Unit 7 Section A Grammar Focus-4c 课件 2024-2025学年人教版英语八年级下册

Section A (Grammar-4c) 4a Fill in the blanks with the correct forms of the words in the box. big much popular long old high 1. The Amazon River is one of the _ rivers in the world. It’s a little _ than the Yangtze River. 2. Qomolangma is 8,844.43 meters _. It’s one of the most _ places for serious mountain climbers. 3. No ocean in the world is as _ as the Pacific Ocean. 4. Although Japan is _ than Canada, it is _ smaller. longest longer high popular big older much 形容词和副词的比较级和最高级 大多数形容词有三个级。 原级: 常用结构as ... as ... 像……一样 Zhang Hong is as tall as Tom. 张红和汤姆一样高。 2) 比较级 (用于两者之间的比较) 较...更...一些/关键词than 常用结构:形容词比较级+than ... He is taller than I. 他比我高。 Grammar 3) 最高级(用于三者或三者以上的比较), 最... 常用结构: the + 形容词的最高级+of / in ... He is the tallest of the three. 他是这三个人中最高的。 He is the funniest in his class. 他是他们班最有趣的。 句型大闯关 规则变化:词尾变,词前变 情况 变化形式 举例 一般情况 在词尾直接加-er/-est small—smaller-smallest 以e结尾 加-r/-st large—larger-largest 重读闭音节词词尾只有一个辅音字母时 先双写辅音字母再 + er/-est fat—fatter-fattest 以辅音字母y结尾的双音节词 变y为i,再加 -er/est happy—happier-happiest 多音节和部分双音节词 在原形前加more/most beautiful—more beautiful-most beautiful 2. 变化规则 less/least 句型大闯关 不规则变化 原级 比较级 good/well better-best bad/badly worse-worst many/much more-most little less-least far farther-farthest further-furthest 一、形容词/副词的原级 当相比较的两者/部分在程度上相同时,用原级比较。 1.肯定结构:as+形容词/副词原级+as 和...一样 2. 否定结构: not as/so+形容词/副词原级+as 不像...那样 二、形容词/副词的比较级 当两者/部分相比较,表示...比...更...时,应用比较级。相比较的两者/部分必须是属于同一性质或范畴的人或物。 1. 变化规则(规则/不规则) 2. 用法 (1)“比较级+than” 比...更... (2)“the+比较级...,the+比较级...”越...,越... the earlier, the better (3)“比较级+and+比较级”越来越... more and more +形容词或副词原级 (多音节/部分双音节词) 越来越 It’s getting worse and worse. The group became more and more popular. 3. 形容词/副词比较级的修饰语 比较级前常有much,far,a lot,even,still,a little, a bit(一点),倍数等修饰,表示两者/部分差异程度的大小。 much/a lot/far+比较级:...得多 a bit/a little+比较级:稍微... even+比较级:甚至... This city is much more beautiful than before. She’s a little more outgoing than me. It’s a little colder today. 4. “Which / Who is + 比较级…?” 比较A、B两事物, 问其中哪一个较……时 用此句型。如: Which T-shirt is nicer, this one or that one? Who is more active, Mary or Kate? Which one is more popular among students, going to concerts or going to movies? 最高级 1. 当对三者或三者以上(人或物)进行比较(其中有一个超过其他几个),表示“最…”的含义时,需要用最高级,后面可用of/in短语等来说明比较的范围。 2. 形容词最高级的前面一般要加定冠词the,副词最高级前的the可以省去。 the funniest the most interesting (the) fastest (the) most quickly (若形容词前有形容词性物主代词或名词所有格等修饰时,则不需要加the:my best friend, my sister’s worst picture) 10 Grammar 形容词副词最高级的构成(P114) 1.规则变化 (发音)2. 不规则变化 11 Grammar 最高级用法(常用句型) 主语+be+the+形容词最高级+in/of短语: …是…中最…的。 Tom is the tallest in his class. Tom is the tallest of all the students. (in/of短语表示最高级的比较范围。如果主语与介词短语中的名词属于同一类,用介词of,如果不属于同一类,则用介词in) 12 Grammar 2. 主语+实意动词+(the)+副词最高级+in/of短语:…是…中最…的 I jump (the) highest in my class. I jump (the) highest of all the students. 3. 主语+be + one of the+形容词最高级+可数名词复数+in/of短语:…是…中最…的之一。 Beijing is one of the largest cities in China. 13 Grammar 4. the+序数词+形容词最高级+名词:第几最…的 The Yellow River is the second longest river in China. 5. 疑问词+ be + the +形容词最高级+甲,乙or丙? Which country is the largest, China, America or Canada? 14 Grammar 6. 疑问词+助动词+主语+动词原形+(the)副词最高级+甲,乙or丙? Which season do you like (the) best, spring, summer or autumn? 15 Grammar 比较级表达最高级含义 A.同一范围内进行比较(other排除自身) 比较级+than any other +可数名词单数: 比其他任何一个…都更… China is larger than any other country in Asia. =China is the largest country in Asia. (中国是亚洲最大的国家。) 16 Grammar 2. 比较级+than (all) the other+可数名词复数:比其余(所有)的…都更… Jim sings better than (all) the other students in his class. (吉姆唱歌比班上其他学生都好。) 17 Grammar B. 非同一范围内进行比较 比较级+than any+可数名词单数:比其他任何…都… China is larger than any country in Africa. (中国比非洲的任何国家都大。) Susan is taller than any girl in her sister’s class. (苏珊比她姐姐班里的任何一个女生都高。) 18 Grammar 最高级可被序数词等修饰。 Africa is the second largest continent. 非洲是第二大洲。 19 5. The Amazon River is a little _(long) than the Yangtze River . 6.Even _ (serious) difficulties include freezing weather conditions and heavy storms. 7.China has a much _(long) history than the US. 8.Can you tell me a lot_ (much) about China. 9. One of the world’s _ (dangerous) sports is mountain climbing. 10 The Nile is _ (long) in the world . 11 The Caspian Sea is _ (deep) of all the salt lakes. longer more serious longer more most dangerous the longest the deepest 3. Lin Tao is _ in the class because he never gets to school on time. (最懒的学生之一) 4. Edison was_ in the world. (最伟大的发明家之一) one of the laziest students one of the greatest inventors The Yangtze River is_ river in the world. (第三长河) the third longest 2. The Atlantic is _ ocean in the world. ( 第二大洋) the second biggest 翻译句子: 21 同义句转换 1. Flat A is more expensive than Flat B Flat B is _ _ than Flat A. Flat B is _ _ Flat A. Flat B is not _ _ _ Flat A. 2. I prefer maths to English. I like maths _ English. better than 3.He is the tallest student in the class. He is _ in the class. taller than any other student any other + 名词单数 less expensive cheaper than as expensive as 22 1.Hainan is a very large Island .It is the second _ island in china. (large) 2.Our teacher is as _ as before. (busy). 3.He is _ among us. (careful) 4.Li Lei jumped far _ than Jim. (far) 5.The busier he is, the _ he feels. (happy) 6.I think Yao Ming is one of _ basketball players in NBA. (hot) busy the most careful farther happier largest the hottest 完成句子 23 .Talk about the two pictures with the comparatives and superlatives. The Amazon River The Yangtze River . 6,400 km 6,300 km The Yangtze River is almost as long as the Amazon. The Amazon is longer than the Yangtze River, but the Yangtze River is the longest river in China. 4b Shanghai is as modern as New York . New York is bigger than Shanghai , but Shanghai is the biggest city in China. Shanghai New York A dog is as big as a monkey. A monkey is smaller than a dog. But it climbs a tree faster than a dog. Monkey Dog 4C . Write five questions using comparisons . Then ask your partner your questions 1. What’s the highest building in our city ? 2._ 3._ 4._ 5._ ………………….. What’s the largest shopping mall in our city? What’s the most beautiful park in our city? What’s the widest road in our city? What’s the best hotel in our city ? 4c 1. Kate is young, but Joe is _. 2. My shoes are new. My sister’s are _ than mine. 3. Her bag is heavy, and his is _ than hers. But yours is _ of all. 4. Tom’s kite is high. Jim’s is _ than Tom’s. Mike’s is _ of them all. 5. Bill is seven. John is nine and Tom is eleven. Tom is _ than John and Bill. Bill is _ than John. Bill is _ and Tom is _ of the three. younger newer heavier the heaviest Finish the sentences with the right forms of the adjectives. the highest older younger the youngest the oldest higher $$