Unit 8 Making a Difference 第三课时 Section A Grammar Focus(4a–4d) 教学设计 2025-2026学年人教版英语八年级下册

Unit 8 Making a Difference Third Period Section A Grammar Focus(4a-4c) Topic Unit 8 Making a Difference Third Period Section A Grammar Focus(4a-4c) Teaching Content Students will be able to correctly use the present perfect tense with "for" and "since" in sentences. Lesson Type：Lecture Lesson Period：1 Total Periods Teaching Material Analysis：This lesson is a grammar-focused class, focusing on Grammar Focus and 4a-4c exercises. It sorts out and consolidates the key sentence patterns and grammar about "making a difference" learned in the previous two periods, takes targeted practice as the core, guides students to master and apply the target grammar flexibly, strengthens language accuracy, and lays a foundation for subsequent comprehensive language output. Student Learning Situation Analysis：Based on the first two periods, students have mastered vocabulary and basic sentences related to making a difference, but lack systematic grammar induction. They often make mistakes in flexible application, needing targeted guidance and intensive practice to improve grammar application ability. Core Literacy (Teaching) Objectives： 1. Language Ability: Master the core grammar structures in Grammar Focus, finish 4a-4c exercises proficiently, and use the target grammar to express views on making a difference and helping others correctly. 2. Thinking Quality: Sort out grammar logic through induction and practice, and improve the ability of analyzing and applying grammar. 3. Cultural Awareness: Form the habit of standard English expression, combine grammar learning with the theme of making a difference, and deepen the awareness of contributing to society. 4. Learning Ability: Master basic grammar learning methods and develop the habit of active induction and independent practice. Key Teaching Points：Master the core grammar structures in Grammar Focus, finish 4a-4c practice tasks, and use the target grammar to make simple expressions about making a difference. Difficult Teaching Points：Flexibly apply the target grammar in specific contexts related to helping others and making contributions, and avoid common grammar mistakes. Teaching and Learning Methods：Teaching Methods: Grammar Explanation Method, Task-based Teaching Method; Learning Methods: Practice Method, Independent Induction Method. Teaching Preparation:Multimedia courseware, grammar explanation materials, 4a-4c practice sheets and theme-related example sentence cards. Preview the pre-class preparation section of this period in Learning Method Vision Teaching Process Design Revision Step 1 Lead-in Show some pictures related to volunteer activities, such as volunteers helping others, and ask students to describe the pictures using the present perfect tense they have learnt before. Then lead into the topic of this lesson: the use of“for” and“since” in the present perfect tense. Step 2 Work on 4a 1. Ask students to read the sentences in 4a carefully and mark the words“for” and“since”. 2. Guide students to figure out the different uses of“for” and“since”. “For” is used to indicate a period of time, and“since” is used to indicate a starting point in time. Step 3 Work on 4b 1. Practise & Check: Students complete exercise 4b individually.Students check answers with a partner. 2. Consolidate: Review answers as a class, clarifying the use of“for”and“since”. Step 4 Work on 4c 1. Pre-reading: Discuss:“What volunteer experiences are described?When did they happen?” 2. Read & Complete: Students read and fill in the blanks with the correct verb forms. 3. Review & Feedback: Check answers as a class and analyze the reasons for tense choices. Step 5 Work on 4d 1. Divide students into groups. Ask them to interview their groupmates using the questions in 4d. 2. Have students share their answers with the class. Encourage them to use the present perfect tense with“for” and“since” in their answers. Step 6 Summary Summarize the key points of this lesson, especially the different uses of“for” and“since” in the present perfect tense and the formation of the present perfect tense. Step 7 Homework Ask students to write a short passage about their own experiences using the present perfect tense with“for” and“since”. 【Class Exercises】 根据汉语意思完成句子，每空一词 1.我已经学英语三年了。 I have studied English for three years. 2.我父母从2010 年起就在那家工厂工作。 My parents have worked in that factory since 2010. 3.这只猫在沙发上睡了三个小时了。 The cat has slept on the sofa for three hours. 4.他们已经打了一个小时篮球了。 They have played basketball for an hour. 5.我们从小学就互相认识了。 We have known each other since primary school. 【Blackboard Design】 Unit 8 Making a Difference 第三课时 Section A Grammar Focus(4a–4d) 单词和短语: army, primary, help out, charity, warmly 句型:1.—— Have you been to our animal shelter before? —— No, I haven't. But one of my friends has volunteered here for a long time. 2.—— Has she ever done volunteer work? —— Yes, she has. She has been a volunteer at a nursing home since last August. 3.—— How long have you been a volunteer? ——I have been a volunteer here for a few months. 4.—— How long has he worked as a volunteer at the museum? —— He has volunteered here since his summer holidays started. 【Homework Assignment】 Finish the corresponding after-class exercises of this period. Students complete the exercises of this period in Learning Method Vision and are required to finish them earnestly to consolidate the learned knowledge. Teaching Reflection 学科网（北京）股份有限公司 $