资源简介

Unit2 Discovering Userful Structure
课时内容
Report an ongoing event
主题语境：人与自然 主题群：自然生态
子主题：野生动物保护 语篇类型：习题
文本分析：本板块的目标语法结构是现在进行时的被动语态，主要围绕野生动物保护的主题 展开。
课时目标
学完本课后，学生能够：
1.学会识别现在进行时的被动语态。
2.掌握现在进行时的被动语态的形式和功能，并能正确使用现在进行时的被动语态完成相 关实践。
3.准备一份关于保护动植物实施措施的报告，能恰当使用现在进行时的主动语态和被动语 态。
重点难点 重点
1.引导学生识别现在进行时的被动语态的形式。
2.引导学生掌握现在进行时的被动语态的形式和意义，体会其与现在进行时的主动语态以 及一般现在时的被动语态的区别。
难点
1.引导学生能够正确运用现在进行时的被动语态完成相关练习。
2.引导学生在有关环境保护的表达中正确地运用现在进行时的被动语态，并提出自己的建 议。
教学准备 教师准备
1. 归纳学生已经学过的被动语态的知识。
2.准备一些和本单元话题有关的动植物保护的语言素材。 3.相关教学设备。
学生准备
1.复习学过的被动语态的知识，预习本课的现在进行时的被动语态的形式、意义和功能等。 2.了解如何用现在进行时的被动语态描述人和事。
精彩课堂
Stepl 学习理解
活动一：感知与注意 1.Discuss.
Ask students to observe the pictures and state what the persons are doing.Then have students change the sentences they said into passive voice.
① ② ③ ④
Suggested answers:
①The workers are building the houses.→The houses are being built by the workers.
②Someone is hunting an African elephant,→An African elephant is being hunted (by someone).
③He is feeding a Tibetan antelope.→A Tibetan antelope is being fed (by him).
④People are protecting pandas in Wolong Natural Reserve.→ Pandas are being protected in Wolong Natural Reserve.
【设计意图】通过观察图片，描述图片内容，并运用被动语态进行句式转换，导入主题。 2.Ask students to underline the present continuous passive voice in the sentences and discuss its function.(Activity 1)
Suggested answers:
·African elephants are being hunted. ·What is being done to help them
·What measures are being taken to help them
【设计意图】让学生发现句子中的现在进行时被动语态，初步感知其形式。 活动二：获取与梳理
1.Ask students to find more sentences with the present continuous passive voice in this unit.
【设计意图】在本单元尤其是课文中找到相关结构的句子，帮助学生熟悉现在进行时被动请 态的形式，体会其表达的重点。
2.Ask students to read the sentences and choose the suitable verb forms to complete the sentences.(Activity 2)
Suggested answers:
①working;being painted ②being written ③being attacked
④being watched ⑤hunting;being hunted ⑥being reduced
3.Ask students to discuss the following question with a partner. ·What is the difference among the different verb forms
Suggested answer:
Verb forms 时态、语态
be(am/is/are)being done 现在进行时的被动语态 Present Continuous Passive Voice
be (am/is/are)doing 现在进行时的主动语态 Present Continuous Active Voice
be(am/is/are)done 一般现在时的被动语态 Simple Present Passive Voice
【设计意图】学生通过阅读活动2的句子，选择正确的选项，然后核对答案，并讨论不同语 法结构在形式和意义上的差别。
活动三：概括与整合
Ask students to read the sentences and sum up the sentence patterns of the Present Continuous Passive Voice.
①Rain forests are being cut and burnt at a speed that they will disappear from the earth in the near future
②Do you know any other endangered wildlife in China that is not being protected
③Is their fur being used to make sweaters for people like you
④What good things are being done here to save local wildlife
【设计意图】通过思考发现现在进行时的被动语态的构成，锻炼学生归纳总结的能力。 【备注】语法讲解详见“教学资源链接”。
Stepll 应用实践
活动四：内化与运用
1.用括号内所给动词的正确时态和语态填空。
①The horses (feed)by the keeper at the moment.
②The problem on howto protect deer (debate)at the meeting now.
③Almost 50%of the population of red pandas can be found in the Eastern Himalayas.Their homes in the forest (clear)by human activities nowadays.With less than 10,000 of these creatures left in the wild,this is unacceptable.
2. 完成句子。
①关于在哪儿建厂的问题正在被讨论。
The question about where the factory is going to be built now.
②正在设计一个保护自然资源的项目。
A project about protecting the natural resources
③受到攻击时应保持冷静。
You should stay cool when you
④我感到很迷惑，我们商店的商品老是被偷。
I feel very puzzled that the goods in our shop
Suggested answers;
①is being discussed
②is being designed
③ are being attacked
④are always being stolen
【设计意图】本活动让学生将所学知识内化，在真实语境中运用现在进行时的被动语态。
活动五：描述与阐释 Guessing game.
(1)Ask students to imagine that they are visiting a place or taking part in an event.And have them
think about the various things that are being done.
(2)Ask students to write sentences using the present continuous passive voice to describe what is happening.
(3)Ask the other students to guess.
【设计意图】学生想象场景并运用现在进行时的被动语态进行描述，其他学生猜测场景。由 此复习学过的知识点，并为后面的活动做好铺垫。
SteplII 迁移创新
活动六：推理与论证
1.Liu Tao would like to express his concern over the wetland in his hometown.Ask students to help him finish the passage with the present continuous passive voice of the verbs in brackets.(Activity 3)
2.Discuss.
·What is happening to the small birds in the wetland ·What is happening to the wild ducks
·What is happening to the fish and snakes ·What is happening to the wetland
Suggested answers:
·They are being caught with nets.
·They are being sold at food markets.
·They are being killed for food in restaurants.
·The wetland is being destroyed.Some parts are being covered with new houses.You can see rubbish everywhere.The wetland is being polluted seriously every day.
【设计意图】通过语法填空及讨论、回答问题的形式，强化语言知识的语义建构功能，并引： 生关注现在进行时被动语态结构的运用。
活动七：想象与创造 Think and apply.
Ask students to work in groups to discuss the questions below.Have them prepare to a presentation of their ideas to the class.
·What do you know is being done in your neighbourhood to protect animals and plants ·What suggestions do you have
Sample:
A:What is being done in our neighbourhood to protect animals and plants B:Well,the old trees in the park are being protected.
A:Oh yes.They are being protected not only because they are very old but also because they are the natural habitat for songbirds.
C:That's right.Perhaps they could help protect the birds by making the roads around the park free from cars.
D:Yes,that would certainly help make the air cleaner for them.
【设计意图】在语境中帮助学生学会运用语法知识理解和表达意义，引导学生不断加强准、 恰当、得体地使用语言形式的意义，倡导以语言运用为导向的“形式-意义-使用”三维动语法
观，促进能力向素养的转化。
板书设计
Unit 2 Wildlife Protection
Period Ill Discovering Useful Structures
Verb forms 时态、语态
be(aw/is/are)being done 现在进行时的被动语态 Present Continuous Passive Voice
be(am/is/are)doing 现在进行时的主动语态 Present Continuous Active Voice
be(am/is/are)done 一般现在时的被动语态 Simple Present Passive Voice

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