Unit 3 Lesson 3（讲解课件）-【优翼·学练优】2025-2026学年八年级英语上册同步备课（人教版2024）

Section A How are we different from each other? Grammar Focus (3a-3c) Unit 3 Same or Different? Learning Objectives In this lesson, you will: 1. know the usage of comparatives. 2. master the change rules of comparatives. 3. use comparatives to compare two people or two things. Look and Say Who runs faster, the boy or the girl? The boy runs ______ (fast) than the girl. faster The girl runs ______ (slow) than the boy. slower Who studies harder? The boy in blue or the boy in white? The boy in white studies ______ (hard) than the boy in blue. The boy in blue is ______ (lazy). harder lazier Which desk is more organized? The desk on the left is ______________ (organized) than the desk on the right. more organized The desk on the right is _______ (messy). messier Pair Work Compare yourself with your partner. Who arrives school earlier? Whose English is better? Who is more outgoing? Who is shyer? Which subject is more challenging for you? English or maths? Think and Share Think of the examples above and discuss the questions with your partner. What do you notice about the adjectives and adverbs in the above examples? Do they change in any way? We add “er / ier” or “more” to adjectives and adverbs. What word do we use to connect two people or things being compared? We use “than”. 表示两者之间的比较要用到比较级，由“比较级+than”的句型构成，意思是“......比......较为”。 3a Read the sentences and notice the comparatives in bold. Find more examples in Section A. There are more activities this year. It is more colourful than last year. Emma is taller than Ella, but her hair is shorter than Ella’s. Ella dances better than Emma, but Emma sings louder than her. Emma always gets up earlier than me, but I work as hard as her! 1. You play the Chinese flute better than anyone else in our music club. 2. But you work harder than me. 3. I’m a little quieter than Ella. And she is funnier than me. More examples: 形容词和副词比较级的构成 （1）一般在词尾+er small—smaller   young—younger   old—older   smart—smarter   cheap—cheaper （2）以不发音的e结尾的词，在词尾+r nice—nicer   late—later   wide—wider   large—larger （3）以辅音字母+y结尾的词，变y为i，再+er heavy—heavier   busy—busier   easy—easier   dry—drier （4）重读闭音节，且末尾只有一个辅音字母的词， 双写该辅音字母，再+er big—bigger   hot—hotter   thin—thinner   fat—fatter （5）部分双音节和多音节词，在原级前+more构成比较级 slowly—more slowly   beautiful—more beautiful   important—more important famous—more famous （6）不规则变化 good/well—better   bad/badly—worse   many/much—more   little—less   far—further/farther 形容词和副词比较级的用法 （1）表示A比B更......：A+verb+比较级+than+B My room is smaller than yours. He works harder than before. 当than前后使用的动词相同时，通常用助动词代替后面的动词。该助动词也可以省略。 You know more about yourself than I (do). She runs faster than he (does). （2）表示A和B哪个更......：Who/Which+verb+比较级， A or B? Who runs faster, Lucy or Amy? Which is bigger, this one or that one? （3）表示越来越......：比较级+and+比较级或more and more+原级（多音节和部分双音节词） The weather is getting warmer and warmer. The city is becoming more and more beautiful. （4）表示越......就越......：the+比较级，the+比较级 The more difficult the problem is, the more careful we should be. The more you read, the better you do. （5）表示两者中比较......的一个：the+比较级+of the two He is the thinner of the two. This is the more interesting of the two books. （6）在比较级前有时可加一些修饰语，如much, a lot, a little, still, even等表示强调或加强语气 The book is much more interesting than the one I read last week. She is a little taller than her sister, but her sister is even more outgoing. “as+形容词或副词原形+as”句型 （1）表示两者在某一方面相同时，用“as+形容词或副词 原形+as”的句型 I think science is as important as maths. Tom runs as fast as Jack. （2）表示一方在某一面不及另一方时，用“not as/so+ 形容词或副词原形+as”的句型。 It is not as / so warm today as yesterday. He did not come as / so early as Wang Lin. 3b Use the words in brackets to write questions and answers. 1. Q：Is Julie slimmer than you? (Julie / slim / you) A: No, she isn’t. She is as slim as me. 2. Q：________________________________? (you / serious / your cousin) A: No, I’m not. I am __________ than he is. Are you more serious than your cousin less serious 3. Q: _____________________? (Tom / smart / Sam) A: No, I don’t think so. I think Sam is as ______ as Tom. 4. Q: ___________________________? (Jack / swim / fast / Sally) A: No, he doesn’t. He swims as ______ as Sally. Is Tom smarter than Sam smart Does Jack swim faster than Sally fast 3c Look at the chart. Then complete the sentences to compare Guangzhou and Vancouver. Use the words in the box and than. Facts 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℃ 5℃ Average July temperature 31℃ 18℃ 面积 年均降 水量 温哥华 large small much warm cool 1. The population of Vancouver was ________________ that of Guangzhou in 2024. 2. In area, Guangzhou is ________________ Vancouver. 3. It rains ______ in Guangzhou _______ in Vancouver. 4. Guangzhou has a pleasant temperature in January. It is __________________ Vancouver in January. 5. Vancouver is _______________ Guangzhou in July. (much) smaller than (much) larger than more (much) warmer than (much) cooler than than Practice More Make more comparisons using the information in the chart. E.g. Vancouver rains less than Guangzhou every year. Pair Work Compare Guangzhou with your hometown. Facts Guangzhou Your hometown Average January temperature 16℃ Average July temperature 31℃ Transport subway, bus,bicycle Rain a lot of rain $