Unit 5 课时3 Understanding ideas（Grammar）（课件）英语新教材外研版七年级下册

Amazing nature Unit 5 Understanding ideas (Grammar) 初中英语 / 外研版 / 七年级下册 能通过观察教材中比较级和最高级的例句，识别其结构特征，理解其表达"比较"的语法功能；能小组合作归纳形容词比较级和最高级的构成规则与基本句式。（学习理解） 01 能在语篇中识别比较级和最高级句子，准确完成填空、改写等控制性练习；能口头谈论自己心中最美的自然之地，正确使用比较级和最高级表达观点。（应用实践） 02 能运用比较级和最高级，结合本单元"神奇的自然"主题，完成一篇简短描绘自然美景的口头或书面报告，语法准确、逻辑连贯，并自然融入对自然的赞美与情感表达。（迁移创新） 03 学习目标 Contents Lead in 01 Presentaion 02 Production 03 Summary 04 Language points 05 06 Exercises 07 Homework 08 3 Lead in 01 4 Enjoy the song, pay attention to the following words. small - smaller - the smallest; big - bigger - the biggest; slow - slower - the slowest; fast - faster - the fastest 5 Look and say What do you think of them? Can you describe them? Today, we'll learn how to use adjectives to compare these amazing places and describe the most wonderful things in nature. 比较级和最高级 Presentaion 02 8 Look at the example sentences and answer. (a) It is famous for the world's highest mountain. (b) But this area is also full of the most amazing colours in nature. (c) The plateau is quieter than the big cities. What do these sentences compare? Which words show the comparison? high的最高级 amazing的最高级 quiet的比较级 对两者进行比较时，可以用形容词的比较级形式来表达。 比较三个或三个以上的事物，可以用形容词的最高级形式来表达。 (a) It is famous for the world's highest mountain. (b) But this area is also full of the most amazing colours in nature. (c) The plateau is quieter than the big cities. 主语 + be + the + 形容词最高级 + 名词 主语 + be + the most + 形容词最高级 + 名词 + 比较范围（in） 主语 + be + 形容词比较级 + than + 其他 Sentence structure comparatives and superlatives 比较级和最高级 high higher highest amazing more amazing most amazing quiet quieter quietest Rules? Group discussion (1) 比较级的含义和结构 (2) 最高级的含义和结构 (3) 形容词和副词比较级、最高级变化规则 (4) 拓展：比较级形式表最高级意义 (1) 比较级的含义和结构 比较级：用于两者之间的人或事物的比较，意为“更......”。 Summarize the grammar rules Summarize the grammar rules 结构 含义 示例 比较级+than ......（一方）比（另一方）...... Alan is taller than Nick. 比较级+and+比较级    越来越   The environment is getting better and better. more and more /less and less+原级 My home town is becoming more and more modern. the + 比较级，the + 比较级 越……，就越…… The more you exercise, the healthier you will be. Summarize the grammar rules 结构 含义 示例 the + 比较级 + of the two 两者中较……的那一个 Mike is the taller of the two. Which / Who + 动词 + 比较级，A or B? 哪个/谁更……，A 还是 B？ Who runs faster, Mary or Lucy? 比较级（单独使用） 更…… You should tell me earlier. Have a try 【小试身手】 — Which kind of movies do you prefer, action movies or comedies? — I like action movies ______. A. well B. better C. the better D. the best B (2) 最高级的含义和结构 最高级：用于三者或三者以上的人或事物的比较，意为“最……”。 Summarize the grammar rules 结构 含义 示例 the + 最高级（+名词）+ 比较范围（in / of / among 等） 最…… Blue whales are the largest animals on the earth.  one of + the + 形容词最高级 + 可数名词复数 + 比较范围（in / of / among 等）    最……中之一 Skiing is one of the most dangerous sports in the world. Which / Who + 动词（+ the）+ 最高级，A, B or C? 哪个/谁最……，A、B还是C？ Who runs the fastest, Tom, Jack or Bill? Summarize the grammar rules Have a try 【小试身手】 Today Bao Zheng is still considered as one of the ____________(great) officials in history and is loved by Chinese people. greatest (3) 形容词和副词比较级、最高级变化规则 Summarize the grammar rules 情况 构成方式 原级 比较级 最高级 一般情况 加-er 或-est new 以 e 结尾的词 加-r 或-st fine 以“辅音+y”结尾的词 变 y 为 i 再加-er 或-est early 重读闭音节的词末尾只有一个辅音字母 先双写辅音字母，再加-er 或-est hot thin newer newest finer finest earlier earliest hotter thinner hottest thinnest (3) 形容词和副词比较级、最高级变化规则 Summarize the grammar rules 情况 构成方式 原级 比较级 最高级 多音节词及部分双音节词 词前加 more ，the most expensive 特殊变形 常用修饰比较级的词： much, even, far，a little, a bit, a lot more expensive the most expensive 好：good - better - best 坏：bad/ill - worse - worst 多：many/much - more - most 少：little - less - least 远：far - farther/further - farthest/furthest Practice 03 21 Now find more sentences with these structures in the reading passage. 22 Now find more sentences with these structures in the reading passage. 23 原级 比较级 最高级 1) quiet → quieter → quietest 2) few → fewer → fewest 3) good/well → better → best （特殊变化） 4) high → higher → highest 5) amazing → more amazing → most amazing 6) beautiful → more beautiful → most beautiful Now write these words. 24 Read and complete. shorter higher highest Which fact interests you the most? 25 Read and complete. Complete the facts about the natural wonder. shorter most famous slow faster high highest Work in pairs Work in pairs: Talk about the most beautiful natural place in your opinion. Use the words and expressions from the reading passage and the Useful expressions to help you. A: Hello. What’s the most beautiful natural place in your opinion? B: The most beautiful natural place in my opinion is… A: Where is it? B: It’s in... A: What is it famous for? B: It’s famous for... A: What is it like? B: It is like… A: Why do you like it? B: I like it because... Example Work in pairs Production 04 Write a short passage about “The most beautiful natural place”. Try to use comparatives and superlatives. Writing What is its name? Where is it? What is it like? Why do you like it? It is famous for... This area is full of... in nature It is like.. Words can't express my love for... It is one of the...in the world. Useful expressions The writing framework: Example The Most Beautiful Natural Place The most beautiful natural place in my heart is Jiuzhaigou Valley. It is in Sichuan Province, in the southwest of China. Jiuzhaigou is famous for its colourful lakes and amazing waterfalls. This area is full of the most beautiful colours in nature. The water there is much clearer than the water in other places. The mountains are higher than those near my hometown. In autumn, it is like a fairyland. I like it because it is quieter than the big cities. Words can't express my love for it. I think it is one of the most wonderful places in the world. Summary 05 32 1. 因……而著名 be famous for 2. ……之一 one of the... 3. 快得多 much faster 4. 两米高 two metres high 5. 最高的潮汐 the highest tides Key phrases 形容词和副词 比较级 用于两者之间的人或事物的比较 最高级 用于三者或三者以上的人或事物的比较 变化规则 规则变化和特殊变化 比较级+than 等 形容词、副词的比较级和最高级 the+最高级（+名词）+比较范围（in/ of/ among 等）等 34 Language points 06 35 1. The Yellow River is shorter than the Yangtze River. 黄河比长江短。 结构：A + be + 形容词比较级 + than + B A 是被比较的第一个对象（The Yellow River） be 动词根据主语变化（is） 形容词比较级（shorter） than 引出比较的第二个对象（the Yangtze River） 形容词比较级的构成规则： short 是单音节形容词，在词尾直接加 -er 构成比较级 shorter。 类似单词：long → longer, high → higher, fast → faster 36 【小试身手】 Tom is __________(tall) than Jack. 汤姆比杰克高。 This river is __________(long) than that one. 这条河比那条河长。 taller longer 【易错提醒】 比较级后面必须用 than than 前后的比较对象要一致 37 2. Many tides are two metres high. 很多潮汐有两米高。 结构：主语 + be + 数字 + 度量单位 + 形容词（表示长、宽、高、深等） 主语：Many tides be 动词：are 数字 + 度量单位：two metres 形容词：high 38 【常用表达】 数字 + metres + high/tall 表示高度 数字 + metres + long 表示长度 数字 + metres + wide 表示宽度 数字 + metres + deep 表示深度 【例句拓展】 The wall is three metres high. 这堵墙有三米高。 The bridge is 100 metres long. 这座桥有100米长。 The river is 50 metres wide. 这条河有50米宽。 39 Exercises 06 40 一、单项选择 1. The Yangtze River is ______ than the Yellow River. A. long B. longer C. longest D. the longest 2. Mount Qomolangma is the ______ mountain in the world. A. highest B. high C. higher D. most high 3. Who runs the ______, Tom, Jack or Bill? A. fast B. faster C. fastest D. most fast 4. This lake is one of the ______ lakes in China. A. beautiful B. more beautiful C. beautifulest D. most beautiful 5. Tom is ______ than my son. A. tall B. taller C. tallest D. the tallest B A C D B 41 6. Mike is ______ of the two boys. A. tall B. the tallest C. the taller D. taller 7. The more you exercise, the ______ you will be. A. healthy B. healthier C. healthiest D. more healthy 8. Of the three girls, Lily dances ______. A. beautifully B. more beautifully C. the most beautifully D. most beautiful 9. This watch is much ______ than that one. A. cheap B. cheaper C. cheapest D. the cheapest 10. I am the ______ in my family. A. youngest B. younger C. young D. most young C B C B A 二、完成句子 1. 中国因长城而著名。 China ________ ________ ________ the Great Wall. 2. 她是世界上最好的老师之一。 She is ________ ________ ________ ________ teachers in the world. 3. 火车比自行车快得多。 The train is ________ ________ than the bike. 4. 这棵树有三米高。 This tree is three ________ ________. 5. 最高的潮汐可达十米高。 ________ ________ ________ can be ten metres high. is famous for one of the best much faster The highest tides metres high 43 Homework 08 44 1. 基础作业：完成练习册中形容词比较级和最高级的相关习题。 2. 进阶作业：写一篇50词左右的短文"An Amazing Place I Know"，至少使用3个比较级和最高级的句子。 3. 拓展作业：搜索一个世界自然奇观的资料，用3句话比较或描述它，下节课分享。 45 Thank you！ 更多精品素材：http://shop248912786.taobao.com/index.htm （下拉可隐藏） 46 $Miler smaller, smaller, smaller aller smaller, small, small, small, we are small fish. Fish small, smaller, smaller, big, bigger. Big, bigger, this is big, big, big. We are big . dinos d biggest, the . biggest, smaller, smaller, smaller, smaller, smaller, bigger, biggest, big, bigger. So, so service slow, slower, slower, slow. We are so nail slow now, slower through the slow is small, slow, lower, slower, fast, father passes, but we are . best nice. Slow, slower, so best goer passes fast, faster, fastest.