Unit3 SectionA 3a-3c语境语法探究学案2026-2027学年人教版八年级英语上册

Unit 3 Same or Different? 语境语法探究学案 Grammar in context Unit 3 Section A Grammar Focus 3a–3c 语境语法探究学案 Grammar in context 2026–2027学年人教版八年级英语上册 Name __________________ Class __________ Date __________ Textbook: pp. 25 | Time: 45 minutes 学习目标 Learning goals I can discover comparison patterns, choose the correct form, and check whether two comparable things are being compared. Focus: Compare the same aspect; keep the base form between as … as. 核心问题 Inquiry question What makes a comparison clear and fair? G1 拆开一个比较句 Take a comparison apart 8 min Read Grammar Focus on p. 25. Begin with these examples. Underline the people or things compared, circle the comparison words, and note the aspect, such as height or dancing. 1. Emma is taller than Ella, but her hair is shorter than Ella’s. 2. Ella dances better than Emma, but Emma sings louder than her. 3. Emma always gets up earlier than me, but I work as hard as her! 例句 Example 比较什么 Aspect 形式与意思 Form and meaning Emma is taller than Ella. height Different: be + comparative + than Ella dances better than Emma.     I work as hard as her.     What changes when a sentence compares an action rather than a description?   G2 归纳暂定规则 Make a first rule 7 min Sort tall, late, slim, funny, early, colourful, outgoing, well, much, hard by the change they need. Write each comparative. Group words that change in the same way. Keep a separate group for a word that does not fit your first rule.     语境语法探究学案 Grammar in context 让规则经得起检验 Test your rule G3 规则卡与追问 Refine the rule 8 min Check your groups with Grammar Focus and a partner. Complete the cards in your own words. Include an example. 规则卡 Rule card 我的规则与例子 My rule and example Short forms: tall / late / slim   Consonant + y   Longer words: colourful / outgoing   Irregular forms: well / much   Equal comparison: as … as   Try 3b in the textbook. Compare a question beginning with Is and one beginning with Does. What follows each? Why does an equal comparison not use the comparative form?     G4 给句子做诊断 Repair and explain 7 min Improve the learner’s notes. Explain one repair to a partner. Do not just say “It sounds wrong.” a. Emma is more taller than Ella. b. I work as harder as my sister. c. Emma’s hair is shorter than Ella. d. Does Tom more outgoing than Sam?         Challenge: Can than me and than I am both follow “She is taller”? What does the second version make explicit? 语境语法探究学案 Grammar in context 用数据作出有依据的选择 Decide with data G5 城市比较有边界 Read the data carefully 10 min Use this textbook chart. Population figures refer to 2024; temperature and rainfall figures are averages. Complete 3c, then answer the travellers. 指标 Fact 广州 Guangzhou 温哥华 Vancouver Population (2024) 18.978 million 0.76 million Area 7,436 square km 115 square km Average rainfall per year 1,923 mm 1,475 mm Average January temperature 16°C 5°C Average July temperature 31°C 18°C Alex wants a warmer January. Jamie wants a cooler July. Recommend a city to each, using an average as evidence. An average is not a promise about the weather on one day.     Can the chart tell us which city has a rainier January? What extra information would you need?     G6 带走一条规则 Exit transfer 5 min Write a new comparison about two familiar objects and an equal comparison. Make the aspect clear. Ask a partner to check the word form and whether you compared like with like.       The grammar check I most need is …   语境语法参考答案 Grammar in context answers G1–G4 句子中的关系 Meaning and form G1 The first example compares height and hair length. Ella’s means Ella’s hair. The second compares dancing and singing. The third compares getting-up time and effort. In “Ella dances better”, better describes how she dances. In “I work as hard as her”, the base form hard expresses equal effort in the as … as pattern. A description often uses be + an adjective: Emma is taller. An action uses a meaningful verb: Ella dances better. A comparative adjective and adverb can look similar, but their jobs differ. 由例子归纳规则 Word forms and rules G2–G3 归纳类别 Pattern 本课例子 Examples Add -er tall → taller; hard → harder End in silent e: add -r late → later Double the final consonant here slim → slimmer Consonant + y: change y to i and add -er funny → funnier; early → earlier Use more with these longer adjectives colourful → more colourful; outgoing → more outgoing Irregular forms well → better; much → more Equal comparison as + base adjective / adverb + as: as slim as; as fast as Do not infer that every short or two-syllable word behaves identically. Slim doubles its final consonant after a short stressed vowel. These examples give the patterns needed here. Textbook 3b: 1 “Is Julie slimmer than you?” “No, she isn’t. She is as slim as me.” 2 “Are you more serious than your cousin?” “No, I’m not. I am less serious than he is.” 3 “Is Tom smarter than Sam?” “No, I don’t think so. I think Sam is as smart as Tom.” 4 “Does Jack swim faster than Sally?” “No, he doesn’t. He swims as fast as Sally.” Is begins a be + description question; Does needs a base-form verb such as swim. Equality uses the base form between as and as. 修订与解释 Repair and explain G4 a. Emma is taller than Ella. Do not combine more and taller. b. I work as hard as my sister. Use the base form. c. Emma’s hair is shorter than Ella’s. Compare hair with hair. d. Is Tom more outgoing than Sam? Use be with the adjective. “She is taller than me” and “She is taller than I am” are both standard. The second makes the comparison clause explicit. Do not reject the first just for using me. 语法迁移参考答案 Grammar transfer answers G5–G6 用数据支持建议 Use data to support a recommendation G5 Textbook 3c, in order: smaller than; larger than; more … than; warmer than; cooler than. 比较内容 Aspect 数据支持 What the data show Population Vancouver’s 2024 population was smaller: 0.76 million compared with 18.978 million. Area Guangzhou is larger in area: 7,436 square km compared with 115 square km. Annual rainfall Guangzhou has more rain per year on average: 1,923 mm compared with 1,475 mm. Alex: “I suggest Guangzhou for a warmer January. Its average January temperature is 16°C, while Vancouver’s is 5°C.” Jamie: “I suggest Vancouver for a cooler July. Its average July temperature is 18°C, compared with 31°C in Guangzhou.” These answers fit the stated temperature preferences. They do not guarantee a particular day’s weather or establish a better city overall. A different recommendation needs an explicitly added preference and must still interpret the data correctly. The chart cannot tell us which city has a rainier January. A larger annual total does not show how rain is spread through the year. We need comparable January rainfall figures, preferably averages for the same period. 在新情境中检查比较 Transfer the rule G6 A teacher-made example: two bags weigh 400 g and 600 g and both cost 80 yuan. “The first bag is lighter than the second. It is as expensive as the second.” Each aspect matches its evidence. Other familiar objects are fine; learners need not invent exact measurements. A useful check: identify both things; name one aspect; choose the adjective or adverb; check its form; read for meaning. “Guangzhou’s population is larger than that of Vancouver” also compares like with like. 教学追问 Prompts for further thinking For “Guangzhou is better”, ask “Better for whom and in what way?” For a correct word form but mismatched objects, ask students to name what appears on each side of than. Keep the discussion on what the evidence can support. 第 页 学科网（北京）股份有限公司 $