Unit 5 Amazing nature Understanding ideas—Grammar（课件）2025-2026学年外研版七年级英语下册

Unit 5 Amazing nature grammar 初中英语外研版版（2024）七年级下册 学习目标 通过本节课的学习，同学们将能: 重点：1. 了解中国自然奇观的地理知识及对应的英文 表达。 2. 掌握形容词、副词的比较级和最高级的表达 形式并在具体情境中进行运用。 难点：运用本课的语法点描述祖国的壮丽自然风光， 增强对祖国的了解与热爱，提升民族自豪感。 Watch a video Look and say The apple is big. The apple is bigger. London is old. Beijing is older than London. Liu Xiang is tall. Yao Ming is taller than him. 1. The apple is big. The apple is bigger. 2. London is old. Beijing is older than London. 3. Liu Xiang is tall. Yao Ming is taller than him. 形容词比较级 从以上例句可以看出，在对两者进行比较时，形容词要用比较级的形式，形容词比较级之后要用than引出比较的对象。 比较级 language practice 比较级就是将二者进行比较产生的词形，是由形容词或副词原级转化而来。 形容词、副词的比较级在形式上有一定的变化规律，大体上分为规则变化和不规则变化两种。 ★形容词的规则变化 1. 单音节和少数双音节单词比较级的构成 2. 大部分双音节和多音节单词的比较级的构成 形容词和副词的比较级 1. 单音节和少数双音节单词比较级的构成 构成方法 原级 比较级 单音节和少数双音节单词 一般在词尾加 -er tall, long, short, small taller, longer, shorter, smaller 以字母e结尾的形容词直接加-r nice, fine, large nicer, finer, larger 以重读闭音节结尾的形容词，如末尾只有一个辅音字母，应先双写该字母，再加-er big, hot, thin bigger, hotter, thinner 以“辅音字母 +y”结尾的形容词，先把y变成i，再加-er busy, easy, early busier, easier, earlier 2. 大部分双音节和多音节单词的比较级的构成 一般这类形容词的比较级是在其前加more。 例如：Try to make the story more moving. 请使这个故事更加感人。 Nothing is more enjoyable than playing tennis. 没有什么比打网球更令人愉快的了。 It is more difficult to practise in winter (than in summer). 冬季训练(要比夏季训练)难度更大。 ★副词比较级的规则变化 副词比较级和形容词比较级的变化形式大致相同。 构成方法 原级 比较级 单音节和少数双音节单词 一般在词尾加 -er hard, fast harder, faster 以字母e结尾的副词直接加-r late later 以“辅音字母 +y”结尾的副词，先把y变成i，再加-er early earlier 大部分多音节和双音节单词 在单词前加 more quickly, strongly, carefully more quickly, more strongly, more carefully ★形容词、副词比较级的不规则变化 原级 比较级 good, well better bad/ill, badly worse many/much more little less far farther/further old older/elder 1. fast _______ 2. hot _______ 3. lazy _______ 4. young ________ 5. fine _______ 6. early _______ 7. good _______ 8. ill ________ 9. many_______ 10. fat _______ 11. little ______ 12. busy _______ 13. quickly ____________ 14. useful ___________ 15. famous ____________ 16.bad ________ 17. wet _______ 18. few _______ 请写出下列形容词、副词的比较级 faster hotter more useful fatter less more famous more quickly more busier worse wetter fewer lazier younger finer earlier better worse ★1. 有明确两者 Who is more handsome, Guanguan or Beiye ? ★2. 含有than，表示“比” Guanguan is more handsome than Beiye. ★3. 既没有明确两者也没有than I feel better now. 原则——比较级 二者进行比较 易错点 比较级的使用原则和基本用法 请用括号内所给词的适当级别填空 (1) Which is ________(big) , the earth or the sun? (2) The bridge is much ________(long) and _______(old) than that one. (3) Jim is _________(short) than Li Lei. (4) An elephant is _________(heavy) and __________(strong) than a sheep. (5) She’s _______(tall) than me, so her trousers are ________(long). (6) Hong Kong is a ________(busy) city than Tianjin. (7) Why don’t you come a little _________(early)? (8) This year we are training _________________(careful) than last year. bigger longer older more carefully shorter heavier stronger taller busier earlier longer (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. language practice 观察以上句子，有什么特点？ 比较级 最高级 最高级 形容词、副词的最高级 形容词和副词的最高级就是将三者及以上进行比较产生的词形，是由形容词或副词原级转化而来。 形容词和副词的最高级变化分为规则变化和不规则变化两种: ★形容词和副词的最高级的规则变化 ①单音节和少数双音节单词最高级的构成 ②大部分双音节和多音节单词最高级的构成 构成方法 原级 最高级 单音节和少数双音节单词 一般在词尾加-est tall, long, short, old,hard, fast tallest, longest, shortest, oldest, hardest, fastest 以字母e结尾的词直接加-st nice, fine, large,close, late nicest, finest, largest, closest, latest 以重读闭音节结尾的词，如末尾只有一个辅音字母，应先双写该字母，再加-est big, hot, thin biggest, hottest, thinnest 以“辅音字母 +y”结尾的词先把y变成i, 再加-est busy, easy, early busiest, easiest, earliest 大部分双音节和多音节单词 在单词前加 most careful, carefully, dangerous, slowly, beautiful, beautifully most careful, most carefully, most dangerous， most slowly， most beautiful, most beautifully ★形容词、副词最高级的不规则变化 原级 比较级 good, well best bad/ill, badly worst many/much most little least far farthest / furthest old oldest/eldest 1. fast _______ 2. hot _______ 3. lazy _______ 4. young ________ 5. fine _______ 6. early _______ 7. good _______ 8. ill ________ 9. many_______ 10. fat _______ 11. little ______ 12. busy _______ 13. quickly ____________ 14. useful ___________ 15. famous ____________ 16.bad ________ 17. wet _______ 18. few _______ hottest most useful fattest least most famous most quickly most busiest worst wettest fewest laziest youngest finest earliest best worst fastest 请写出下列形容词、副词的最高级 原则——最高级 三者及以上进行比较 ★1. 三个及三个以上事物的比较状况 Beiye is the most handsome. ★2. 后面通常用in/of/among来表示比较的范围 He is the tallest in our class. ★3. one of … ……之一 Shanghai is one of the biggest cities in the world. She lives (the) closest to school of all my classmates. 注意： 形容词的最高级前通常要加定冠词the；副词的最高级前可加，也可不加。 最高级的使用原则和基本用法 用括号内所给词的适当级别填空 (1) Tommy is one of the _____________________(hard-working) boys in my class and he is regarded as the __________(smart) student in our school. (2) Rose’s hand-writing is the ______(good) among us. (3) Tom is the _____________(old) child in his family. But I am far _____________(old) than him. (4) Your classroom is the ________(wide) and __________(bright) in our school. (5) Who jumps ________(high), Ann, Kate or Lucy? (6) He is one of the ______________(friendly) people in the world. most hard-working smartest best oldest/eldest older/elder widest brightest highest most friendly Now find more sentences with these structures in the reading passage. 1. We have fewer shops and restaurants. 2. But we have the best presents from nature. 3. In my heart, it’s better than any other place. 4. I’m proud to say that I'm from one of the most beautiful places in the world. 5 比较级 最高级 比较级 最高级 The Yellow River: 5,464 km The Yangtze River: 6,300 km The Yellow River is _______ than the Yangtze River. Mount Taishan: 1,532.7m Mount Emei: 3,079.3 m Mount Qomolangma: 8,848.86m Mount Taishan is high. Mount Emei is ________. Mount Qomolangma is the ________. longer higher highest Complete the facts about wonders in China. 6 Complete the passage with the correct form of the words in brackets. 7 The Qiantang River is ________(short) than the Yangtze or Yellow rivers. But it’s still one of the ____________(famous) rivers in China. It’s famous for its tides. Usually it’s a ______(slow) river. But when the tides come, the water runs much _______ (fast). Many tides are two metres _____(high). But the ________(high) tides can be ten metres high! /taɪdz/ 潮汐 shorter most famous slow faster high highest What is its name? Where is it? What is it like? Why do you like it? Work in pairs and discuss. The most beautiful natural place Complete the thinking map about the most beautiful natural place in your opinion. The most beautiful natural place What is its name? Where is it? What is it like? Why do you like it? Useful expressions 1) In my opinion, the most beautiful place is… 2) It is famous for... 3) It is like... 4) Words can’t express my love for... 5) It is one of... in the world. 1. But it’s still one of the most famous rivers in China. 但它仍然是中国最著名的河流之一。(原文再现) “one of+the+形容词最高级+可数名词复数”是一个常用结构，表示“最……的……之一”，其前/后的谓语动词通常用单数形式。 Beijing is one of the biggest cities in China. 北京是中国最大的城市之一。 对点练习 Jay Chou is one of the most popular __________(singer) in China. Language point singers 2. But when the tides come, the water runs much faster. 但是当潮汐来临时，水流得更快了。(原文再现) “much faster”是副词比较级结构， “much”用来修饰比较级“faster”，加强了比较的程度，表示水流动的速度比平时快得多。 “faster”是“fast”的比较级形式，用于比较潮汐来时和平时水流动速度的差异。 对点练习 I am good at math, but his English is _____ than mine. A. much better B. more better C. very better D. pretty better 解析：考查比较级的用法。由than判断出是两者作比较，用比较级，much用来修饰比较级。 A 【 拓展 】 常见的修饰比较级的词 一、表示程度加深 far：This book is far more interesting than that one. 这本书比那本有趣得多。 a lot：She is a lot taller than her sister. 她比她姐姐高很多。 even：The weather is even colder today. 今天天气甚至更冷了。 still：He works still harder than before. 他比以前工作更努力了。 二、表示程度稍弱 a little：This box is a little heavier than that one. 这个盒子比那个重一点。 a bit：The skirt is a bit cheaper. 这条裙子稍微便宜一点。 一、单项选择 1. The boy looks ________ than my brother. A. tallest B. tall C. taller D. the taller 2. This summer is much ________ than last summer. A. too hot B. hot C. hotter D. hottest 3. China is ________ country in Asia. A. large B. larger C. largest D. the largest 4. Jack is taller than ________ student in his class. A. other B. any other C. others D. some 5. I am sorry, this coat is not big enough. I want a ________ one. A. bigger B. big C. small D. smaller A 当堂检测 C D B C 6. Is a computer ______ than me? A. more cleverer B. cleverest C. clever D. cleverer 7. The shoes are too big. Could you show me a ______ pair? A. small B. the smaller C. smaller D. smallest 8. After taking tennis classes, Tim is much ______ than last year. A. Strong B. the stronger C. stronger D. the strongest 9. Laptops(笔记本电脑) are ________ to carry around than desktops. A. light B. cheaper C. easier D. heavy 10. I can’t eat more because I want to be ______. A. fatter B. light C. thinner D. thin D C C C C 二、用所给单词的适当形式填空 1. This math problem is _________(easy) than that one. 2. What a hot day! It will be even _________(hot) tomorrow. 3. The night in the countryside is (quiet) than that in the big city. 4. Canada is bigger than any other (country) in North America. 5. Our city is becoming (nice). There are more trees on the sides of the streets. 6. Annie plays the piano very _______. Sue plays it _________ than Annie, and Sally plays it ________.(well) 7. He is the second _________(tall) boy in our class. tallest easier hotter quieter country nicer well better best THANKS Lavf58.20.100 $