2018届九年级英语全册Unit13We’retryingtosavetheearth第2课时SectionA3a_3c学案.docx

Were trying to save the earth!第二课时Section A(3a3b)【学习目标】1学习并掌握新词汇：shark，fin，method，cruel，cut off，harmful，chain，ecosystem，low，industry，law，environment，environmental，scientific2学会并正确使用以下常用表达：hear of，cut off，throwinto，no longer，not onlybut also，be harmful to，at the top of the food chain，the sale of【学习重点】通过学习3a部分的文章，了解珍稀动物的生存现状，树立保护濒危动植物的意识。【学习难点】给出一些阅读技能，教会学生怎么使用这些阅读技能。This period we will learn a small passage about saving sharks，first ask a few students to answer my questions about the passage.Task 1Learn the passage by themselves on P99: students read the passage silently and rapidly，know the general idea and mark the new words，phrases and sentences.【学法指导】percent 做名词，“百分之” 单复数相同。the percent of 名词(un/cn)，当其做主语时，谓语动词要和of后的名词保持一致。southsouthern northnorthernwestwestern easteasternhear of 听说hear from 收到某人来信be popular in 在范围内受欢迎be popular with受某人欢迎情景导入生成问题The teacher may want to ask ss to do some additional research to find out more about sharks before this lesson.This will enable the ss to have a better understanding and greater knowledge about sharks.And then ask students：Do you like animals? How do you help protect the endangered animals?自学互研生成能力Task 1Lets read the new words and phrases.1I can read.(我会读)预习下列单词和短语，争取自己能正确拼读。拼读成功后再在课文中把单词和短语标记出来。shark，fin，method，cruel，cut off，harmful，chain，ecosystem，low，industry，law，environment，environmental，scientific2I can write.(我会写)翻译下列词语：(1)鱼翅汤shark_fin_soup(2)割掉鱼鳍cut_off_the_fins(3)对环境有害be_harmful_to_the_environment(4)处于食物链的顶端at_the_top_of_the_food_chain(5)在最近的20到30年间in_the_last_20_to_30_years(6)下降了90%多fall_by_over_90_percent(7)健全法律develop_laws(8)鱼鳍买卖the_sale_of_shark_fins_3I can summarize.(我会总结)not onlybut also用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅而且”，其中的also有时可以省略。若连接两个成分作主语，其谓语通常与靠近的主语保持一致。如：Not only you but also he has to leave.不只是你，他也得离开。 not only放在句首，后接句子时要用倒装结构。 如：Not only had the poor man been fined，but also he had been sent to prison.这个可怜的人不仅被罚款，而且还被送进了监狱。 Task 2Lets read 3a and get the main idea of the passage.1Fast reading.(快速阅读)(1)请写下3a 表格中的答案Where shark fin soup is popular In southern China Number of sharks caught and traded every yearAround 70 million sharks How much the number of some kinds of sharks have fallen in the last 20 to 30 yearsOver 90 percentTwo environmental groups against “finning”They are Wild Aid and the WWF(2)请尝试翻译一下课文中的句子。Environment protection groups around the world，such as WildAid and the WWF，are teaching the public about “finning”世界各地的环境保护组织，如野生救援协会和世界自然基金会，都在教育公众有关“猎翅”的行为。This method is not only cruel，but also harmful to the environment.这不仅仅很残酷而且对环境有害。2Intensive reading.(精读)细读文章，完成教材3b的任务，要求学生再次阅读课文用3b的方框中所给单词完成句子。(1)when；(2)so；(3)but；(4)Although；(5)ifTask 21Fast reading.(1)Students read the passage silently and rapidly，familiar to the general idea，finish the tasks in 3a.(2)Students try translating the more difficult sentences in the passage.2Intensive reading.Students read the passage carefully and fill in the blanks with the words in the box in 3b.3I can retell.Students sort out the text and try retelling the passage according to the table in English.【备注】3I can retell.(我会复述)你能写下文章的要点，并根据他们进行复述吗？大胆挑战下自我吧！请在黑板上书写这些要点。Save the sharks Shark fin soup is popular in southern ChinaMany have heard of shark fin soup.But do you.each time you enjoyNumber of sharks caught and traded every yearWhen people catch；Without a fin，a sharkhave fallen by over 90%Two environmental groups against “finning”Environmental protection groups around the world such as，so why eat交流展示生成新知Preshow：Show in groups.(Time：six minutes)Task 1：1.First，the students read the words and phrases in groups.Then，read together and sum up the usage of the words in groups.2Ask students to turn to P99 and read 3a quickly.And then spend ten minutes translating the phrases in “I can write” in Task 1 in groups.3Read the passage carefully again and then try to summarize the usage of“not onlybut also” with the other group members.Task 2：First，the students discuss the main idea of the article，find out the key sentence of each paragraph.And mark them in the passage.Mark the sentences they dont understand in it.Next，finish the tasks in 3b.Improve by showing：Class show.(Time：sixteen minutes) Task 1: I can read.(1)Read together，pay attention to the pronunciation of “ecosystem”and “environmental”；(2)Ask several group members to sum up and explain the usage of “not onlybut also”and discuss in class.Finally the teacher correct it.2I can write.(1)Students translate the phrases into English by answering quickly; (2)Read together；(3)Spot test：Consolidate the usage of phrases by making sentences.3I can summarize. Sum up the usage of“not onlybut also”Task 2: 1.Fast reading.(1) Students read the article with the questions in 3a; (2)Students answer the four questions by answering quickly and know where the answers are in the text.2Intensive reading.Students check the answers in Task 2 and 3b，then check the answers.3I can retell.Students write the key points on the blackboard and try to retell the text in English.当堂演练达成目标一、用括号内所给单词的适当形式填空。1Hainan is in the south(south) part of China.2We all support his scientific(science) research.3This is an endangered(danger)animal.We should try to save it.4Smoking is harmful(harm) to your health.You must give it up.5Tom is the_most_strongest(strong) in our school.二、根据汉语意思完成句子，每空一词。1保护海洋生态系统食物链的平衡很重要。Its very important to keep the balance of the food chain in the ocean ecosystem.2目前很多动物的数量在下降。At present the number of many animals is dropping3他的中指