Unit3 grammar学案2026-2027学年沪教版八年级英语上册

U3 Our digital lives | 2026—2027学年 U3 语法探究课学案 Making fair comparisons 2026—2027学年沪教版八年级英语上册 | 建议课时40分钟 班级 __________ 姓名 __________ 日期 __________ 教材第41—42页 Comparative and superlative adjectives 本课要完成：能从例句归纳比较级与最高级的形式和用法；能改正常见错误；能在明确范围内作出有依据的比较。 一 像语言侦探一样观察 7分钟 Inquiry question: How do we compare things clearly and fairly? 1. Read these sentences from, or closely based on, the textbook. a. The first computers were bigger than cars. b. Nowadays, computers are much smaller and better. c. Computers today are much faster than before. d. I think human beings are the smartest. Underline the comparative forms once and the superlative form twice. What often follows a comparative? __________ What usually comes before a superlative? __________ d句表达说话人的看法。会使用最高级，不等于已经证明这一看法。 二 归纳词形变化 8分钟 2. Complete the forms. Then write a rule for each group in Chinese. Group Adjective Comparative Superlative A small smaller ________ B large ________ largest C big bigger ________ D easy ________ easiest E useful more useful ________ F good ________ best F bad worse ________ A ____________________ B ____________________ C ____________________ D ____________________ E ____________________ F ____________________ U3 语法探究课 学生用页 2 Making fair comparisons 三 把规则放回语境 10分钟 3. Choose or complete the rule. a. 比较两个对象，常用____________；在三者或以上范围内表示“最……”，常用____________。 b. than常跟在____________后；形容词最高级前通常用____________。 c. much可以修饰比较级，表示“……得多”。选择：much faster / very faster。 d. 最高级可以用in或of说明范围。Circle the range: the lightest of the three laptops. 4. Complete the sentences. Do not add extra words unless needed. a. My new screen is __________ (large) than my old one. b. This is __________ (useful) of the three apps for our task. c. With clearer instructions, the task becomes __________ (easy). d. The new device is much __________ (good) than the old one. e. Of the three connections, this one is __________ (bad). 5. Each sentence has ONE error. Correct it and name the rule. a. This laptop is more cheaper than that one. Correction: __________________ Rule: _________________________ b. Of the three models, A is lightest. Correction: __________________ Rule: _________________________ c. This screen is biger than mine. Correction: __________________ Rule: _________________________ d. The new computer is very faster than the old one. Correction: __________________ Rule: _________________________ Language check 比较对象应对应：The screen of A is larger than the screen of B. 不能把“屏幕”直接与“整台电脑”比较。 U3 语法探究课 学生用页 3 Making fair comparisons 四 为不同使用者作决定 12分钟 6. Use the classroom data below. These are imaginary tablets. Tablet Price Weight Screen Battery life A 1,800 yuan 0.6 kg 10 inches 8 hours B 2,400 yuan 0.5 kg 11 inches 10 hours C 3,000 yuan 0.8 kg 13 inches 12 hours a. Tablet A is __________ (cheap) than Tablet B. b. Tablet B is __________ (light) of the three. c. Tablet C has __________ (large) screen of the three. d. Tablet C has a __________ (long) battery life than Tablet A. 7. Make a recommendation. Use one comparative and one superlative. Mei can spend up to 2,500 yuan and carries the tablet every day. She wants the lightest option within her budget. I recommend Tablet _____. _____________________________________ __________________________________________________________________ __________________________________________________________________ Jun draws at one desk. He can spend up to 3,200 yuan and wants the largest screen. Would you give him the same advice? Explain. __________________________________________________________________ __________________________________________________________________ 8. A seller says, “Tablet C is the best.” What information is missing? Best for __________? Compared with __________? Based on __________? 五 离堂检验 3分钟 9. Complete: Of the three, B is the __________ (light), but A is __________ (cheap) than B. Self-check 我能变词形 □ 我能标清比较范围 □ 我能按需要作比较 □ 课后：比较家中两件物品，写两个比较级句子；再在三个同类物品中写一个最高级句子。不得只写“最好”，需说明比较标准。 U3 语法探究课 参考答案 1 Making fair comparisons 语法参考答案与点拨 1. 比较级：bigger、smaller、better、faster；最高级：smartest。than；the。 2. smallest；larger；biggest；easier；most useful；better；worst。 规则：A通常直接加-er/-est；B以不发音-e结尾，加-r/-st；C以重读闭音节结尾且末尾为一个辅音字母，双写该字母再加-er/-est；D以“辅音字母+y”结尾，变y为i再加-er/-est；E在useful等词前加more/most；F为不规则变化。 补充：常见短词多用-er/-est，多音节词通常用more/most；双音节词需结合词形和实际用法掌握，如easy—easier，而careful—more careful。最高级前有my等限定词时不用再加the，如my best friend。此项只作答疑，不额外设必做题。 3. a. 比较级；最高级。b. 比较级；the。c. much faster。d. of the three laptops。 4. a. larger；b. the most useful；c. easier；d. better；e. the worst。 5. a. 去掉more，不能重复标记比较级；b. lightest前加the；c. biger改为bigger；d. very改为much，可用much修饰比较级。 6. a. cheaper；b. the lightest；c. the largest；d. longer。 7. Mei: I recommend Tablet B. It is lighter than Tablet A and is the lightest of the three. It also costs less than 2,500 yuan. Jun: No. I recommend Tablet C. It has a larger screen than Tablet B and the largest screen of the three. It is within his budget. 8. 可填：which user；which other tablets；price, weight or screen size。核心是说明“最好”必须联系使用者、比较范围和评价标准。 9. lightest；cheaper。 第7题评价共6分：词形与句法正确2分，比较有明确范围及依据2分，推荐符合使用者需要2分。 材料说明：规则观察源于教材第41—42页；平板电脑名称及参数为课堂虚构数据。 第 页 学科网（北京）股份有限公司 $