Unit4语法(比较级)讲解与练习-2026-2027学年鲁教四五学制版英语八年级上册

该初中英语导学案聚焦形容词、副词比较级、最高级及as…as同级比较，通过规则变化表（一般、e结尾等）和中考高频不规则变化搭建知识支架，衔接课本原句解析，帮助学生从原级过渡到比较等级，构建完整语法体系。 结合自然主题语境设计多样化练习，涵盖填空、单选、句型改写及汉译英，强化语言能力（理解与表达），培养思维品质（比较、分析），配套答案便于自主核对，提升学习能力，助力语法知识的实际运用。

Unit5 Nature’s Temper语法讲解与练习 语法精讲：形容词&副词的比较级、最高级+ as…as同级比较 一、形容词、副词三级变化（原级比较级最高级） 1. 规则变化表 变化规则 原级 比较级 最高级 一般直接 +er /est deep, tall deeper, taller deepest, tallest 以 e 结尾 +r /st large larger largest 重读闭音节：辅元辅,双写末尾辅音+er/est big bigger biggest 辅音字母 + y 结尾，变y为i+er/est heavy heavier heaviest 副词以ly 结尾 early quickly earlier, more quickly earliest, most quickly 2. 必背不规则变化（中考高频） 原级 比较级 最高级 good / well better best bad / badly worse worst many / much more most little less least far farther（距离）/further（程度） farthest / furthest 课本原句：The Yangtze River travels the farthest in China. 解析：farthest 副词最高级，表距离最远，修饰动词 travels。 二、最高级用法（三者及以上范围 “最……”） ✅结构： the + 形容词/副词最高级 + in /of +范围 in +地点/集体范围（in the world /in China） of +同类对象（of all the rivers） 课本例句 1：What is the biggest desert in the world? 翻译：世界上最大的沙漠是什么？ 解析：the biggest 形容词最高级；in the world 范围。 课本例句 2：Where is the deepest point in the ocean? 翻译：海洋最深的地方在哪里？ 解析：the deepest 形容词最高级。 ✅必考句型 1：one of the +形容词最高级+复数名词 含义：最…… 之一 课本：Mount Qomolangma is one of the greatest wonders of the world. 翻译：珠穆朗玛峰是世界上最伟大的奇观之一。 ⚠️易错点：one of 后面名词必须复数，最高级前面要有the ✅必考句型 2：the 序数词 + 最高级 + 名词 第几最…… The Yangtze River is the third longest river in the world. 长江是世界第三长河。 ✅副词最高级：修饰动词，the 可以省略（书面常保留 the） The Yangtze River travels (the) farthest in China. 长江在中国流淌得最远。 三、比较级用法（两者对比，“更……”） ✅结构：比较级+ than Qomolangma is taller than any other mountain in China. 珠穆朗玛峰比中国其他任何一座山都高。 拓展：比较级表最高级含义：比较级+ than any other +单数名词 It is still growing taller.（课本原句）它还在变得更高。 比较级可以单独使用，表示 “变得更加……”，后面可不接 than 四、as…as 同级比较（原级比较，课本句子 as well as） 课本原句：Some deepsea animals are blind, but they can “see” as well as others. 翻译：一些深海动物看不见，但是它们可以和其他动物 “看得” 一样好。 解析：as +副词原级+ as，修饰动词 see，well 是副词原级。 肯定：as + adj./adv. 原级 + as 和…… 一样…… He runs as fast as a deer. 他跑得和鹿一样快。 否定：not as /so + adj./adv. 原级 + as 不如…… The lake is not as deep as the sea. 这个湖泊没有大海那么深。 ⚠️中间只能放原级，不能放比较级、最高级。 📌课本原句 1.What is the biggest desert in the world? It is the Sahara Desert. 世界上最大的沙漠是什么？是撒哈拉沙漠。 2.How big is it? It is about 9,000,000 square kilometres in size. 它多大？面积大约 900 万平方千米。 3.Where is the deepest point in the ocean? It is in the Mariana Trench. 海洋最深点在哪里？在马里亚纳海沟。 4.How deep is it? It is about 11,000 metres deep. 它有多深？大约 11000 米深。 5.Some deepsea animals are blind, but they can “see” as well as others. 有些深海动物看不见，但它们可以和其他动物 “看得” 一样好。 6.Mount Qomolangma is one of the greatest wonders of the world, and it is still growing taller. 珠穆朗玛峰是世界上最伟大的奇观之一，并且它还在不断变高。 7.The Yangtze River travels the farthest in China and is about 6,300 kilometres long. 长江在中国流程最远，长约 6300 千米。 【配套练习】 Ⅰ. 用括号内单词适当形式填空 1.The Sahara is the ________ (big) desert in the world. 2.The Mariana Trench is the ________ (deep) point of all oceans. 3.This river is ________ (long) than that small river. 4.Qomolangma is one of the ________ (great) natural wonders in the world. 5.Among all the rivers in China, the Yangtze runs ________ (far). 6.He can see ________ (well) as other animals though he has no eyes. 7.This mountain is getting ________ (tall) year by year. 8.Which is ________ (heavy), the desert rock or the sea stone? 9.The Pacific Ocean is the ________ (large) ocean on Earth. 10.This cave is not as ________ (deep) as the other one nearby. 11.Yellow River is the second ________ (long) river in China. 12.Tom writes ________ (quickly) than his deskmate. 13.Of all the natural wonders, which one is ________ (amazing)? 14.The lake is much ________ (wide) than it was 20 years ago. 15.She doesn’t run as ________ (fast) as her brother. 16.This is one of ________ (wonder) places I have ever visited. 17.—How ________ (high) is the hill? —It’s 600 metres high. 18.Our planet is becoming ________ (hot) than before. 19.Who jumps ________ (far) in your class? 20.The weather here is not so ________ (cold) as that in the north. Ⅱ. 单项选择 ( )1. The Sahara is ______ desert in the world. A. big B. bigger C. biggest D. the biggest ( )2. Qomolangma is one of ______ wonders in the world. A. great B. greater C. the greatest D. greatest ( )3. The Yangtze River runs ______ than many other rivers in Asia. A. far B. farther C. farthest D. the farthest ( )4. Some sea animals can “see” as ______ as other animals. A. well B. good C. better D. best ( )5. —How deep is the hole? —It is much ______ than that one. A. deep B. deeper C. deepest D. the deepest ( )6. Of all the lakes, this one is ______. A. wide B. wider C. widest D. the widest ( )7. This river is the third ______ river in our country. A. long B. longer C. longest D. the longest ( )8. He doesn’t swim as ______ as his father. A. fast B. faster C. fastest D. the fastest ( )9. The mountain is getting ______. A. tall and tall B. more tall C. taller and taller D. most tall ( )10. Which is ______, the desert or the forest? A. dry B. drier C. driest D. the driest ( )11. —Who is ______ student in your class? —Lucy. She is taller than any other student. A. tall B. taller C. the tallest D. tallest ( )12. Among all the birds, eagles fly ______. A. high B. higher C. highest D. the highest ( )13. This place is not so ______ as I expected. A. amazing B. more amazing C. most amazing D. the most amazing ( )14. The sea is ______ than the lake. A. deep B. deeper C. deepest D. the deepest ( )15. One of ______ natural wonders is Qomolangma. A. world’s great B. the world’s greatest C. world great D. the world great Ⅲ. 句型改写 1.Qomolangma is high. It is higher than any other mountain in China.（合并为最高级句子） ______________________________________________________ 2.This river is 6300 kilometres long. That river is 5000 kilometres long.（用比较级合并） ______________________________________________________ 3.The Pacific Ocean is the largest ocean in the world.（改为比较级，than any other） ______________________________________________________ 4.Tom runs fast. Jack runs fast too.（用 as…as 合并句子） ______________________________________________________ 5.This cave isn’t deep. That cave is deeper.（改为 not as…as） ______________________________________________________ 6.Mount Qomolangma is one of the greatest wonders of the world.（对划线部分提问） ______________________________________________________ 7.Of all the deserts, the Sahara is the biggest.（同义句转换） ______________________________________________________ 8.Mike jumps farthest in his class.（改为比较级：than any other boy） ______________________________________________________ 9.The lake is very beautiful. It is more beautiful than many other lakes.（改为 one of 最高级） ______________________________________________________ 10.This animal can see well. It can’t see as well as fish.（合并） ______________________________________________________ Ⅳ. 汉译英 1.撒哈拉沙漠是世界上最大的沙漠。 ______________________________________________________ 2.珠穆朗玛峰是世界上最伟大的自然奇观之一。 ______________________________________________________ 3.长江比中国许多其他的河流流程更远。 ______________________________________________________ 4.这个深海动物可以和别的动物看得一样清楚。 ______________________________________________________ 5.马里亚纳海沟是海洋里最深的地方。 ______________________________________________________ 6.这个湖泊没有大海那么深。 ______________________________________________________ 7.黄河是中国第二长河。 ______________________________________________________ 8.在所有的山中，珠穆朗玛峰最高。 ______________________________________________________ 9.这座山一年比一年变得更高。 ______________________________________________________ 10.哪一个是世界上最令人惊叹的自然奇观？ ______________________________________________________ Keys Ⅰ. 词形填空 1.biggest 2.deepest 3.longer 4.greatest 5.(the) farthest 6.well 7.taller 8.heavier 9.largest 10.deep 11.longest 12.more quickly 13.the most amazing 14.wider 15.fast 16.the most wonderful 17.high 18.hotter 19.(the) farthest 20.cold Ⅱ. 单项选择 15 DCBAB 610 DCACB 1115 CDABB Ⅲ. 句型改写 1.Qomolangma is the highest mountain in China. 2.This river is longer than that river. 3.The Pacific Ocean is larger than any other ocean in the world. 4.Tom runs as fast as Jack. 5.This cave is not as deep as that cave. 6.What is one of the greatest wonders of the world? 7.The Sahara is bigger than any other desert in the world. 8.Mike jumps farther than any other boy in his class. 9.The lake is one of the most beautiful lakes. 10.This animal can see well, but it can’t see as well as fish. Ⅳ. 汉译英 1.The Sahara Desert is the biggest desert in the world. 2.Mount Qomolangma is one of the greatest natural wonders in the world. 3.The Yangtze River travels farther than many other rivers in China. 4.This deepsea animal can see as well as other animals. 5.The Mariana Trench is the deepest point in the ocean. 6.This lake is not as deep as the sea. 7.The Yellow River is the second longest river in China. 8.Of all the mountains, Qomolangma is the highest. 9.The mountain is getting taller year by year. 10.Which is the most amazing natural wonder in the world? 2 / 2 学科网（北京）股份有限公司 $