Unit 13　We're trying to save the earth!.doc

‎ Unit 13　We're trying to save the earth!‎ Section A (1a－2d) ‎ ‎1．重点单词：litter，bottom，fisherman，coal，ugly，advantage，cost，wooden，plastic，takeaway，bin ‎2．重点短语：the bottom of，play a part in，make a difference，cut down，lead to ‎3．重点句式：‎ We're trying to save the earth.‎ Even the bottom of the river was full of rubbish.‎ Everyone in this town should play a part in cleaning it up.‎ I used to be able to see stars in the sky.‎ So together，our actions can make a difference and lead to a better future.‎ ‎1．重点短语和句型 ‎2．used to的用法 ‎3．一般现在时和现在进行时的用法 ‎ ‎1．重点短语和句型 ‎2．used to的用法 ‎3．一般现在时态和现在进行时态的用法 一、预习课本P97－98新单词并背诵，完成下面的汉译英。‎ ‎1．乱扔；垃圾____________　2.底部____________‎ ‎3．渔民____________ 4.煤块____________‎ ‎5．丑陋的____________ 6.优点____________‎ ‎7．花费____________ 8.木制的________________________________________________________________________‎ ‎9．塑料的；塑料____________‎ ‎10．外卖食物____________‎ ‎11．垃圾箱____________‎ 二、认真预习1a－2d找出下列短语和句型。‎ ‎1．……的底部________________________________________________________________________‎ ‎2．参与________________________________________________________________________‎ ‎3．起作用________________________________________________________________________‎ ‎4．减少；砍倒________________________________________________________________________‎ ‎5．导致________________________________________________________________________‎ ‎6．我们正在努力拯救地球。‎ ‎________________________________________________________________________‎ ‎7．甚至河底都充满了垃圾。‎ ‎________________________________________________________________________‎ ‎8．镇上的每一个人都应该参与到清扫河道的活动中来。‎ ‎________________________________________________________________________‎ ‎9．我过去能够在空中看到星星。‎ ‎________________________________________________________________________‎ ‎10．我们齐心协力就能带来变化，创造更加美好的未来。‎ ‎________________________________________________________________________‎ ‎ ‎ Step 1　情景导入 Teacher：There is more and more pollution in the world now，such as noise pollution，air pollution，water pollution and so on.Is there any pollution in your hometown？Please discuss with your partner.‎ 环节说明：由现在的人们面临的各种污染入手，让学生谈论自己身边的环境污染问题，既锻炼了学生的口语表达能力，又为本节课的学习做好铺垫。‎ Step 2　完成教材1a－1c的任务 ‎1．小组内齐读1a中的单词或短语，然后两人一组互相提问单词。(3分钟)‎ ‎2．根据要求将1a中的单词按要求分类，完成后小组内互相交流答案。(3分钟)‎ ‎3．阅读1b的问题和句子，为听力做好准备。(2分钟)‎ ‎4．听录音，根据听力内容将1b句子补充完整，完成后集体核对答案。(3分钟)‎ ‎5．再听一遍录音，并跟读对话。(2分钟)‎ ‎6．结对练习1c中的对话，并请一些学生表演出他们的对话。(3分钟)‎ ‎7．模仿1c中的对话，根据1b中的听力信息，与同伴编练新对话，并邀请几组学生表演对话。(5分钟)‎ 参考案例 A：The river was dirty.Even the bottom of the river was full of rubbish.‎ B：But it used to be so clean.‎ A：Yes，but people are throwing litter into the river.‎ B：Everyone in this town should play a part in cleaning it up.‎ ‎8．小结训练。(3分钟)‎ ‎(B)1.Don't pour water into the bottle，because it has been ________ water.‎ A．full with　　　　　　　B．full of C．fill with D．filled of ‎(C)2.There is much rubbish ________ the bottom of the river.‎ A．in　　 　B．to　　 　C．at　　 　D．on ‎(B)3.Some ________ went to the beach to see what happened.‎ A．fisherman B．fishermen C．fishermans D．fishermens ‎(A)4.Every student should play a part ________ keeping the classroom clean.‎ A．in　　　B．to　　　C．at　　　D．on 环节说明：听说结合，第一时间向学生传达语言目标，通过对话练习和小结训练，使语言目标得以强化。‎ Step 3　完成教材2a－2c的任务 ‎1．朗读2a和2b中的词组和句子，为听力做好准备。(3分钟)‎ ‎2．听录音，在2a中圈出Jason和Susan谈论到的污染问题，集体核对答案。(3分钟)‎ ‎3．再听一遍录音，根据录音内容把2b的句子补充完整，完成后集体核对答案。(3分钟)‎ ‎3．听第三遍录音，学生跟读。(3分钟)‎ ‎4．根据2a和2b中的听力内容，两人一组仿照2c的对话形式讨论练习对话，邀请多组同学表演对话。(5分钟)‎ 参考案例 A：The air has become really polluted around here.I'm getting very worried.‎ B：Yes，I used to be able to see stars in the sky.‎ A：The problem is that...‎ ‎5．小结训练。(3分钟)‎ ‎(D)1.My father ________ a lot，but now he has given it up.‎ A．used smoke B．is used to smoking C．was used to smok D．used to smoke ‎(C)2.My friend from America called me yesterday.We ________ for hours.‎ A．chat B．chatted C．have chatted D．had chatted ‎(B)3.There is ________ food on the table，but you can't eat ________.‎ A．too much；too many B．much too；too much ‎ C．too many；too much D．much too；too many 环节说明：通过听、说、读、写学习训练让学生掌握语言目标；并且使学生的口语表达能力在这一环节得到进一步提升。‎ Step 4　完成教材2d的任务 ‎1．学生自读对话，回答下面的问题。(5分钟)‎ ‎1)What should we do to cut down air pollution?‎ ‎2)What should we do to solve the waste pollution?‎ ‎3)将下列句子翻译成汉语：‎ Our actions can make a difference and lead to a better future.‎ ‎2．大声朗读2d 对话，读熟后与搭档结对练习，分角色表演对话。(3分钟)‎ ‎3．邀请三组来表演对话。(5分钟)‎ ‎4．小结训练。(3分钟)‎ ‎1．我们应该乘公交车或地铁，而不是开车。‎ We_should_take_a_bus_or_by_underground_rather_than_drive_a_car.‎ ‎2．记着把垃圾扔到垃圾箱里。‎ Remember_to_throw_the_rubbish_in_the_bins.‎ ‎3. 我们齐心协力就能带来变化，创造更加美好的未来。‎ So_together，our_actions_can_make_a_difference_and_lead_to_a_better_future.‎ 环节说明：将对话问题化，既能锻炼学生的思维能力又能加深对课文的理解。小结训练又对对话中的重要句型进行了巩固加深。‎ Step 5　问题探究 ‎ ‎1．used to 的用法 ‎1) 他曾经打过篮球。‎ He_used_to_play_basketball.‎ ‎2) 当我还是孩子的时候，我不喜欢苹果。‎ When_I_was_a_child，I_didn't_use_to_like_apples./When_I_was_a_child，I_usedn't_to_like_apples.‎ ‎3) 你在来这儿之前住在哪里？‎ Where_did_you_use_to_live_before_you_came_here？/Where_used_you_to_live_before_you_came_here?‎ used to do意为“过去常常做某事”，暗指现在已经不存在的动作或状态。后跟动词原形。否定形式为：didn't_use_to_do或usedn't_to_do。疑问形式为：Did＋主语＋use_to_do或Used＋主语＋to_do。‎ ‎(　)3.The new teacher always encourage little Tom.This has made a big difference ________ him.‎ A．to　　　B．on　　　C．at　　　D．in 答案选择A，本题中含有短语make a difference to...表示“对……产生影响或作用”。‎ 请学生们做前面课时训练部分。‎ ‎ Section A (3a－3b) ‎ ‎1．重点单词：shark，fin，cruel，harmful，chain，ecosystem，industry，law，scientific ‎2．重点短语：be harmful to，at the top of，the food chain，such as，so far ‎3．重点句式：‎ Many have heard of shark fin soup.‎ This is not only cruel，but also harmful to the environment.‎ The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.‎ ‎ 1.重点短语及句型 ‎2．现在完成时态 ‎3．连词的用法 ‎1．重点短语及句型 ‎2．现在完成时态 ‎3．连词的用法 一、预习课本P99单词并背诵，完成下面的汉译英。‎ ‎1．鲨鱼____________　　2.鱼鳍____________‎ ‎3．残酷的____________ 4.链子____________‎ ‎5．工业____________ 6.法律____________‎ ‎7．科学的____________ ‎ ‎8.生态系统________________________________________________________________________‎ 二、认真预习3a－3c找出下列短语和句型。‎ ‎1．对……有害________________________________________________________________________‎ ‎2．在……的顶部________________________________________________________________________‎ ‎3．食物链________________________________________________________________________‎ ‎4．到目前为止________________________________________________________________________‎ ‎5．例如________________________________________________________________________‎ ‎6．许多人都听说过鱼翅汤。‎ ‎________________________________________________________________________‎ ‎7．这不仅是残酷的，而且对环境有害。‎ ‎________________________________________________________________________‎ ‎8．一些鲨鱼的数量在过去的二三十年间降低了百分之九十多。‎ ‎________________________________________________________________________‎ ‎ ‎ Step 1　情景导入 Teacher：Have you ever heard of shark fin soup？People catch sharks to cut off their fins to cook soup.So the number of the sharks is getting smaller and smaller.And now we must find some ways to protect sharks.Now please discuss the problem with your partner.‎ 环节说明：由鲨鱼数量减少作为话题导入本节课的学习，引起学生的兴趣，过渡自然。‎ Step 2　完成教材3a－3b的任务 ‎ ‎1．阅读3a短文，将3a中的表格填写完整，完成后分小组核对答案，教师点拨。(3分钟)‎ ‎2．认真阅读短文，根据短文内容用3b中方框中的连词将句子补充完整，小组内互相交流核对答案后大声朗读句子。(5分钟)‎ ‎3．再次仔细阅读短文，理解每一句话的意思，小组合作解决遇到的疑难问题。(5分钟)‎ ‎4．教师点拨短文中出现的重难点。(5分钟)‎ ‎5．熟读短文，识记背诵知识要点。(5分钟)‎ ‎6．小结训练。(3分钟)‎ ‎(C)1.There are many beautiful flowers ________ the top of the hill.‎ A．in　　　　B．with　　　C．at　　　　D．for ‎(A)2.So far，the numbers of some kinds of books in the library ________.‎ A．have increased B．has increased C．increase D．increases ‎(D)3.I think drinking milk is good ________ our health.‎ A．in B．with C．at D．for ‎(B)4.—Excuse me，did he use to like playing basketball?‎ ‎—He ________ play it，but now he never plays it.‎ A．used for B．used to C．was used to D．got used to ‎(B)5.All the students went to school on time yesterday ________ it rained heavily.‎ A．but B．although C．/ D．if 环节说明：通过阅读分析文章，学生的阅读分析能力在这一环节得到提升；小结训练又及时巩固强化了重要的知识点。‎ Step 3　问题探究 ‎(　)1.So far this year，many new schools ________ in Wenchuan with the help of the government.‎ A．build B．are built C．will built D．have been built 答案选择D，so far意为“到目前为止”，用于现在完成时态中。‎ 请学生们做前面课时训练部分。‎ ‎ Section A (Grammar Focus－4c) ‎ ‎1．重点单词：afford，reusable，transportation ‎2．重点词组：take part in，turn off，pay for，take action ‎3．重点句式：‎ Have you ever taken part in an envionmental project?‎ We can't afford to wait any longer to take action!‎ ‎ 情态动词的用法 情态动词的用法 一、预习课本P100新单词并背诵， 完成下面的汉译英。‎ ‎1．承担得起________________________________________________________________________‎ ‎2．可重复使用的________________________________________________________________________‎ ‎3．交通运输________________________________________________________________________‎ 二、认真预习Grammar Focus－4c找出下列短语和句型。‎ ‎1．参加________________________________________________________________________‎ ‎2．关掉________________________________________________________________________‎ ‎3．付费________________________________________________________________________‎ ‎4．采取行动________________________________________________________________________‎ ‎5. 你曾经参加过环境保护项目吗？‎ ‎________________________________________________________________________‎ ‎6．我们不能再等待，要采取行动了。‎ ‎________________________________________________________________________‎ ‎ ‎ Step 1　情景导入 Teacher：The environmental problems are more and more important.And we should do something to help save the enviroment.Now please discuss with your partner and make a list of things that we can do.‎ 环节说明：由学生提出改善环境的方法，并且列出来让每个学生都关注环境。‎ Step 2　完成教材Grammar Focus的任务 ‎1．学生大声朗读Grammar Focus的句子。(5分钟)‎ ‎2．小结训练。(5分钟)‎ We_trying_to_save_the_earth！‎ ‎(我们正在努力拯救地球！)‎ The_river_used_to_be_so_clean.‎ ‎(小河过去是如此的清澈。)‎ The_air_is_badly_polluted.‎ ‎(空气被污染得很严重。)‎ No_science_studies_have_shown_that_shark_fins_are_good_for_health.‎ ‎(没有科学研究表明鱼翅对健康有好处。)‎ We should help save the sharks.‎ ‎(我们应该帮助拯救鲨鱼。)‎ ‎　　环节说明：通过对Grammar Focus句型的填空练习，能够使学生更好地理解掌握本单元的重点语法和句型。‎ Step 3　完成教材4a－4c的任务 ‎1．认真阅读4a的对话，然后用所给单词的正确形式填空，完成后教师点拨核对答案，两人一组练习对话。(2分钟)‎ ‎2．认真阅读4b短文，用情态动词补全短文，完成后小组内互相交流所写句子。(3分钟)‎ ‎3．列出人们为保护环境而采取的措施，完成后仿照4c的形式和搭档讨论各自所列出的措施。(3分钟)‎ 参考案例 A：I think that everyone should use public transportation.‎ B：I disagree.It's difficult for parents with young children to use public transportation.‎ ‎4．小结训练。(4分钟)‎ ‎1. 我能买得起这套房子。‎ I_can_afford_to_buy_the_house.‎ ‎2．记着离开教室的时候关灯。‎ Remember_to_turn_off_the_lights_when_you_leave_the_classroom. ‎ ‎3．我们应该使用可重复利用的袋子而不是塑料袋。‎ We_should_use_the_reusable_bags_rather_than_plastic_bags.‎ ‎4．如果你丢了这本书，你应该赔偿。‎ If_you_lose_the_book，you_should_pay_for_it.‎ 环节说明：通过本环节的学习，学生对前一阶段所学的知识进行了复习巩固。‎ Step 4　问题探究 ‎(　)1.He ________ English，but now he ________English every morning.‎ A．used to hate；is used to read B．is used to hate；used to read C．used to hate；is used to reading D．is used to hate；is used for reading 答案选择C。used to意为“过去常常”，其后跟动词原形，表示过去的习惯、过去经常发生的动作或状态；be used to doing sth.表示“习惯于做某事”，其中to是介词，后接名词或动名词。be used to＝get used to表示“渐渐习惯于……”；be used to do sth.＝be used for doing sth.是被动语态，表示“被用来做某事”。根据句意“他过去讨厌英语，但是现在他已经习惯于每天早上读英语”，答案选择C。‎ 请学生们做前面课时训练部分。‎ Section B (1a－1e) ‎ ‎1．重点单词：recycle，napkin ‎2．重点句型：‎ Recycling paper is really easy.‎ We really shouldn't use paper napkins.‎ ‎ 1.时态：一般现在时、一般过去时、一般将来时 ‎2．情态动词 ‎1．时态：一般现在时、一般过去时、一般将来时 ‎2．情态动词 一、预习课本P101新单词并背诵， 完成下面的汉译英。‎ ‎1．再利用________________________________________________________________________‎ ‎2．餐巾；餐巾纸________________________________________________________________________‎ 二、认真预习1a－1e找出下列句型。‎ ‎1．回收利用纸张是很简单的。‎ ‎________________________________________________________________________‎ ‎2．我们真的不需要使用餐巾纸。‎ ‎________________________________________________________________________‎ Step 1　情景导入 Teacher：There are many ways to save the earth，such as recycling books and paper，stopping riding in cars and so on.Do you know other ways？Now please read the ways in 1a and remember them.‎ 环节说明：开门见山，直接引出本节课的学习内容，简单明了。‎ Step 2　完成教材1a－1e的任务 ‎1．大声朗读1a中的词组和句子，然后两人一组互相提问。(3分钟)‎ ‎2．我们能为拯救地球做些什么事情呢？将1a中的事情按由易到难的顺序标出序号。(2分钟)‎ ‎3．和搭挡比较并互相交流1a中的答案，并仿照1b的形式两人一组练习对话，完成1b。(4分钟)‎ ‎4．认真听录音，勾出Julia和Jack谈论的事情，集体核对答案。(3分钟)‎ ‎5．再听一遍录音，根据对话内容勾出Julia正在做的事情，把他要做的事情和他将永远不会做的事情圈出来，完成后请几个学生展示答案，教师点拨。(5分钟)‎ ‎6．再听一遍录音，并跟读，整体感知对话。(3分钟)‎ ‎7．仿照1c的形式利用听力材料中的信息练习对话，并邀请学生表演对话。(5分钟)‎ 参考案例 A：We really shouldn't use paper napkins，you know.‎ B：I know.I stopped using them last year.‎ ‎5．小结训练。(3分钟)‎ ‎(D)1.—Listen！The pop music is wonderful.‎ ‎—Hush！Grandma is sleeping.You'd better ________the radio.‎ A．turn into　　　　　　　B．turn out C．turn up D．turn off ‎(D)2.Since June 1st in 2008，all the supermarkets have ________ free plastic bags.‎ A．to stop to provide B．to stop providing C．stopped to provide D．stopped providing ‎(A)3.It's hard ________ a suitable job.‎ A．to look for B．to search C．to find out D．to look at Step 3　问题探究 ‎(　)1.It's easy ________ lost in a big city like Tokyo.‎ A．to get B．get C．got D．getting 答案选择A。动词不定式作主语时，常用形式主语it代替主语放在句首，而将真正的主语动词不定式(短语)放到句尾。‎ 请学生们做前面课时训练部分。‎ ‎ Section B (2a－2e) ‎ ‎1．重点单词：gate，bottle，president，inspiration，iron，work，metal，creativity ‎2．重点短语：throw away，put sth. to good use，pull...down，upside down，bring back，set up ‎3．重点句式：‎ Have you ever thought about how these things can actually be put to good use?‎ The windows and doors come from old buildings around her town that were pulled down.‎ She built a house herself out of rubbish.‎ The top of the house is an old boat turned upside down.‎ Not only can the art bring happiness to others，but it also shows that even cold，hard iron can be brought back to life with a little creativity.‎ ‎ 1.重点短语和句型 ‎2．现在完成时态和被动语态 ‎1．重点短语和句型 ‎2．现在完成时态和被动语态 一、预习课本P102新单词并背诵，完成下面的汉译英。‎ ‎1．大门____________　　2.瓶子____________‎ ‎3．负责人__________ 4.灵感____________‎ ‎5．铁______________ 6.作品____________‎ ‎7．金属____________ 8.创造力____________‎ 二、认真预习2a－2e内容找出下列短语和句型。‎ ‎1．扔掉________________________________________________________________________‎ ‎2．好好利用某物________________________________________________________________________‎ ‎3．拆下________________________________________________________________________‎ ‎4．上下颠倒________________________________________________________________________‎ ‎5．恢复________________________________________________________________________‎ ‎6．建立________________________________________________________________________‎ ‎7．你曾经考虑过怎样才能使这些东西真正地被好好利用吗？‎ ‎________________________________________________________________________‎ ‎8. 窗户和门来自她所在城镇附近的被拆毁的旧建筑。‎ ‎________________________________________________________________________‎ ‎9．房子是她自己用废弃物建成的。‎ ‎________________________________________________________________________‎ ‎10．房子的顶部是一条翻转过来的旧木船。‎ ‎________________________________________________________________________‎ ‎11．艺术不仅可以给他人带来快乐，而且也表明只要一点点创造力，即便是冰冷、坚硬的铁也可以恢复活力。‎ ‎________________________________________________________________________‎ Step 1　情景导入 ‎(Show some things to the students.They are all made of things that people don't need anymore.)‎ Teacher：The things are made of things that we don't need.Have you ever thought about how these things can actually be put to good use.Today we will learn a passage about this picture.‎ 环节说明：利用“变废为宝”制作出来的物品导入新课，易于引起学生的学习兴趣，过渡自然。‎ Step 2　完成教材2a－2c的任务 ‎1．看2b中短文的标题和图片，猜想一下这篇文章和什么有关，小组内互相交流发表看法。(3分钟)‎ ‎2．阅读2b中的文章，完成2b的表格，完成后请学生展示答案，教师点拨。(3分钟)‎ ‎3．再次认真阅读短文，根据文章内容用2c中的短语将句子补充完整，完成后请学生展示答案，教师点拨。(3分钟)‎ ‎4．再次仔细阅读短文，理解每一句话的意思，小组合作解决遇到的疑难问题。(5分钟)‎ ‎5．教师点拨短文中出现的重点和难点。(5分钟)‎ ‎6．熟读短文，识记并背诵知识要点。(5分钟)‎ ‎7．小结训练。(7分钟)‎ ‎(A)1.The house is really old.You'd better________.‎ A．pull it down　　　　　B．pull down it C．pull it up D．pull up it ‎(B)2.—Do you believe that paper is made________ wood?‎ ‎—Yes，I do.And you can see that books are made________ paper.‎ A．from；from B．from；of C．of；from D．of；of ‎(C)3.It's summer now.The weather is getting.‎ A．higher and higher B．lower and lower C．hotter and hotter D．colder and colder ‎(B)4.The math problem is not difficult，and you can do it all by________.‎ A．themselves B．yourself C．ourselves D．myself 环节说明：通过本环节的学习，学生不仅锻炼了阅读能力，而且通过小结训练对重要知识点进行了巩固练习。‎ Step 3　完成教材 2d－2e的任务 ‎1．学生两人一组互相提问2d方框中的单词。(3分钟)‎ ‎2．阅读短文，以方框中的单词为依据在2b短文中画出相应的单词，完成后小组内交流答案并比较说明方框中的单词和短文中的单词有什么不同，教师点拨。(5分钟)‎ ‎3．让学生分组写出为拯球环境，我们能做哪些事，政府又能做哪些事。先小组内讨论，然后再全班交流。好的建议可以号召同学们立即执行。‎ 环节说明：通过这一环节的学习，学生的阅读能力得到进一步锻炼和提升；通过师生交流互动，增强了学生的环保意识，调动了学生的环保积极性。‎ Step 4　问题探究 ‎(　)1.The school was destoryed in the earthquake.So we have to ________.‎ A．pull down it B．put it down C．turn it down D．pull it down 答案选择D，pull down意为“拆掉”，是动副结构的短语，代词要放在中间。 ‎ ‎(　)2.She built herself a house out ________ trash.‎ A．in　　B．with　　C．of　　D．to 答案选择C，build...out of...意为“用……建造”。‎ 请学生们做前面课时训练部分。Section B (3a－Self Check) ‎ ‎1．复习本单元的重要单词、短语和句型 ‎2．完成本单元的写作 ‎ 能够运用所学的知识完成本单元的写作 能够运用所学的知识完成本单元的写作 ‎1．自主复习本单元的单词、短语和句型 ‎2．复习时态(一般现在时、一般过去时)、情态动词和被动语态 ‎ ‎ Step 1　情景导入 Teacher：There must be some nice places.And there are some places that need to be improved in our hometown.Now please say something about your hometown.‎ 环节说明：由谈论自己家乡的环境入手，既可以完成本节课的学习目标；又能活跃课堂气氛；还可以使学生的口语表达能力和语言组织能力都得到提升。‎ Step 2　完成教材3a－3b的任务 ‎1．小组内互相交流自己家乡的环境，然后完成3a表格。(7分钟)‎ ‎2．结合3a记录的内容，以及3b的提示要求写一篇文章，介绍自己家乡的环境，写作时可以参考给出的句型及短语。完成后小组内互相交流纠错，借鉴好词好句，教师抽查点拨。(10分钟)‎ 参考案例 I remember that when I was a child，there was a river near our village.The water in the river was very clean and there were also some kinds of fishes.They swam there happily.We often caught fish in the river.But now the river is polluted.People often throw rubbish into it.The water is very dirty and smells bad.There is no fishes any more.As a result，we need to protect and save water resource，for example，we shoudn't leave water running after using it.Besides，we mustn't throw rubbish into the river.‎ 环节说明：通过对这个教学环节的学习，锻炼了学生的写作能力和口语表达能力。‎ Step 3　完成教材Self Check的任务 ‎1．按要求改写单词，完成后学生展示答案，教师点拨重难点及易错点。(4分钟)‎ ‎2．大声朗读2中的句子，然后将句子和时态相匹配。(2分钟)‎ ‎3．写出减少各类污染的方法，完成后小组内互相交流。(5分钟)‎ 环节说明：通过对这一环节的学习，让学生熟练掌握了各种时态的运用及词性变化。‎ Step 4　问题探究 ‎(　)1.It does't need to ________ in such a hurry.‎ A．do　　　　　　B．be do C．be done D．doing 答案选择C，need to be done意为“需要被……”。‎ 请学生们做前面课时训练部分。‎