthbegins with small things. For example, you_save electricityby turning off the lights when you leave a room. You_also use4b Fill in the blanks with tKen:I_(think) more than 1

11、,000 people _(come) to help out. Interviewer: Thats fantastic! I guess everyone in this city is_(try) to improve the environment. Ken:Yes, everyone should_(play) a part in keeping the city clean. thinkcametryingplayKen:I_(think) more thanReview of Tenses Present ProgressivePresent Simple“used to” +

12、infinitive Present Perfect Past progressive Future simple Passive VoiceModel verbsReview of Tenses Present Progrpaper or reusable bags instead of plastic bags. In some stores, you now_ pay for plastic bags. I think this is a great idea. And instead of driving to school or work, you_ride your bike or

13、 walk. If its far, you_take the bus. All these small things_add up and become big things that_improve the environment. We cannot afford to wait any longer before taking action! paper or reusable bags insteadLily Lucy Lily Lucy What a fine day today! Look! What are they doing? What a fine day today!

14、一般在動詞原形后+inggoaskgoing asking以不發(fā)音的e結尾的,去e，+ingwritetakewritingtaking重讀閉音節(jié)以一個輔音字母結尾的，雙寫這一字母+inggetrunswimgettingrunningswimming動詞-ing形式的構成一般在動詞原形后+inggogoing以不發(fā)音的e結尾的,去1.現(xiàn)在進行時: Present Progressive概念: 表示現(xiàn)在正在發(fā)生的動作結構: be (is, am, are) + doing標志語： Look! 、 Listen! 、now1.現(xiàn)在進行時: Present Progressive概念 The tw

15、ins _(wash) the clothes now.2. Look! He _ (play) basketball over there.3. Listen! _ Sally _(sing)?are washingis playingIs singingExercise The twins _(wash) t2. How often do you ? (once a week, twice, never)2. How often do you ? 一般現(xiàn)在時: Present Simple概念: 表示習慣、經(jīng)常性的動作結構: do、 does標志語：usually、often、never、

16、 sometimes、once a week、 twice a month、every year一般現(xiàn)在時: Present Simple They _(wash) the clothes every day.2. Sometimes he _ (play) basketball over there.3. How often _ Sally _(sing)?washesplaysExercise doessing They _(wash) the clotheI have a friend. His / Her name is.He / She plays. I have a friend.

17、 His / Her namLast Sunday morning, my friend. In the afternoon, he/she. And at night, he/shemorningwentafternoonvisitednightdidLast Sunday morning, my friend- What did you do last Sunday morning? - I went to.morningwentafternoonvisitednight3. 一般過去時- What did you do last Sunday動詞-ed形式的構成：在動詞后加-edwant

18、answerwantedanswered以字母e 結尾的動詞，只+dmovediemoveddied“ 輔音字母+y ” ，變y 為i, 再+edcarrycrycarriedcried重讀閉音節(jié)以一個輔音字母結尾的，雙寫+edstopplanstoppedplanned動詞-ed形式的構成：在動詞后加-edwantwanted以一般過去時: Past Simple概念: 表示過去發(fā)生的動作結構: did標志語：yesterday、. ago、 in 1992、 last week/month一般過去時: Past Simple現(xiàn)在完成時: Present Perfect概念: 表示已經(jīng)發(fā)生的

19、動作結構: has done、 have done標志語：already、 yet、ever、 never、since、for現(xiàn)在完成時: Present Perfect- Have you packed yet? - Yes, I have packed . No, I havent pack the towelsYes pack the cameraNo water the plantsYes 4. 現(xiàn)在完成時- Have you packed yet? pacgetgotgottengowentgoneeatateeatenarewerebeendodiddonecutcutcutsay

20、saidsaid不規(guī)則過去分詞getgotgottengowentgoneeatateea5. 過去進行時: Past Progressive 概念: 表示過去正在發(fā)生的動作 結構: be (was，were) + doing 標志語：at 8:00 yesterday 、 when、 while、5. 過去進行時: Past Progressivetaketooktakenswimswamswumdrinkdrankdrunkhavehadhadcomecamecomeputputputseesawseen不規(guī)則過去分詞taketooktakenswimswamswumdrink6. 一般將

21、來時: Future Simple概念: 表示將要發(fā)生的動作結構: will do、 shall do、 be (is/am/are) going to do標志語：tomorrow、in.、next6. 一般將來時: Future Simple1.can, could(1)表示能力，“能，會”Can you play basketball?(2)表示懷疑、猜測，常用于否定句和疑問句中He cant be in classroom.(3)表示請求或允許，口語，“可以”相當may You can go now.1.can, could概念:表示主語是動作的承受者,即行為動作的 對象的一種語態(tài)。結

22、構: be + 動詞過去分詞e.g. In 1972, it was discovered that they were endangered Our classroom is cleaned every day7. Passive voice概念:表示主語是動作的承受者,即行為動作的7. Passiv用法(4)could 是can的過去式，可以表示過去的能力I could swim when I was seven years old.(5)can開頭的一般疑問句 以can和cant回答could開頭的一般疑問句 以could和couldnt回答用法(4)could 是can的過去式，可以表

23、示過去的能力(4)否定句中，mustnt表示禁止，“不允許”Must開頭的疑問句，肯定回答用must，否定回答用neednt（=dont have to） “不需要，不必”(4)否定句中，mustnt表示禁止，“不允許”6.shall (should),will (would)(1)shall用于第一人稱征求意見、詢問。(2)should常用來表示義務、責任We should obey traffic laws.(3)will 用于第二人稱表示詢問，請求，可也以表達現(xiàn)在的“意愿”Will you pass me the book ？We will do anything for you.(4)

24、would用于表示過去的意愿或委婉提問Would you tell me the way to the station?6.shall (should),will (would)(4.need（1）need + to do ：need為實義動詞，用助動詞提問或否定（2）need + doing：表被動意義（3）need + do ：need為情態(tài)動詞，用need提問或回答，肯定回答用need，否定回答用neednt5.had better“had better+動詞原形”：最好做某事，否定形式用：had better not do 4.need5.had better2.can 和may 表示

25、可能性時的區(qū)別(1)肯定句中用may 表示可能You had better ask the policeman. He may know.(2)否定句中，語氣肯定，“不可能”用cant語氣不肯定，“可能不”用may not2.can 和may 表示可能性時的區(qū)別區(qū)分1.can 和 be able to表示能力時用法相同Can：一般現(xiàn)在時、一般過去時（could）Be able to：現(xiàn)在時、過去時、將來時Jim couldnt speak Chinese last year , but now he can.We will be able to come back next week.區(qū)分1.

26、can 和 be able to4.must, have (has) to都是“必須”的意思，?？苫Q使用，但,have (has) to 是用于強調客觀需要，“必須，不得不”Must用于強調主觀看法，“必須，應該”4.must, have (has) to3.would, should, could, might等過去式有時不表示過去，而是表示更委婉的語氣3.would, should, could, might等6.cant 和 mustnt否定推測：cant “不可能”mustnt “禁止，不允許”，不能用于推測must肯定句中表推測，“一定”6.cant 和 mustnt5.maybe

27、 和 may be may 情態(tài)動詞，后面+動詞原形be ，用在句中 maybe 副詞 ，“大概，也許”相當于perhaps， 用于句首5.maybe 和 may beI usually _ up at 6:00,but yesterday I _up at 7:00, and tomorrow I _ (get) up at 6:30.2. Listen! Someone _(knock) at the door.3. I _(be) in Beijing for two years.4. How often _Andy_ (surf) the Internet?getgotwill get

28、is knockinghave beendoesExercise surfI usually _ up at 6:00,bu5. He fell asleep while he _ (read) a book.6. I_never_（hear) of that man before.7. My brother often _(go) for walks last summer.8. _the story _(happen) in London in 1940?was readinghavewentheardDid happen5. He fell asleep while he _The tw

29、ins _ (wash) the clothes for an hour.He _ (play) basketball since three years ago.How long _ Sally _(sing) yet?have washedhas playedExercise hassungThe twins _ (wash) 結束語Nothing is too difficult if you put your heart into it. 世上無難事，只怕有心人。 結束語Nothing is too difficult if9. What _he _ (do) when his mot

30、her opened the door? 10. If it _(not rain) tomorrow, they _(go) fishing.11. _ Kates sisters _(play) the piano every Sunday?12. They _(not call) you the day after tomorrow.14. Tom _(work) there since two years ago. was doesnt rain will go Do wont calldoingplay has worked9. What _he _ (do) wsharkessha

31、rkesWere trying to save the earth!義務教育教科書（人教）九年級英語下冊Unit 13Period2 SectionA3a-4cWere trying to save the earthSHARK鯊魚早在恐龍出現(xiàn)前三億年前就已經(jīng)存在地球上，至今已超過四億年，它們在近一億年來幾乎沒有改變。鯊魚是海洋中的龐然大物，所以號稱“海中霸王”。SHARK鯊魚早在恐龍出現(xiàn)前三億年前就已經(jīng)存在地球上，至今已shark fin 魚翅湯Mayby you like itshark fin 魚翅湯Mayby you likDo you know?Do you know?Unit-13

32、-We-are-trying-to-save-the-earth-Section-A-公開課教學課件它們最后在饑餓和傷痛中悲慘地死去它們最后在饑餓和傷痛中悲慘地死去 中國目前是世界第一大魚翅進口國，隨著中國民眾生活水平的提高，魚翅已不再是少數(shù)人特享，而魚翅被水銀(mercury )污染的程度高達百分之七十，而且食用魚翅正使全球鯊魚種群遭遇絕滅之災。漁民在捕撈上一條鯊魚后不論大小，都會在甲板上用電鋸活生生地把鯊魚的背鰭(dorsal fin )、兩個胸鰭(pectoral fin )和一部分尾鰭(tail fin)割掉，然后將全身血流不止的鯊魚扔回海中 . 中國目前是世界第一大魚翅進口國，隨著中

33、國民眾生活水平的提因為魚翅的價格甚高，近年吸引各地漁民爭相在海中捕殺鯊魚，引致海中生態(tài)出現(xiàn)不平衡，導致部分鯊魚瀕危。由此導致鯊魚總數(shù)大幅減少50年來下降了80%。據(jù)估計，每年全球有1百萬鯊魚被捕殺，魚翅的年產(chǎn)值達到12億美金。消費者消費魚翅的心理動機主要是“為了顯示個人的品位或身份”、“高檔次的魚翅能給個人的事業(yè)或健康帶來幫助”。 因為魚翅的價格甚高，近年吸引各地漁民爭相在海中捕殺鯊魚，引致真相！吃鯊魚肉、魚翅會對人體有很大傷害！據(jù)中國海洋大學的鯊魚魚翅營養(yǎng)學報告和香港大學的危險的魚翅湯中相關數(shù)據(jù)顯示，從現(xiàn)代營養(yǎng)學的角度看，魚翅并不含有任何人體健康有益或高價值的營養(yǎng)，魚翅湯的美味主要來自它的配

34、料，而并非魚翅本身。該調查報告還顯示出，魚翅這種高檔營養(yǎng)品被重金屬毒素水銀污染的程度很高，含有可被人體吸收的水銀比率已超出正常允許含量的幾十倍。因此，多吃鯊魚肉、魚翅都可能會對人體有很大傷害。真相！吃鯊魚肉、魚翅會對人體有很大傷害！據(jù)中國海洋大學的 艾米護鯊俱樂部 2011 Amys Shark Protection Club 保護鯊魚 拒食魚翅 沒有買賣 就沒有殺害Save the sharks! 艾米護鯊俱樂部 2011保護鯊魚 拒食魚翅3a Discuss the questions with a partner.1. Have you ever seen a shark?2. What

35、 do you know about sharks?3a Discuss the questions wi3b Read the passage. Complete the fact sheet below. Where sharks fin soup is popular Number of sharks caught and traded every year the numbers of some kinds of sharks have fallen in the last 20 to 30 years Two environmental groups which are agains

36、t finning In southern China. Around 70 million sharksOver 90 percentThey are WildAid and the WWF. 3b Read the passage. Comple4._there are no scientific studies to support this, a lot of people believe that sharks fins are good for health. 5. Sharks may disappear one day_we do not do something to sto

37、p the sale of sharks fins.Althoughif4._there are no scientif3c Read the passage and fill in the blanks with the words in the box. So although if but whenMany people do not realize they are killing a whole Shark_ they enjoy a bowl of sharks fin soup.2. Sharks are at the top of the food chain,_if thei

38、r numbers drop, the oceans ecosystem will be in danger.3. Many think that sharks are too strong to be endangered,_theyre wrong.whensobut3c Read the passage and filKen:I_(think) more than 1,000 people _(come) to help out. Interviewer: Thats fantastic! I guess everyone in this city is_(try) to improve

39、 the environment. Ken:Yes, everyone should_(play) a part in keeping the city clean. thinkcametryingplayKen:I_(think) more than4b Fill in the blanks with the appropriate modal verbs from the box.canwouldcouldhave toshouldmustmay/might When it comes to saving the earth, people_think that big things_be

40、 done. However, many forget that saving the earthbegins with small things. For example, you_save electricityby turning off the lights when you leave a room. You_also use4b Fill in the blanks with t4a Fill in the blanks with the correct forms of the verbs in brackets.Interviewer:_you ever_(take) part

41、 in an environmental project?Ken:Yes, I have. I_(help) with a Clean-Up Day last year. It was_(consider) the biggest clean-up project this city_ever _(have).Interviewer: How many people_(take) part? Havetakenhelpedconsideredhadhadtook4a Fill in the blanks with Review of Tenses Present ProgressivePres

42、ent Simple“used to” + infinitive Present Perfect Past progressive Future simple Passive VoiceModel verbsReview of Tenses Present Progrpaper or reusable bags instead of plastic bags. In some stores, you now_ pay for plastic bags. I think this is a great idea. And instead of driving to school or work,

43、 you_ride your bike or walk. If its far, you_take the bus. All these small things_add up and become big things that_improve the environment. We cannot afford to wait any longer before taking action! paper or reusable bags insteadLily Lucy Lily Lucy What a fine day today! Look! What are they doing? W

44、hat a fine day today! 一般在動詞原形后+inggoaskgoing asking以不發(fā)音的e結尾的,去e，+ingwritetakewritingtaking重讀閉音節(jié)以一個輔音字母結尾的，雙寫這一字母+inggetrunswimgettingrunningswimming動詞-ing形式的構成一般在動詞原形后+inggogoing以不發(fā)音的e結尾的,去1.現(xiàn)在進行時: Present Progressive概念: 表示現(xiàn)在正在發(fā)生的動作結構: be (is, am, are) + doing標志語： Look! 、 Listen! 、now1.現(xiàn)在進行時: Presen

45、t Progressive概念2. How often do you ? (once a week, twice, never)2. How often do you ? The twins _(wash) the clothes now.2. Look! He _ (play) basketball over there.3. Listen! _ Sally _(sing)?are washingis playingIs singingExercise The twins _(wash) t一般現(xiàn)在時: Present Simple概念: 表示習慣、經(jīng)常性的動作結構: do、 does標志語

46、：usually、often、never、 sometimes、once a week、 twice a month、every year一般現(xiàn)在時: Present SimpleI have a friend. His / Her name is.He / She plays. I have a friend. His / Her nam- What did you do last Sunday morning? - I went to.morningwentafternoonvisitednight3. 一般過去時- What did you do last Sunday They _(w

47、ash) the clothes every day.2. Sometimes he _ (play) basketball over there.3. How often _ Sally _(sing)?washesplaysExercise doessing They _(wash) the clothe一般過去時: Past Simple概念: 表示過去發(fā)生的動作結構: did標志語：yesterday、. ago、 in 1992、 last week/month一般過去時: Past SimpleLast Sunday morning, my friend. In the after

48、noon, he/she. And at night, he/shemorningwentafternoonvisitednightdidLast Sunday morning, my friend- Have you packed yet? - Yes, I have packed . No, I havent pack the towelsYes pack the cameraNo water the plantsYes 4. 現(xiàn)在完成時- Have you packed yet? pac動詞-ed形式的構成：在動詞后加-edwantanswerwantedanswered以字母e 結尾的

49、動詞，只+dmovediemoveddied“ 輔音字母+y ” ，變y 為i, 再+edcarrycrycarriedcried重讀閉音節(jié)以一個輔音字母結尾的，雙寫+edstopplanstoppedplanned動詞-ed形式的構成：在動詞后加-edwantwanted以getgotgottengowentgoneeatateeatenarewerebeendodiddonecutcutcutsaysaidsaid不規(guī)則過去分詞getgotgottengowentgoneeatateeataketooktakenswimswamswumdrinkdrankdrunkhavehadhadco

50、mecamecomeputputputseesawseen不規(guī)則過去分詞taketooktakenswimswamswumdrink現(xiàn)在完成時: Present Perfect概念: 表示已經(jīng)發(fā)生的動作結構: has done、 have done標志語：already、 yet、ever、 never、since、for現(xiàn)在完成時: Present Perfect6. 一般將來時: Future Simple概念: 表示將要發(fā)生的動作結構: will do、 shall do、 be (is/am/are) going to do標志語：tomorrow、in.、next6. 一般將來時:

51、Future Simple5. 過去進行時: Past Progressive 概念: 表示過去正在發(fā)生的動作 結構: be (was，were) + doing 標志語：at 8:00 yesterday 、 when、 while、5. 過去進行時: Past Progressive1.can, could(1)表示能力，“能，會”Can you play basketball?(2)表示懷疑、猜測，常用于否定句和疑問句中He cant be in classroom.(3)表示請求或允許，口語，“可以”相當may You can go now.1.can, could概念:表示主語是動作

52、的承受者,即行為動作的 對象的一種語態(tài)。結構: be + 動詞過去分詞e.g. In 1972, it was discovered that they were endangered Our classroom is cleaned every day7. Passive voice概念:表示主語是動作的承受者,即行為動作的7. Passiv(4)否定句中，mustnt表示禁止，“不允許”Must開頭的疑問句，肯定回答用must，否定回答用neednt（=dont have to） “不需要，不必”(4)否定句中，mustnt表示禁止，“不允許”用法(4)could 是can的過去式，可以表

53、示過去的能力I could swim when I was seven years old.(5)can開頭的一般疑問句 以can和cant回答could開頭的一般疑問句 以could和couldnt回答用法(4)could 是can的過去式，可以表示過去的能力6.shall (should),will (would)(1)shall用于第一人稱征求意見、詢問。(2)should常用來表示義務、責任We should obey traffic laws.(3)will 用于第二人稱表示詢問，請求，可也以表達現(xiàn)在的“意愿”Will you pass me the book ？We will do anything for you.(4)would用于表示過去的意愿或委婉提問Would you tell me the way to the station?6.shall (should),will (would)(4.need（1）need + to do ：need為實義動詞，用助動詞提問或否定（2）need + doing：表被動意義（3）need + do ：need為情態(tài)動詞，用need提問或回答，肯定回答用need，