Unit 3 The Internet Discovering Useful Structures 教案-2026-2027学年高中英语人教版必修第二册

Period 4　Discovering Useful Structures　教案 现在完成时被动语态（Present Perfect Passive Voice） 人教版（2019）必修第二册 Unit 3 The Internet　|　Period 4　|　1 课时（45 分钟）　|　情境主线：变化中的武汉（Changes in Wuhan） 一、教材分析 本课是人教版（2019）必修第二册 Unit 3 The Internet Period 4 的语法课，内容为现在完成时被动语态。学生在前面阅读课文里已经见过这个结构，但没有系统归纳过。整节课用“变化中的武汉”串起来，按学生观察、自己归纳、笔头操练、语篇填空、口头产出的顺序推进，让学生在自己熟悉的话题里把这个语法用起来。 二、教学目标 1. 通过观察成对例句，归纳现在完成时被动语态的构成 have / has + been + done。 2. 能说出被动语态的使用场景：不知道或不必说出动作的执行者、强调动作的承受者。 3. 能在“武汉变化”这一话题中正确使用现在完成时被动语态，并完成一段小语段写作。 三、教学重难点 重点：现在完成时被动语态的构成（have / has been + done）及其基本用法。 难点：have / has 与主语保持一致；被动结构中 been 不遗漏；主动句转换为被动句时，主语与动词形式的调整。 四、教学过程 Step 1　Observation and Discovery（约 12 分钟） Teacher: Put the three pairs on the screen. Ask two students to read them aloud, then ask the class, “What’s different about the verbs in each pair?” Students: Read the sentences, underline the verb forms, and discuss with a partner. 1. People have built a new greenway around the East Lake. 　　A new greenway has been built around the East Lake. 2. Workers have repaired the Yellow Crane Tower recently. 　　The Yellow Crane Tower has been repaired recently. 3. People have planted thousands of cherry trees along East Lake. 　　Thousands of cherry trees have been planted along East Lake. Teacher: Put up the table on the screen and go through the forms and examples with the class. Students: Read the table, take notes of the structure, and read the examples aloud. Sentence type Form Example Affirmative have / has + been + done The East Lake Greenway has been opened to the public. Negative haven't / hasn't + been + done The old bridge hasn’t been repaired yet. Yes/No question Have / Has + subject + been + done? Has the new museum been rebuilt? Wh- question What / How many + have / has + subject + been + done? What has been changed in Wuhan? / How many cherry trees have been planted? 【设计说明】学生对东湖绿道、黄鹤楼、樱花这些场景有真实印象，例句不用解释就能懂。先让他们自己划动词、自己找规律，比直接讲结构印象深；表格把发现的规则落到纸上，方便后面对照。 Step 2　Practice（约 12 分钟） Teacher: Show the example and do the first transformation on the board. Remind the class: watch the subject (have or has) and never drop “been”. Students: Do the five sentences individually, then swap books and check in pairs. Example:　People have built three new subway lines in Wuhan. 　　　　　→ Three new subway lines have been built in Wuhan. 1. Workers have repaired the Yellow Crane Tower recently. 2. The city has planted about 500,000 trees along the Yangtze River. 3. People have turned the old factory into a creative park. 4. The government has opened a new riverside park this spring. 5. People have written many stories about the changes in Wuhan. Teacher: Put up sentences A and B. Ask, “Which one would you use? Why?” Students: Talk in groups of four; two groups report back. A. Workers have built a new library near our school. B. A new library has been built near our school. 【设计说明】五道题把结构练熟，特意提醒 have / has 和 been——这正是难点里学生最常错的两点。A / B 两句对比让他们体会：不知道动作是谁做的、或者没必要说时，才轮到被动出场。 Step 3　Language Use（约 10 分钟） Teacher: Ask students to read the whole passage once before writing anything. Remind them to check the subject of each blank. Students: Read, then fill in the blanks. Compare answers and say why each verb has that form. Changes in Wuhan Wuhan is changing fast. In the past ten years, many old buildings 　　　　 (rebuild) along the Yangtze River. The Yellow Crane Tower 　　　　 (repair) already. A new riverside park 　　　　 (open) to the public since last spring. Thousands of cherry trees 　　　　 (plant) along East Lake, and since then thousands of visitors 　　　　 (attract) to Wuhan. More subway lines 　　　　 (add) in the past three years. Many people say the city 　　　　 (turn) into a more beautiful place. 【设计说明】短文里主语单复数混着出现（buildings、the Tower、visitors、the city），学生没法靠死记 have / has，只能看主语判断；正好把主谓一致这个难点暴露出来。 Step 4　Production: Write a “Wuhan Calling Card”（约 8 分钟） Teacher: Read the example poem once. Make the task clear: 4-6 sentences, at least 3 passive verbs. Students: Write for five minutes, then read their work in groups and tick the checklist. Example: Look at the way the riverbank has been rebuilt, Look at the way the cherry trees have been planted, Look at the way the old factory has been changed, Look at the way Wuhan has been renewed. Checklist: [ ] I have used at least 3 present perfect passive verbs [ ] have / has agrees with the subject [ ] I have not missed “been” [ ] My writing is about changes in Wuhan or my hometown 【设计说明】写自己熟悉的城市，学生有话可说。写完对照清单自查 have / has 和 been，老师下课前收两三份共性问题，下节课开头点评。 五、家庭作业 1. 必做：用现在完成时被动语态写 5 个句子，描述身边（学校、家或武汉）近十年的变化。 2. 选做：以 Changes in My Hometown 为题写一段 60 词左右的英语小短文，至少使用 3 个目标结构。 六、板书设计 Period 4　Present Perfect Passive Voice Form:　have / has + been + done 　　　Affirmative:　The East Lake Greenway has been opened. 　　　Negative:　　 The old bridge hasn’t been repaired. 　　　Question:　　Has the new museum been rebuilt? Use:　doer unknown / unimportant; focus on the receiver Topic: Changes in Wuhan — greenway, Yellow Crane Tower, cherry trees, subway 七、教学反思 本节课用学生熟悉的武汉变化串场，例句贴近生活，观察环节参与度比较高，结构基本是学生自己归纳出来的，不是老师灌的。 课堂上暴露的问题：一是 Step 2 第 2 题 about 500,000 trees 作主语时，有三四个学生写成 has；二是口头操练里 been 被漏掉了两三次；三是 Step 3 出现了 every spring，有学生直接写 are attracted，把一般现在时和现在完成时被动混了。 改进：下节课开头用三分钟把这几处典型错误快速过一遍；板书右侧加一条提醒栏（have / has 看主语、been 不能丢）；课后抽查 5 至 8 名中等生的写作段落，下节课点评。 八、参考答案 Reference Answers Part Ⅰ Activity 1：被动句 = have / has + been + done，动作的承受者作句子主语。 Activity 2：按空格顺序（表格行内从左到右、逐行往下）依次为 been；done；been；been；Have；Has；have / has；has。 Part Ⅱ Activity 1： 1. The Yellow Crane Tower has been repaired recently. 2. About 500,000 trees have been planted along the Yangtze River. 3. The old factory has been turned into a creative park. 4. A new riverside park has been opened this spring. 5. Many stories about the changes in Wuhan have been written. Activity 2：B 更自然。谈话的焦点是“图书馆已建成”这件事（承受者），执行者是谁无关紧要；当不知道、不必说出或不强调执行者时，用被动语态。 Part Ⅲ have been rebuilt；has been repaired；has been opened；have been planted；have been attracted；have been added；has been turned。 说明：本空用 have been attracted，与上文现在完成时语境一致，强调东湖樱花种植以来已吸引大量游客；since then 明确指向“从那时到现在”，与现在完成时被动自然搭配。 Part Ⅳ 开放性任务：能正确使用 3 个及以上现在完成时被动语态、内容扣题即可。 学科网（北京）股份有限公司 $