Unit4语法(最高级)讲解与练习-2026-2027学年人教版英语八年级上册

该初中英语讲义围绕“形容词、副词最高级”构建知识体系，通过梳理基本概念、变化规则（含规则与不规则变化）、五大核心句型，以框架化形式呈现知识脉络，突出“the+最高级”结构、范围介词in/of区分等重难点，明确比较级与最高级的内在逻辑联系。 练习设计注重分层与应用，涵盖词形填空、单选、句型转换及汉译英等题型，结合易错警示（如范围匹配、one of后接复数）培养语言能力与思维品质。基础题巩固规则，综合题提升转换能力，答案详解支持学生自主复习，助力教师实施精准化单元复习教学。

Unit4 Amazing Plants and Animals语法讲解与练习 形容词、副词最高级详细讲解 一、基本概念 最高级：用于三者或三者以上人/事物比较，表示 “最……”。 结构核心：the + 最高级 ⚠️重点区分： 两者对比 → 比较级；三者及以上 → 最高级 二、最高级变化规则（和比较级变化逻辑一致） （一）规则变化 A.一般直接 + -est tall → tallest；fast → fastest 例句：The redwood is the tallest tree in this forest. 红杉是这片森林里最高的树木。 B.以不发音字母 e 结尾，直接 + -st nice → nicest；large → largest 例句：The lotus is the nicest flower in the pond. 荷花是池塘里最美的花。 C.重读闭音节（辅+元+辅结尾），双写末尾辅音 + -est big → biggest；thin → thinnest；hot → hottest；slim → slimmest 例句：The cheetah is the slimmest animal among these wild cats. 猎豹是这些野猫当中体型最苗条的。 D.辅音字母+ y 结尾 → 变y为 i + -est lazy → laziest；heavy → heaviest；lively → liveliest 例句：The frog is one of the liveliest animals in the wetland. 青蛙是湿地里最有活力的动物之一。 E.多音节词、部分双音节词 →前面加 most（不能加- est） popular → most popular；interesting → most interesting； hard-working → most hard-working 例句：Ginkgo is one of the most ancient plants on Earth. 银杏是地球上最古老的植物之一。 ❌禁忌：most 和 -est 绝对不能同时使用 ❌ most tallest ❌ most heaviest （二）不规则变化（必背） good / well → best bad / badly → worst many / much → most little → least far → farthest / furthest old→ oldest/eldest 例句：Among all insects, bees work best for the ecosystem. 在所有昆虫里，蜜蜂对生态系统贡献最大。 三、五大核心必考句型 句型 1：主语+ be /实义动词+ the +最高级+范围（in /of/among） ✅ in +地点范围；of / among +同类对象 1.The blue whale is the heaviest animal in the world. 蓝鲸是世界上最重的动物。 2.This butterfly flies the fastest of all insects. 这只蝴蝶是所有昆虫里飞得最快的。 考点：形容词最高级前必须加 the；副词最高级前面 the 可以省略。 He runs (the) fastest. 句型 2：one of the +最高级+可数名词复数 译为：最…… 之一（中考高频） 例句：Peonies are one of the most popular flowers in China. 牡丹是中国最受欢迎的花卉之一。 句型 3：序数词+ the +最高级+名词 译为：第几最…… 例句：This river is the second longest river in this province. 这条河流是本省第二长的河流。 句型 4：选择疑问句：Who/Which + be + the +最高级，A, B or C? 例句：Which animal is the cleverest, the ant, the frog or the cheetah? 蚂蚁、青蛙、猎豹，哪一种动物最聪明？ 句型 5：最高级同义转换（比较级表最高级） 主语+比较级+ than any other +单数名词 =主语+ the +最高级+ in/of… The cheetah runs faster than any other animal on land. = The cheetah runs the fastest of all land animals. 猎豹是陆地上跑得最快的动物。 四、易错警示 1.范围要匹配，人和人比、物和物比 ❌ The leaf is the smallest than the insect. 2.in /of 区分：in 地点；of 同类 3.one of 后面名词必须复数 4.不要混淆：比较级 than（两者）；最高级 in/of（三者 +） 5.副词最高级 the 可省；形容词最高级 the 不能随便省略 五、比较级 VS 最高级简要回顾 两者：比较级 …than… ≥三者：the +最高级+ in/of 【配套专项练习】 一、用所给词适当形式填空 1.The cheetah runs ________ (fast) of all land animals. 2.The blue whale is ________ (heavy) animal in the world. 3.This ginkgo tree is ________ (old) in the park. 4.Lily is ________ (slim) girl in our group. 5.Autumn is ________ (lively) season for butterflies. 6.This story about plants is ________ (interesting) of the three. 7.Who is ________ (hard-working), Amy, Lucy or Tina? 8.Today is ________ (hot) day in this month. 9.Your idea is not as ________ (good) as his. 10.Among all flowers, the lotus is my ________ (favorite). 11.This kind of ant carries ________ (much) food of all insects. 12.The frog is one of ________ (common) animals near the lake. 13.The redwood is the ________ (tall) tree in North America. 14.He speaks English ________ (clearly) in our class. 15.This wetland has ________ (little) pollution of all areas. 16.This is ________ (bad) weather for outdoor wildlife watching. 17.Spring is ________ (warm) than winter.（比较级） 18.The peony is ________ (popular) flower in this garden. 19.Which plant grows ________ (quick), moss, bamboo or grass? 20.The ecosystem here is ________ (valuable) one in the province. 21.She is ________ (quiet) than her twin sister.（比较级） 22.Of all animals, bees work ________ (busy). 23.This is the ________ (thin) branch on the tree. 24.Bamboo is one of ________ (useful) plants for animals. 25.The rainforest has ________ (many) kinds of living things on Earth. 二、单项选择 ( )1. The blue whale is ______ animal ______ the world. A. heavy; in B. the heaviest; in C. heaviest; of D. the heavier; of ( )2. Peonies are one of ______ flowers in China. A. popular B. more popular C. most popular D. the most popular ( )3. —Who runs ______, Tom, Mike or Jack? —Mike. A. fast B. faster C. fastest D. the faster ( )4. This river is the second ______ river in this area. A. long B. longer C. longest D. the longest ( )5. Of all the subjects, I like biology ______. A. good B. better C. best D. well ( )6. The cheetah runs faster than ______ land animal. A. any B. any other C. other D. the other ( )7. This wetland has ______ pollution of all three places. A. little B. less C. least D. the least ( )8. She is ______ student in our class. No one works harder. A. hard-working B. more hard-working C. most hard-working D. the most hard-working ( )9. —Which is ______, the ant, the frog or the butterfly? —The butterfly. A. beautiful B. more beautiful C. most beautiful D. the most beautiful ( )10. This kind of moss grows ______ when it is wet. A. quick B. quicker C. quickest D. more quickly ( )11. The weather becomes ______ in late autumn. A. cold and cold B. colder and colder C. more cold D. most cold ( )12. ______ carefully you watch, ______ animals you will see. A. More; fewer B. The more; the fewer C. More; less D. The more; the less ( )13. He is ______ than any other boy in his group. A. tall B. taller C. tallest D. the tallest ( )14. This is ______ exciting documentary about wild plants I have ever seen. A. most B. the most C. more D. much more ( )15. Her garden is bigger than ______. A. me B. I C. mine D. my 三、句型转换 1.Tom is tall. Tim is taller. Jack is the tallest.（合并一句） _______________________________________________________ 2.The lotus is beautiful. The peony is more beautiful. The rose is the most beautiful. （合并为一句) _______________________________________________________ 3.The cheetah runs faster than any other land animal.（改为最高级） _______________________________________________________ 4.This is the oldest tree in our city.（同义句转换） _______________________________________________________ 5.Bamboo is the most useful plant in this area.（对划线部分提问） _______________________________________________________ 6.Of all flowers, she likes peonies best.（同义句） Peonies are ________ ________ flowers. 7.This room is smaller than that one.（比较级，不变） _______________________________________________________ 8.The yellow river is the second longest river in China.（改为一般疑问句） _______________________________________________________ 9.He studies hardest in his class.（否定句含义改写） Nobody studies ________ ________ him in his class. 10.One of the most amazing animals is the cheetah.（改为一般疑问句） _______________________________________________________ 四、汉译英 1.蓝鲸是世界上最重的动物。 _______________________________________________________ 2.牡丹是中国最受欢迎的花卉之一。 _______________________________________________________ 3.在所有陆地动物当中，猎豹跑得最快。 _______________________________________________________ 4.长江是中国第二长的河流。 _______________________________________________________ 5.这片湿地拥有本省最少的污染。 _______________________________________________________ 6.银杏是地球上最古老的植物之一。 _______________________________________________________ 7.在蚂蚁、青蛙和蝴蝶当中，蝴蝶最漂亮。 _______________________________________________________ 8.他是我们班听讲最认真的学生。 _______________________________________________________ 9.秋天是观察野生动物最好的季节。 _______________________________________________________ 10.竹子对很多动物来说是最有用的植物之一。 _______________________________________________________ Keys 一、词形填空 1.(the) fastest 2.the heaviest 3.the oldest 4.the slimmest 5.the liveliest 6.the most interesting 7.the most hard-working 8.the hottest 9.good 10.favourite 11.the most 12.the most common 13.tallest 14.(the) most clearly 15.the least 16.the worst 17.warmer 18.the most popular 19.(the) quickest 20.the most valuable 21.quieter 22.(the) busiest 23.thinnest 24.the most useful 25.the most 二、单项选择 1.B 2.D 3.C 4.C 5.C 6.B 7.D 8.D 9.D 10.C 11.B 12.B 13.B 14.B 15.C 三、句型转换 1.Jack is the tallest of the three (Tom, Tim and Jack). 2.The rose is the most beautiful of the three flowers. 3.The cheetah runs the fastest of all land animals. 4.No other tree in our city is older than this one. 5.Which plant is the most useful in this area? 6.her favorite 7.That room is bigger than this room. 8.Is the Yellow River the second longest river in China? 9.harder than 10.Is the cheetah one of the most amazing animals? 四、汉译英参考译文 1.The blue whale is the heaviest animal in the world. 2.Peonies are one of the most popular flowers in China. 3.The cheetah runs the fastest of all land animals. 4.The Yangtze River is the second longest river in China. 5.This wetland has the least pollution in the province. 6.Ginkgoes are one of the oldest plants on Earth. 7.Among the ant, the frog and the butterfly, the butterfly is the most beautiful. 8.He is the student who listens most carefully in our class. 9.Autumn is the best season to watch wild animals. 10.Bamboo is one of the most useful plants for many animals. 2 / 2 学科网（北京）股份有限公司 $