Unit6语法专项课件- (not）as…as…同级比较2026-2027学年沪教版英语（五四学制）七年级上册

该初中英语课件聚焦（not）as…as…同级比较语法点，从定义入手区分as…as（同等）与not as/so…as（不如），通过基础句型表格搭建框架，结合肯定否定句例句巩固，再过渡到同义转换及与比较级、最高级的辨析，形成递进式学习支架。 其亮点在于分层练习覆盖填空、句型转换等多种题型，易错点专项解析（如误用比较级、肯定句用so等）提升语言能力，通过三种比较句式对比培养思维品质。学生可巩固基础减少错误，教师可直接使用提升教学效率。

教学课件 沪教英语（五四学制）七年级上册 Unit6 语法专项 —— （not）as…as…同级比较 全解精讲+分层练习 1 1.理解同级比较含义，分清 as…as 与 not as/so…as 区别 2.牢记核心规则：中间必须使用形容词原级 3.熟练掌握同级比较与比较级 than 的同义互换 4.辨析同级比较、比较级、最高级三种句式 学习目标 什么是同级比较 同级比较：对比两个人 / 事物，程度相同或不等 as…as…：和…… 一样（程度相等） not as/so…as…：不如……（前者程度弱于后者） 区别于比较级（两者有差距）、最高级（三者及以上） 基础句型表格 句式 完整结构 中文含义 肯定同级 A be as + 原级 + as B A 和 B 一样…… 否定同级 A be not as/so + 原级 + as B A 不如 B…… 关键要求：中间形容词只能用原形，不能变形 肯定句 as…as… 讲解 固定结构：主语 + be + as + 形容词原级 + as + 对象 例句 1：This river is as clear as that one. 例句 2：His room is as big as mine. 翻译：这条河和那条一样清澈；他的房间和我的一样大 否定句 not as…as… 讲解 结构：主语 + be + not as + 原级 + as + 对象 同义替换：not so…as…，二者完全通用 例句：Harbin’s winter is not as warm as Sanya’s. 翻译：哈尔滨的冬天不如三亚暖和 核心硬性规则（必记） 1.as 与 as 中间只能放形容词原级 错误：as longer as /as more beautiful as 正确：as long as /as beautiful as 2.否定句 as 可替换为 so，肯定句只能用 as 例句巩固（肯定） 1.This mountain is as famous as that hill. 这座山和那座小山一样有名。 2.The book is as interesting as the magazine. 这本书和杂志一样有趣。 3.Her drawing is as colourful as mine. 例句巩固（否定） 1.The Yellow River is not as long as the Nile. 黄河不如尼罗河长。 2.This lake is not so deep as the sea. 这个湖泊不如大海深。 3.My bag is not as heavy as yours. 重难点：同义句转换公式 转换规则 1：A not as + 原级 as B = B + 形容词比较级 + than A 例：Tom is not as tall as Jack. = Jack is taller than Tom. 转换公式反向运用 转换规则 2：B + 比较级 + than A = A not as + 原级 + as B 原句：Lucy is thinner than Lily. 改写：Lily is not as thin as Lucy. 三种比较句式对比 1.as…as… 同级：两者程度相同 2.not as…as… 同级：前者弱于后者 3.比较级 + than：前者强于后者 举例： A is as tall as B / A not as tall as B / A taller than B 易混易错点 1：误用比较级 典型错误：He is as taller as me. 错误原因：as 中间不能放比较级 正确写法：He is as tall as me. 扣分关键点，填空、改错常考 易混易错点 2：肯定句用 so 错误：He is so tall as his father. 规则：so 仅用于否定句 not so…as… 肯定句只能使用 as…as…，不可替换 易混易错点 3：漏写第二个 as 错误：This park is as big the zoo. 完整结构必须成对出现 as，前后缺一不可 正确：This park is as big as the zoo. 易混易错点 4：对象重复累赘 错误：The river is as long as the river. 前文出现过的名词，可用名词性物主代词替代 正确：The river is as long as that one /his 题型一 基础填空（使用 as…as /not as…as） 1.This street is __________(wide) __________that road. 2.The box is ________________(light) __________the suitcase. 3.Today is __________(hot) __________yesterday. 4. His geography is __________(good) __________mine. 5. This story is __________(exciting) __________the cartoon. 6. The small town is ____________(quiet) __________big cities. as wide as not as light as as hot as as good as as exciting as not as quiet as 题型二 句型转换（比较级转同级否定） 1.Mike is stronger than Leo.（改为同级比较） Leo is ________________________________________Mike. 2.This garden is prettier than the yard. The yard is ________________________________________this garden. 3.The desk is not as smooth as the shelf. The shelf is ____________________the desk. 4.Spring is not as dry as winter. Winter is ____________________spring. not as strong as not as pretty as smoother than drier than 题型四 单项选择 1.This garden is __________lovely __________the park. They look the same. A. as; as B. not as; as C. more; than 2.The north is __________warm __________the south in winter. A. as; as B. not so; as C. so; so 3. He isn’t __________hard-working __________his twin sister. A. more; as B. so; than C. as; as 4. —Is your pen __________expensive as his? —No, mine is cheaper. A. so B. as C. more A B C B 题型五 选词填空 as /so 1.This film is __________moving __________the last one. 2.It is not __________difficult __________you think. 3.The shop isn’t __________big __________the supermarket. 4. Mount Huang is ____________(high) __________Mount Tai. 5. The lake water is __________(clean) __________sea water. 6. Local snacks are __________(delicious) __________foreign food. as as so as so as not as high as not as clean as as delicious as 题型七 改错训练（找出错误并改正） 1.She is as thinner as her elder sister. 2.This town is so quiet as the village. 3.The cat not as cute as the rabbit. 题型八 根据中文提示完成句子 1.这座桥和那座一样长。 This bridge is ______________________________that one. 2.我的笔记本不如他的新。 My notebook is ______________________________his. thinner→thin so→as not 前加 is as long as not as new as 题型九 同义句改写综合练习 1.The red bag is heavier than the blue one.（两种句式互换） 2.Swimming is not as relaxing as reading.（转换比较级） 综合混合小测 1.This skirt is __________(beautiful) __________that dress. 2.Winter is __________(wet) __________summer here. 3.The library is not __________(bright) __________the classroom. The blue bag is lighter than the red one. / The blue bag is not as heavy as the red one. Reading is more relaxing than swimming. as beautiful as not as wet as as bright as 本节课核心总结 1.同级比较两类结构：as…as 同等；not as/so…as 不如 2.硬性规则：两 as 中间必须用形容词原级 3.同义互换：A 不如 B = B 比 A 更…… 4.三大易错：中间加比较级、肯定句用 so、缺第二个 as 教学课件 Unit6 语法专项 —— （not）as…as…同级比较 Thank you for listening! 24 $