Unit 13We’re trying to save the earth! 第2课时(A 3a-4c)课件人教新目标版九年级英语全册.pptx

1、R九年级全一册九年级全一册Section A 3a-4cUnit 13 Were trying to save the earth!New words残酷的；残忍的残酷的；残忍的(adj.)有害的有害的(adj.)工业；行业工业；行业(n.)法律；法规法律；法规(n.)科学上的；科学的科学上的；科学的(adj.)现在的现在的(adj.)现在；礼物现在；礼物(n.)承担得起；买得起承担得起；买得起(v.)cruelscientificaffordharmfullawindustrypresent鲨鱼鲨鱼(n.)(鱼鱼)鳍鳍(n.)链子；链条链子；链条(n.)生态系统生态系统(n.)可重复使用的可

2、重复使用的(adj.)运输业；交通运输运输业；交通运输(n.)sharkreusabletransportationfinecosystemchain/rk/fn/ten/iksstm/rijuzbl/trnsprten/对对有害有害在在顶部或顶端顶部或顶端食物链食物链 参加参加 关掉关掉 付费；付出代价付费；付出代价 采取行动采取行动be harmful toat the top ofthe food chaintake part inturn offpay fortake actionNew phrasesLead-insharksWatch a video about sharks.点击

3、画面点击画面 播放视频播放视频Save the sharks!Skipping reading Talk about shark fin soup.Sharks are endangered now.Appeal to people against eating shark fins.Para.3 Para.1 Para.2Read the title,the first and the last sentence of each paragraph and match the main ideas.3aRead the passage about sharks and complete th

4、e fact sheet below.Number of sharks caught and traded every yearHow governments can helpTwo environmental groups against“finning”Around 70 millionTo develop laws to stop the sale of shark finsWildAid and the WWFSharks are endangered,read the passage and judge the sentences.Read the first paragraph1.

5、Shark fin soup is famous all around the world.2.We have to kill a whole shark to get a bowl of shark fin soup.Read the second paragraph.1.People cut off sharks fins and throw the sharks back into the ocean.2.Sharks are in the bottom of the food chain in the oceans ecosystem.n.生态系统生态系统食物链食物链Read the

6、third paragraph.1.WildAid and the WWF are environmental protection groups in China.2.Shark fins are good for health.Many have heard of shark fin soup.But do you realize that youre killing a whole shark each time you enjoy a bowl of shark fin soup?听说听说Save the sharks!When people catch sharks,they cut

7、 off their fins and throw the sharks back into the ocean.This is not only cruel,but also harmful to the environment.Without a fin,a shark can no longer swim and slowly dies.Sharks are at the top of the food chain in the oceans ecosystem.If their numbers drop too low,it will bring danger to all ocean

8、 life.不但不但而且而且在在顶部或顶端顶部或顶端切下来；剪下来切下来；剪下来不再不再be harmful to对对有害有害Many believe that sharks can never be endangered because they are the strongest in their food chain.But in fact,around 70 million sharks are caught and traded in this industry every year.The numbers of some kinds of sharks have fallen by

9、 over 90 percent in the last 20 to 30 years.濒危的濒危的Environmental protection groups around the world,such as WildAid and the WWF,are teaching the public about“finning”.They have even asked governments to develop laws to stop the sale of shark fins.So far,no scientific studies have shown that shark fin

10、s are good for health,so why eat them?Help save the sharks!制定法律制定法律people enjoy_ fishermen _,_,then _decreased quicklya bowl of shark fin soupcatch sharks cut off their finsthrow them into the oceanthe numbers of some kinds of sharks Read the first two paragraphs and fill in the blanks.Retell the pa

11、ssage.A whole shark has been killed each time you enjoy a bowl of shark fin soup.When people catch sharks,they _ their fins and throw the sharks back into the ocean.cut offWithout a fin,a shark can _ swim and slowly dies.If sharks numbers drop too low,it will _ all ocean life._ some kinds of sharks

12、have fallen _ over 90 percent in the last 20 to 30 years.no longerbring danger toThe numbers ofbyLanguage points1.This is not only cruel,but also harmful to the environment.not onlybut also是一个连词词组，意是一个连词词组，意为为“不但不但而且而且”用于肯定句中，常用用于肯定句中，常用来连接两个并列的句子成分。来连接两个并列的句子成分。例句：他不仅是我的老师，而且是我的好朋友。例句：他不仅是我的老师，而且是我

13、的好朋友。Hes not only my teacher,but(also)my good friend.2.Sharks are at the top of the food chain in the oceans ecosystem.例句：把你的姓名写在页面的顶端。例句：把你的姓名写在页面的顶端。Write your name at the top of the page.at the top of 意为意为“在在顶部或顶端顶部或顶端”反义短语：反义短语：at the bottom of 在在的底部的底部Read the passage again and fill in the blan

14、ks with the words in the box.3bso although if but when1.Many people do not realize they are killing a whole shark _ they enjoy a bowl of shark fin soup.2.Sharks are at the top of the food chain,_ if their numbers drop,the oceans ecosystem will be in danger.whensoso although if but when3.Many think t

15、hat sharks are too strong to be endangered,_ they are wrong.4._ there are no scientific studies to support this,a lot of people believe that shark fins are good for health.5.Sharks may disappear one day _ we do not do something to stop the sale of shark fins.butAlthoughifGrammar FocusWere trying to

16、save the earth.Present progressiveThe river used to be so clean.used toThe air is badly polluted.Passive voiceNo scientific studies have shown that shark fins are good for health.Present perfectWe should help save the sharks.Modal verbs时态时态定义定义现在进行时现在进行时现在完成时现在完成时被动语态被动语态表示表示现在或现阶段正在发生现在或现阶段正在发生或进行的

17、或进行的动作动作表示过去发生的动作对现在表示过去发生的动作对现在产生的产生的影响或结果影响或结果主语是谓语动作的承受者主语是谓语动作的承受者时态时态构成构成现在进行时现在进行时现在完成时现在完成时被动语态被动语态am/is/are+动词动词-ing形式形式have/has+动词过去分词动词过去分词be+动词过去分词动词过去分词时态时态常见标志词常见标志词现在进行时现在进行时现在完成时现在完成时now,at the moment(此刻此刻),look,listenalready,just或或yetFill in the blanks.1.听！一些女孩正在教室里唱歌。听！一些女孩正在教室里唱歌。L

18、isten.Some girls _ in the classroom.2.他们已经打扫了教室。他们已经打扫了教室。They _ already _ the classroom.are singing havecleaned3.这儿的人不说英语。这儿的人不说英语。English _ _ by people here.4.我曾去过那个国家。我曾去过那个国家。I _ ever _ to that country.isntspokenhavebeen情态动词具有一定的意义，但不能单独作谓情态动词具有一定的意义，但不能单独作谓语，其后需语，其后需接动词原形接动词原形一起构成句子的谓语。一起构成句子的谓

19、语。(除除have to以外以外)没有人称和数的变化没有人称和数的变化情态动词情态动词常见的情态动词有：常见的情态动词有：can,may,must,need,have to,could,should,ought to 情态动词的常见用法情态动词的常见用法1.We can do it by ourselves.2.It must be Toms.Look at his name on the cover.3.May I see your ID card,sir?4.Should we finish our homework before noon?表能力表能力表推测表推测表请求、许可表请求、许可

20、表应该表应该4aFill in the blanks with the correct forms of the verbs in brackets.Joe:_ you ever _(take)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).Joe:How many people _(take)part?Havetaken he

21、lpedconsideredhadhad tookKen:I _(think)more than 1,000 people _ (come)to help out.Joe:Thats fantastic!I guess everyone in this city is _(try)to improve the environment.Ken:Yes,we cant afford to _(wait)any longer to take action!thinkcametryingwaitLanguage pointstake part in意为意为“参加参加”。例句：你参加过任何活动吗？例句：

22、你参加过任何活动吗？Did you take part in any activity?【辨析辨析】take part in,join与与 join intake part injoinjoin in指参加指参加某项活动（比赛）某项活动（比赛）并在活动并在活动中起一定的作用。中起一定的作用。指参加指参加某党派、团体或参军某党派、团体或参军等，并等，并且成为其中的一员。且成为其中的一员。指参加指参加某项活动某项活动，但多指正在进行，但多指正在进行的活动。的活动。1.Did you _ the sports meeting yesterday?2.He _ the army last year.3

23、.I hope you can _ the discussion.take part injoinedjoin inFill in the blanks.4bcanwouldcouldhave toshouldmustmay/mightPeople _ think that big things _ be done to save the earth.Many forget that saving the earth begins with small things.For example,you _ save electricity by turning off the lights whe

24、n you leave a room.You _ also use reusable bags instead of plastic bags.may/mightmust/have tocan/shouldcan/shouldFill in the blanks with the appropriate modal verbs from the box.I think its a great idea that you now _ pay for plastic bags in some stores.And instead of driving to school or work,you _

25、 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.Lets take action now!have tocancancancan/shouldMake a list of things that people can do to help the environment and discuss your list with your partner.4cI think

26、 that everyone should use public transportation.I disagree.Its difficult for parents with young children to use public transportationWays people can use to help the environment.recycle books and paperbring a bag to go shoppingthrow rubbish into the bin Stop killing wild animals and protect them.课堂小结

27、课堂小结 Were trying to save the earth.The river used to be so clean.The air is badly polluted.No scientific studies have shown that shark fins are good for health.We should help save the sharks.1.如果它们（鲨鱼）的数目降至过低，会给所有如果它们（鲨鱼）的数目降至过低，会给所有 海洋生物带来危险。海洋生物带来危险。If their numbers drop too low,it will bring dang

28、er to all ocean life.2.但事实上，在这个行业，每年大约有七千万条但事实上，在这个行业，每年大约有七千万条 鲨鱼被捕捉和交易。鲨鱼被捕捉和交易。But in fact,around 70 million sharks are caught and traded in this industry every year.3.在过去的二三十年里，一些种类的鲨鱼的数量在过去的二三十年里，一些种类的鲨鱼的数量 下降了百分之九十以上。下降了百分之九十以上。The numbers of some kinds of sharks have fallen by over 90 percent

29、 in the last 20 to 30 years.Exercise一、用所给词的适当形式填空一、用所给词的适当形式填空。1.The old man used _(be)a teacher.2.We should _(clean)the room every day.3.Look!Tom _(sleep)in his room.4.Lots of trees _(plant)on the hill every year.5.He _(live)here for 20 years.to be clean is sleeping are planted has lived1.He promis

30、ed to pick me up at the school gate.However,he _ yet.A.didnt arrive B.doesnt arrive C.isnt arriving D.hasnt arrived2.Ba Jin,one of the greatest writers in China,_ as“Peoples Writer”.A.is regarded B.has regarded C.is regarding D.regards二、单项选择。二、单项选择。3.At present,one of the best ways to study is working in groups.More chances _ to students to learn from each other.A.offer B.are offered C.have offered D.are offering Homework1.Read the article and review key words,sentences and language points.2.Review the grammar focus we have learned in this period.3.Do the exercises.