Unit 2 Period 4 课时学案 单元语法讲练(Discovering Useful Structures)-【名师导航】2025-2026学年高中英语必修第二册教师用书配套课件（人教版）

该高中英语课件聚焦“现在进行时的被动语态”，通过“美文诵读”呈现6个野生动物保护主题例句引导学生感知结构，再经“语法体悟”归纳is/are being done形式，搭建从输入到归纳的学习支架，衔接后续语法精讲与分层训练。 其亮点是主题语境与语法深度融合，所有例句和练习围绕“人与自然”主题，如短文语法填空描述“habitats being threatened”，培养语言能力和文化意识。训练从句型转换到语篇应用螺旋上升，易错点提示提升思维品质。学生能在语境中掌握语法，教师可直接使用系统资源提高教学效率。

UNIT 2　WILDLIFE PROTECTION 主题语境 人与自然 —— 人与动植物 Period 4　课时学案 单元语法讲练 (Discovering Useful Structures) 现在进行时的被动语态 美文诵读 We are sorry to be aware that nowadays great damage ①is being done to animals by human beings．A great many animals are endangered just because their habitats ②are being threatened．Rainforests ③are being cut at such an alarming rate that they will disappear in the near future．Rivers and lakes ④are being polluted by chemical factories．Another reason why many species are dying out is that they ⑤are being killed either for food or for their fur．What if we continue to do whatever we like? Luckily，with WWF's help，more wildlife ⑥is being protected in a wildlife park and the population is increasing quickly． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 语法体悟 ①、⑥为“(主语＋)is＋being done... ”结构 ②、③、④、⑤为“(主语＋)are＋being done... ”结构 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 一、含义 现在进行时的被动语态表示现在或现阶段正在进行或发生的被动动作，强调主语是动作的承受者。 二、结构 1．肯定式：主语＋am/is/are＋being done... Some trees are being cut down in the park． 公园里的一些树木正在被砍伐。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 2．否定式：主语＋am/is/are＋not being done... It is reported that the water in the lake is not being protected now． 据报道，这个湖里的水现在没有得到保护。 3．一般疑问式：Am/Is/Are(not)＋主语＋being done...? Are the babies being taken care of by this nurse？这些婴儿正由这个护士照看吗？ 4．特殊疑问式：疑问词＋am/is/are(not)＋主语＋being done...? When is the sports meeting being held in our school? 我们学校将在什么时候举行运动会？ 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 即时训练1 句型转换 They are building a modern school in his hometown． ①____________________________________________(改为被动语态) ②______________________________________________ (把①句改为否定句) ③_____________________________________________把①句改为一般疑问句) ④___________________________________ (对①句就in his hometown进行提问) A modern school is being built in his hometown． A modern school isn't being built in his hometown． Is a modern school being built in his hometown？ Where is a modern school being built？ 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 三、用法 1．表示说话时正在进行的被动动作。句中常用now，at the moment等时间状语。 My younger sister is now being interviewed． 我的妹妹现在正在接受采访。 He is now being treated in China． 他现在正在中国接受治疗。 2．表示现阶段正在进行的被动动作(说话时不一定在进行)。 These animals are being hunted at such a speed that they will disappear soon． 这些动物以这样的速度被捕杀，它们很快就会消失。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 3．表示一种习惯的被动行为，常与always，constantly，often等词连用，表示赞赏、羡慕、讨厌等感情色彩。 I feel very surprised that the window of our classroom is often being broken． 我感到非常吃惊的是我们教室的那扇窗户经常被打破。 Tom is always being praised by the teacher． 汤姆总是被老师表扬。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 4．与某些情态动词连用，表示对正在发生的动作的推测。 Jim may be being interviewed by the reporters at the very moment． 吉姆此刻可能正在接受记者们的采访。 —Do you know what Smith is doing? ——你知道史密斯正在做什么吗？ —He is ill．He may be being examined by the doctor． ——他生病了。他可能正在接受医生的检查。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 即时训练2 补全句子 ①Radios of the old type _______________ (正被替代) by new ones． ②The plan to explore the South Pole _______________(正在被制订) these days． ③He ___________________(正在被采访) by our headmaster now． are being replaced is being made is being interviewed 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 四、使用现在进行时的被动语态应注意的问题 1．不及物动词(短语)、非延续性动词、表示存在意义/所属关系/静态特征的动词以及系动词不用于现在进行时的被动语态。 这本书是他的。 [正]The book belongs to him． [误]The book is being belonged to him． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 2．一些表示状态、心理活动、拥有、存在等的动词，如have，want，need，like，realize等，一般不用于现在进行时的被动语态，而常用于一般现在时的被动语态，表示此时此刻或目前主语正在承受谓语动词表示的动作。 玛丽，过来，有你的电话。 [正]Mary，come here．You're wanted on the phone． [误]Mary，come here．You're being wanted on the phone． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 3．“be＋under/in/on等介词＋名词”结构可表示现在进行时的被动语态的含义。 The problem is under discussion (is being discussed) at the meeting． 这个问题正在会上讨论。 The telephone is in use (is being used) now． 这部电话现在正在使用中。 Many new cars are on show (are being showed)． 许多新车正在展出。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 课时提升作业(五)　(UNIT 2　Discovering Useful Structures) Ⅰ．单句语法填空(共8小题；每小题1.5分，满分12分) 1．We need to be aware that some natural habitats ________________ (destroy) nowadays． 2．What measures _____________(take) to help the endangered animals now? (建议用时：45分钟　总分：92.5分) are being destroyed are being taken 3．Rainforests _____________ (cut) at so alarming a rate that they will die out soon． 4．Look! The goods ________________(deliver)by these smart robots． 5．A lecture about how to deal with pressure ____________ (give) at present． 6．Presently the ocean ______________ (pollute) by a lot of rubbish that causes animals' deaths． are being cut are being delivered is being given is being polluted 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 7．My digital camera ______________(mend)，so I can't use it now． 8．Nowadays science and technology _________________ (develop) so rapidly that people can hardly catch up with its pace． is being mended is being developed 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ⅱ．完成句子(共8小题；每小题2分，满分16分) 1．布朗教授正在给大家做一场关于英国文化的讲座。 __________________________________ by Professor Brown． 2．一些措施正在被采取来保护野生动物。 ___________________________to protect the wild animals． A lecture on English culture is being given Some measures are being taken 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 3．我现在很忙。我正在填写一份新工作的申请表。 I'm busy right now．I ___________________________ for a new job． 4．这部电影很受年轻人的欢迎，正在全国各地放映。 This film is popular with young people and _____________around the country． am filling in an application form is being shown 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 5．现在，在人民的辛勤劳动下，中国正在取得很大的进步。 Now _______________________ in China with the help of the people's hard work． 6．听！优美的中国音乐《高山流水》正在被演奏。 Listen! Beautiful Chinese music High Mountains and Flowing Waters ____________． great progress is being made is being played 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 7．我写信是想告诉你，校园里正在举行一个有趣的社团活动。 I'm writing to tell you that _________________________________on campus now． 8．不要制造任何噪音。这个孩子正在接受医生的检查。 Don't make any noise．The child _______________ by a doctor． an interesting club activity is being held is being examined 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ⅲ．短文语法填空(共8小题；每小题1.5分，满分12分) It is true that nowadays great damage 1．____________ (do)to animals by human beings．A number of animals are endangered just because their habitats 2．__________________ (threaten)．Rainforests 3．_________ _______ (reduce) at such an alarming rate that they 4．____________ (disappear) in the near future．Rivers and lakes 5．________________ (pollute)by chemical factories．Another reason why many species are dying out is that they 6．______________ (kill) either for food or for their fur．What if we continue to do whatever we like? is being done are being threatened are being will disappear are being polluted are being killed reduced 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Luckily，an organization called WWF is very concerned about this problem．With its help，more wildlife parks 7．____________ (build)to protect endangered animals at present．For example，the African elephants now 8．________________ (protect)in a wildlife park and the population is increasing quickly． are being built are being protected 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ⅰ．阅读理解(共4小题；每小题2.5分，满分10分) Roadkill，the killing of an animal by a car hitting it on the road，is a serious problem in the United States．In the U．S．alone，there are more than a million car accidents per year involving wildlife．For many species，it is the leading cause of death．In addition，major roads can separate animal populations and destroy their habitats．Animals lose access (通道) to large areas of their habitats，which makes it much harder for many animals to find food and a mate． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) As people have become more aware of the danger to humans and animals，animal crossings are becoming more common．The crossings can come in many forms．The type depends on the species that need to cross and the geographic features (特征)of the land．The most common forms are bridges，overpasses and tunnels．Planners are increasingly including them when they design highways and road improvements．The crossings greatly reduce the number of crashes，provide a safe corridor for animals and reconnect animal habitats． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Wildlife bridges are usually covered in native plants．In the United Kingdom，people often call them “green bridges”．The idea is to make the crossing look like a natural part of the landscape，so animals will cross there． The idea was first developed in France in the 1950s．It took off in the Netherlands，where more than 600 crossings have been built．The Dutch built the world's longest animal crossing，the Natuurbrug Zanderij Crailoo，which is more than a half mile． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 【语篇解读】　本文是一篇说明文。文章主要介绍了随着人们因人类活动对动物造成危险的意识的提高，人们开始建设越来越多的动物通道。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 1．What can we learn from paragraph 1? A．Major roads give way to animal habitats． B．Animal habitats can be destroyed by roadkill． C．Many animals lose their lives due to roadkill． D．Major roads provide animals with access to food． √ C　[推理判断题。根据第一段中“Roadkill，the killing of an animal by a car hitting it on the road，is a serious problem in the United States．In the U．S．alone，there are more than a million car accidents per year involving wildlife．”可知，许多动物因车祸而失去了生命。故选C。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 2．What do planners consider when deciding the crossing forms? A．Human activities and animal habitats． B．Corridor safety and habitat connection． C．Highway designs and road improvements． D．The wildlife species and land features． √ D　[细节理解题。根据第二段中“The crossings can come in many forms．The type depends on the species that need to cross and the geographic features of the land．”可知，规划人员在决定通道形式时考虑野生动物种类和土地特征。故选D。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 3．What does the underlined phrase “took off”mean in the last paragraph? A．Went wasted．　 B．Became successful． C．Appeared suddenly．　 D．Changed immediately． √ 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) B　[词义猜测题。根据画线词所在句中的“...where more than 600 crossings have been built．”以及下一句“The Dutch built the world's longest animal crossing，the Natuurbrug Zanderij Crailoo，which is more than a half mile．”可猜测，画线短语took off为“突然成功”的意思，与B选项“Became successful”(变得成功)意思一致。故选B。] 4．What is the text mainly about? A．Green bridges．　 B．Roadkill problems． C．Wildlife crossings．　 D．Road improvements． √ C　[主旨大意题。根据文章大意以及第二段中“As people have become more aware of the danger to humans and animals，animal crossings are becoming more common．”和倒数第二段内容可知，文章主要讲的是野生动物通道。故选C。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ⅱ．阅读七选五(共5小题；每小题2.5分，满分12.5分) 40% women experience hair loss． 1 Here are 5 common reasons why women experience hair loss and how to prevent it． A surge in stress Hair loss is caused by physical or emotional stress and the condition can lead to loss up to 300 hairs a day．Commonly，do not style hair in a way to provide additional stress．Prevent scratching the scalp (头皮) or excessively brushing the hair．Moreover，joining in activities that work to reduce stress can also work to reduce the symptoms． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Recovering from dieases 1 in 5 dieases survivors report that they have suffered hair loss throughout recovery． 2 Taking time to reduce levels of stress will work to ease the hair damage over time．In the meantime，reduce the amount of times you brush the hair and the products that may cause dryness． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) A change in hormones 3 Hair loss throughout the menopause (更年期) can occur along with common symptoms．Adopting a low fat，balanced diet can work to reduce the risk of hair loss throughout menopause．Sources of fatty acids work to keep hair healthy and keeping levels of stress low can protect hair loss． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) A deficiency in vitamin D Vitamin D in the skin is metabolised (新陈代谢) by a protein that aids in keeping hair thick and reducing damage．If you are experiencing hair loss as the result of vitamin D deficiency，then it's important to gain a formal diagnosis to benefit from treatment． 4 4 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Shifts in weather Extreme weather doesn't directly result in hair loss． 5 They can lead the sufferer to frequently scratch their scalp，increasing the risk of the hair damage and therefore thinning．There are several treatment shampoos that can work to decrease its symptoms and therefore control the risk of hair damage．Keeping the scalp hydrated is vital． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) A．Cold weather is also a common factor． B．However，it may worsen symptoms． C．Hormonal changes can contribute to hair loss． D．Lack of Vitamin D may not facilitate hair growth． E．Temporary hair loss commonly occurs after flu and fever． F．Internal and external factors play a role in female hair loss． G．Treatment can't be described as simple as taking vitamin D tablets． 【语篇解读】　本文是一篇说明文。文章主要介绍了女性脱发的五个常见原因以及如何预防脱发。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 1．F　[根据上句“40% women experience hair loss．”和下文“Here are 5 common reasons why women experience hair loss and how to prevent it．”可知，设空处应为脱发的原因，F项“Internal and external factors play a role in female hair loss．”符合题意。故选F。] 2．E　[根据上句“1 in 5 dieases survivors report that they have suffered hair loss throughout recovery．”可知，设空处对这一现象作出总结，E项“Temporary hair loss commonly occurs after flu and fever．”符合题意。故选E。] 3．C　[根据本段的小标题“A change in hormones”可知，设空处承接小标题说明荷尔蒙的变化对脱发的影响，C项“Hormonal changes can contribute to hair loss．”符合题意，故选C。] 4．G　[根据上句“If you are experiencing hair loss as the result of vitamin D deficiency，then it's important to gain a formal diagnosis to benefit from treatment．”可知设空处要讲到进行正式治疗的相关内容，G项“Treatment can't be described as simple as taking vitamin D tablets．”承接上句，符合题意。故选G。] 5．B　[根据上句“Extreme weather doesn't directly result in hair loss．”可知，设空处应为极端天气对脱发的影响，B项“However，it may worsen symptoms．”符合题意，it指代上文“extreme weather”。故选B。] Ⅲ．完形填空(共15小题；每小题1分，满分15分) Last month，Koch went to make breakfast and found a(n) 1 guest using his pool．A large moose (驼鹿) was swimming in the deep end， 2 in the solar cover (太阳能覆盖膜)． “I looked out in the backyard and there's the moose very frightened and 3 ，”Koch told The Dodo．“She stepped on the solar cover and put her 4 through it and she was 5 trying to get free．” 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Koch has noticed more wildlife around his home in Ottawa，but he had 6 seen an animal this impressive before．He rushed outside and 7 the solar cover off the poor moose，who continued swimming around the pool，proving to be a 8 skilled swimmer． The wild moose seemed to be having trouble finding her way out of the pool，so Koch called the police and wildlife services to see if they could 9 a hand．“She looked so pitifully sad out there that my wife said，‘I want to give her a 10 ．’” 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Workers from wildlife services intended that they would get her to a safer spot，but they couldn't 11 it until she was out of the water．“The 12 thing that happened was that after 3.5 hours she climbed out of the shallow end and 13 the fence，”Koch said． The moose 14 unhurt，but the same can't be said for Koch's pool — which now has two hoof-sized (马蹄大小的) holes in the 15 ． 【语篇解读】　本文是一篇记叙文。文章主要讲述了一只大母驼鹿误入Koch家的泳池并被困其中，Koch通过向警察和野生动物保护组织求救，帮助驼鹿从泳池脱险的故事。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 1．A．informal　　　　　 B．ordinary　 C．honest D．unexpected D　[考查形容词词义辨析。 informal非正式的； ordinary普通的；honest诚实的； unexpected出人意料的。根据“A large moose was swimming in the deep end”可知，这只驼鹿误入Koch家的泳池，因此它是一位不速之客，an unexpected guest意为“一位不速之客”。故选D。] √ 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 2．A．attracted B．stuck C．removed D．addicted √ B　[考查动词词义辨析。attract吸引； stick困住；remove移除；addict沉迷。根据后文“in the solar cover”可知，这只驼鹿是被太阳能覆盖膜缠住了，be stuck in固定搭配，意为“被困住”。故选B。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 3．A．struggling B．sleeping C．shouting D．searching √ A　[考查动词词义辨析。 struggle挣扎；sleep睡觉； shout呼喊；search搜寻。根据上文“there's the moose very frightened”可知，驼鹿当时非常害怕，奋力挣扎。故选A。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 4．A．shoulder B．foot C．face D．back √ B　[考查名词词义辨析。shoulder肩膀；foot脚；face脸；back后背。根据上文“She stepped on the solar cover”可知，驼鹿的脚踩进去而导致被困。故选B。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) √ 5．A．narrowly B．freely C．anxiously D．unwillingly C　[考查副词词义辨析。 narrowly勉强地； freely无拘无束地；自由地；anxiously不安地；焦急地； unwillingly不情愿地。根据下文“trying to get free”和上文提到的“there's the moose very frightened”可知，驼鹿很害怕，正在焦急地挣脱。故选C。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) √ 6．A．always B．usually C．never D．sometimes C　[考查副词词义辨析。 always总是； usually通常；never从不； sometimes有时候。根据前文中的“but”可知，此句与前文构成转折关系，虽然在他家周围看到过很多野生动物，但是他从未见过如此令人印象深刻的动物。故选C。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) √ 7．A．pulled B．called C．put D．dropped A　[考查动词词义辨析。pull拉；call打电话；put放；drop掉落。句意：他冲到外面，拉开可怜的驼鹿身上的太阳能覆盖膜，驼鹿继续在游泳池里游来游去，证明自己是一个出人意料的游泳高手。故选A。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) √ 8．A．surprisingly B．poorly C．fortunately D．simply A　[考查副词词义辨析。surprisingly出乎意料地，惊人地； poorly不足地；欠佳地；fortunately幸运的是； simply简单地。上文“who continued swimming around the pool”指出驼鹿继续在游泳池里游来游去，以此证明自己是出人意料的游泳高手，故选A。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) √ 9．A．donate B．recognize C．lend D．cure C　[考查动词词义辨析。 donate捐赠；recognize识别； lend借出，给予，提供； cure治疗。lend a hand固定搭配，意为“帮助”，根据上文“Koch called the police and wildlife services to see if they could”可知，Koch给警察和野生动物服务部门打电话是为了看看他们是否能帮上忙。故选C。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) √ 10．A．lift B．hug C．smile D．credit B　[考查名词词义辨析。lift电梯；hug拥抱；smile微笑； credit学分。根据上文“She looked so pitifully sad out there”可知，看到这只驼鹿很悲伤，Koch的妻子想给她一个拥抱来安慰她，故选B。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 11．A．recover B．follow C．cancel D．manage D　[考查动词词义辨析。recover恢复； follow跟着；cancel取消；manage设法(做成某事)。根据“Workers from wildlife services intended that they would get her to a safer spot”和“until she was out of the water”可知，野生动物服务部门的工作人员本打算把它带到一个安全的地方，但他们没能做到，直到它自己离开了水。故选D。] √ 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 12．A．easier B．best C．funniest D．strangest √ B　[考查形容词词义辨析。 easier最容易的； best最好的；funniest最有趣的；strangest最奇怪的。根据下文“she climbed out of the shallow end”可知，这只驼鹿自己爬出了浅水区，这是最好的事情，故选B。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 13．A．broke into B．showed off C．jumped over D．held onto √ C　[考查动词短语词义辨析。break into闯入；show off 炫耀；jump over跳过；hold onto紧紧抓住。根据“she climbed out of the shallow end”可知，这只驼鹿从泳池的浅水处逃离泳池后，跳过围栏。故选C。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 14．A．got away B．took part C．hung back D．passe out √ A　[考查动词词义辨析。get away逃脱；take part参加；hang back犹豫；pass out昏倒。根据上文“The________________thing that happened was that after 3.5 hours she climbed out of the shallow end and________________the fence”可知，驼鹿在未受伤的情况下成功逃脱。故选A。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 15．A．top B．cover C．wall D．bottom √ D　[考查名词词义辨析。 top顶部；cover封面；wall墙；bottom底部。根据第一段中“A large moose was swimming in the deep end”可知，这只驼鹿被困在游泳池里，由此可知，Koch家的泳池的底部留下了两个蹄子大小的破洞。故选D。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ⅳ．语法填空(共10小题；每小题1.5分，满分15分) Due to the improvement of ecological and environmental 1．__________(protect) in recent years，the western part of Northeast China's Jilin Province has seen 2．_____(many) rare migratory birds than other places，searching for food in spring and autumn． With 3．__ (it) favorable geographical location and wetlands，Jilin is 4．__ important stop for migratory waterfowl，including large numbers of rare species，such as white cranes (鹤)，red-crowned cranes，white storks and Chinese merganser ducks (秋沙鸭)． protection more its an 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Western Jilin 5．__________ (focus) on water management and started major projects such as river and lake connectivity in the past decade to improve the ecological conditions． 6．_______ (locate) on the border of Jilin and Heilongjiang provinces and the Inner Mongolia (内蒙古) autonomous region，the Momoge National Nature Reserve in Baicheng city has rich natural 7．_________ (resource) and is a key habitat 8．______migratory birds in China settle．It is one of the nine major global bird migration routes，9．____more than 5 million migratory birds passing through every year． has focused Located resources where with 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) The number of white cranes 10．________ (stop) in the reserve in spring and autumn has risen to around 3，500，with a resting period of about 100 days every year． 【语篇解读】　本文是一篇说明文。文章主要介绍了近年来，由于生态环境保护的改善，东北吉林省西部地区出现了比其他地方更多的珍稀候鸟，在春季和秋季觅食。 stopping 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 1．protection　[考查词性转换。分析句子结构和意思可知，前面有形容词，这里需要名词protection作宾语，为不可数名词。故填protection。] 2．more　[考查形容词比较级。分析句子结构和意思可知，后面有than，所以这里需要形容词比较级，表示对比。故填more。] 3．its　[考查代词。分析句子结构和意思可知，这里需要形容词性物主代词，作定语，修饰后面的名词location and wetlands。故填its。] 4．an　[考查冠词。分析句子结构和意思可知，这里需要不定冠词，表示泛指，“一个”的意思，important的发音以元音音素开头。故填an。] 5．has focused　[考查动词时态和主谓一致。分析句子结构和意思可知，句中有in the past decade作时间状语，句子时态用现在完成时，主语是Western Jilin，谓语动词用第三人称单数形式。故填has focused。] 6．Located　[考查非谓语动词。分析句子结构和意思可知，动词locate和句子主语the Momoge National Nature Reserve之间是逻辑上的动宾关系，用过去分词形式作状语。故填Located。] 7．resources　[考查名词复数。分析句子结构和意思可知，这里的resource是可数名词，前面没有限定词，需要用复数，表示泛指，作宾语。故填resources。] 8．where　[考查定语从句。分析句子结构和意思可知，空格处引导定语从句，先行词habitat在从句中作地点状语，用关系副词where引导。故填where。] 9．with　[考查with复合结构。分析句子结构和意思可知，这里需要介词with，构成with复合结构：with＋名词＋doing，作伴随状语。故填with。] 10．stopping　[考查非谓语动词。分析句子结构和意思可知，动词stop是被修饰的名词white cranes主动发出的动作，用动词-ing形式，作后置定语。故填stopping。] $