Unit 2 Wildlife Protection Discovering Useful Structures 导学案（含答案）-2026-2027学年人教版高中英语必修第二册

Unit 2 Wildlife Protection Period 4 Discovering Useful Structures 导学案 （含答案） 2026-2027学年 人教版高中英语必修第二册 一、学习目标 1. 能准确说出现在进行时被动语态的四种结构（肯定、否定、一般疑问、特殊疑问），并知道be+being+done中being不能丢。 2. 能区分现在进行时被动语态的四种功能：此时此刻正在被做、现阶段正在被做、经常性被动（带感情色彩）、按计划将要被做。 3. 能在真实语境中主动使用现在进行时被动语态，比如描述武汉正在发生的环保和建设事件。 二、学习重难点 【重点】 重点1：掌握现在进行时被动语态的结构 be + being + done，以及四种句式变化。（对应 Step 2） 重点2：通过选择填空和改错，巩固结构，避免漏掉being或be动词用错。（对应 Step 3 Activity 1、Activity 2） 【难点】 难点1：主动句变被动句时主谓一致和时态对应，尤其是不可数名词和复数名词做主语时be动词的选择。（对应 Step 3 Activity 3、Activity 4） 难点2：在真实语境中灵活运用，而不是只会做选择题。（对应 Step 4） 三、学情分析 高一学生在初中已经学过一般现在时和一般过去时的被动语态，知道"be+过去分词"这个基本框架，所以现在进行时被动语态对他们来说不是全新的东西。但正因为有旧知识打底，学生最容易犯两个错：一是把现在进行时被动写成一般现在时被动（漏掉being，直接写is done），二是be动词的人称和数跟主语对不上。另外，学生对"现阶段正在被做"和"此时此刻正在被做"这两种功能区分不清，看到these days就条件反射用现在进行时，不去想句子到底说的是"正在做"还是"一直都这样"。写作方面，学生习惯用主动句，很少主动用被动，需要给他们真实的语境（比如身边的武汉长江大保护）让他们觉得被动句有用。 四、课堂探究 Step 1 Lead-in & Observation (5 min) Fill in each blank with the correct form of the verb in brackets. Then look at the three verbs you wrote and find the pattern they share. 1. A new nature reserve ____________ (build) near East Lake in Wuhan these days. 2. The finless porpoises in the Yangtze River ____________ (watch) by researchers right now. 3. Many old buildings along the Yangtze River ____________ (pull) down to make room for green spaces. Question: What do the three sentences have in common? Write down the verb structure you find. Step 2 Structure & Functions (10 min) [重点1] Activity 1 Complete the structure table. Form Structure Affirmative (肯定) Negative (否定) Yes / No question (一般疑问) Wh- question (特殊疑问) Activity 2 Match each sentence with its function. (1) The finless porpoise is being watched by researchers right now. (2) Many wetlands in Wuhan are being restored these days. (3) He is always being praised by his teacher for helping animals. (4) A new subway line is being built across the Yangtze River next year. A. Something is being done at this very moment. B. Something is being done during this period (not necessarily right now). C. A repeated passive action with an emotional tone (always / constantly). D. A planned future passive action. Step 3 Practice (15 min) [重点2 / 难点1] Activity 1 Choose the correct verb form. 1. Don't enter the room. The walls ____________ (paint / are being painted). 2. — Where is your brother? — He ____________ (interviews / is being interviewed) by a reporter from Wuhan TV. 3. The Yangtze finless porpoise ____________ (protects / is being protected) by the 10-year fishing ban. 4. Many trees ____________ (plant / are being planted) along the riverbank this spring. 5. The problem of water pollution ____________ (discusses / is being discussed) at the meeting now. 6. Be quiet! The final exam ____________ (held / is being held) in the next room right now. Activity 2 Find and correct the mistakes. (Each sentence has one error.) 1. The pandas are feed by the keepers at the moment. ____________ 2. A new bridge is build over the Yangtze River these days. ____________ 3. The wild birds are being protect by the volunteers in the wetland. ____________ 4. Is the meeting been held in Room 301 now? ____________ 5. Many animals is being killed for their fur. ____________ Activity 3 Fill in the blanks with the correct form of the verb in brackets (active or passive). Read the short passage about Wuhan and fill in each blank. Note: not every verb needs a passive form! Great changes ____________ (take) place in Wuhan these days. The Yangtze River ____________ (clean) by a huge project. Old factories along the river ____________ (move) away, and more green parks ____________ (build) in their place. The finless porpoise, once rarely seen, ____________ (spot) more often in the Wuhan section of the Yangtze. At the same time, some old streets ____________ (protect) as cultural heritage sites. We are happy to see that our city ____________ (become) greener and more beautiful. Activity 4 Rewrite the sentences in the present continuous passive voice. 1. The government is building a new wetland park in Wuhan. → ____________________________________________ 2. Volunteers are cleaning the riverbank this weekend. → ____________________________________________ 3. They are not cutting down the trees by the lake. → ____________________________________________ 4. Is the city improving public transport? → ____________________________________________ 5. What are people doing to save the finless porpoise? → ____________________________________________ Step 4 Production (5 min) [难点2] Work in pairs. Write 3 sentences about what is being done in Wuhan right now or these days to protect the environment. Use the present continuous passive voice. Example: More trees are being planted along the Yangtze River this spring. 1. ____________________________________________ 2. ____________________________________________ 3. ____________________________________________ 五、课后拓展 1. 写一段50—70词的短文，用现在进行时被动语态描述武汉长江大保护正在做的事（至少用3个被动句）。 2. 找一篇近期的英语新闻（BBC/China Daily均可），划出里面所有的现在进行时被动语态句子，抄下来并翻译成中文。 参考答案 Step 1 1. is being built 2. are being watched 3. are being pulled Common structure: be (am / is / are) + being + past participle (done) Step 2 Activity 1 结构表 Affirmative: am / is / are + being + done Negative: am / is / are + not + being + done Yes / No question: Am / Is / Are + 主语 + being + done? Wh- question: 疑问词 + am / is / are + 主语 + being + done? Activity 2 功能匹配 (1)—A (2)—B (3)—C (4)—D Step 3 Activity 1 选择 1. are being painted 2. is being interviewed 3. is being protected 4. are being planted 5. is being discussed 6. is being held Activity 2 改错 1. are feed → are being fed 2. is build → is being built 3. are being protect → are being protected 4. Is ... been held → Is ... being held 5. is being killed → are being killed（主语Many animals是复数） Activity 3 语篇填空 are taking; is being cleaned; are being moved; are being built; is being spotted; are being protected; is becoming 注意：第一空take place是不及物动词短语，没有被动语态，只能用主动are taking。最后一句is becoming也是主动，因为城市自己在变，不是被变。 Activity 4 改写 1. A new wetland park is being built in Wuhan (by the government). 2. The riverbank is being cleaned by volunteers this weekend. 3. The trees by the lake are not being cut down. 4. Is public transport being improved (by the city)? 5. What is being done to save the finless porpoise (by people)? Step 4 参考例句 1. The water of the Yangtze River is being cleaned up by a huge project. 2. More green parks are being built along the riverbank. 3. Old factories are being moved away from the city centre. 五、课后拓展 1. 开放写作，按是否正确使用了至少3个现在进行时被动句、内容是否扣题给分。 2. 开放任务，检查学生划出的句子是否真的是现在进行时被动语态（be+being+done）。 学科网（北京）股份有限公司 $