必修1 倍数比较级-备战2025-2026学年高中英语上学期期末语法全解（外研版）

ENGLISH-高中系列资料（外研版） Chapter1倍数比较级 考频分析 倍数比较级是高中英语语法的重要模块，考频占语法总量的5%左右，主要分布在核心题型中：单项选择 (1-2题)、完形填空(1-2题)、语法填空(1题)。在语境理解类题目中，倍数比较级的结构搭配及语义辨 析往往是解题关键。 考查内容 高中英语对倍数比较级的考察聚焦三大维度，覆盖基础结构与语境应用： ·基本倍数结构：倍数+as+原级+as;倍数+比较级+than;倍数+the+名词+of; ·倍数与分数百分数结合：分数百分数+o+倍数结构的转换与应用； ·语境中的倍数表达：倍数在图表描述、数据分析及日常比较场景中的准确运用。 精讲精练 知识点一：倍数比较级的构成及用法 ·1.”A+倍数+as+原级+as+B”(A是B的几倍) -常见倍数词：twice(两倍)、three times(三倍)、four times(四倍)等 -例句：口This room is twice as big as that one..(这个房间是那个的两倍大)口The river is three times as long as the path.(这条河是那条小路的三倍长) ·2.”A+倍数+比较级+than+B”(A比B大/长/多几倍) -比较级变化规则：单音节词加-er(如big-→bigger),双音节词前加more(如important->more important) -例句：口The population of this city is three times larger than that of the town.(这个城市的人☐比那 个城镇多三倍)口This building is twice taller than the old one.(这座楼比那座旧楼高两倍) ·3.”A+倍数+the+名词(size/length/height//weight等)+of+B”(A的大小V长度/高度/重量等是B 的几倍) -常用名词：size(大小)、length(长度)、height(高度)、width(宽度)、weight(重量) -例句：口The new square is four times the size of the park.(新广场的大小是公园的四倍)DThe whale's weight is twenty times the weight of the elephant.(鲸鱼的体重是大象的二十倍) 【即学即练】 1.【基本结构辨析】”这座桥是那座桥的五倍长”，以下正确的英文表达是？ A.This bridge is five times as long as that one. B.This bridge is five times longer as that one. C.This bridge is five times the long of that one D.This bridge is five time as long as that one. 2.【倍数结构填空】The new park is three times_(big)as the old one. 3.【名词搭配辨析】”这座山的高度是那座小山的十倍”，括号内应填哪个名词？ A.size B.height C.length D.weight 4.【比较级变化】写出"important'”在倍数比较级结构中正确的比较级形式： 5.【结构转换】将"This room is twice as big as that one..”转换为”倍数+the+名词+of”结构： 高中|英语|外研版|必修1 ENGLISH-高中系列资料（外研版） 知识点二：倍数比较级的易错点及特殊结构 ·1.倍数词与分数百分数的转换 1.分数表达倍数：分数（如a third,half)+as+原级+as例句：This box is a third as heavy as that one.(这个盒子的重量是那个的三分之一) 2.百分数表达倍数：百分数（如50%）+as+原级+as例句：The output this year is200%as much as last year..(今年的产量是去年的两倍) ·2.”倍数+比较级+than”的歧义与避免 1.歧义点：在表示”A比B大n倍”时，需注意"n times larger than'”在部分语境中可能被理解为"n+1倍” (如中文习惯)，但英语中标准表达为"A是B的n倍”（即比B大n-1倍） 2.避免歧义：优先用”A+倍数+as+原级+as+B”或”A+倍数+the+名词+of+B”例句：口正 t确：The population is three times as large as that of1990.(人☐是1990年的三倍)D易歧义：The population is three times larger than that of1990.(建议替换为第一种结构) ·3.倍数词修饰名词短语的后置结构 1.结构：名词短语+of+倍数词+what从句(what指代前文提到的同类事物)例句：The price of the car is half of what it was last year..(这辆车的价格是去年的一半) 2.结构：倍数词+that/those of..(that/those指代前文的名词，避免重复)例句：The area of this city is four times that of my hometown.(这座城市的面积是我家乡的四倍) ·4.否定形式的倍数比较 1.结构：not+倍数词+as+原级+as(表示”不到.倍”)例句：This bridge is not twice as long as the old one.(这座桥不到l旧桥的两倍长) 2.结构：less than+倍数词+as+原级+as(表示”少于.倍")例句：Her salary is less than three times as much as mine.(她的工资不到我的三倍) 知识点三：倍数比较级的综合应用与转换练习 ·1.倍数结构的同义转换（高考核心) 1.”倍数+as+原级+as”与”倍数+the+名词+of”转换例句：This river is three times as long as that one.-This river is three times the length of that one 2.”倍数+as+原级+as”与”分数/百分数+as+原级+as”转换例句：The box is twice as heavy as that.-That box is half as heavy as this one. ·2.倍数比较级在复合句中的运用（高考难点） 1.状语从句中的倍数表达例句：hen completed,the library will be four times as large as the old building.(as引导比较状语从句) 2.定语从句中的倍数表达例句：We visited a factory whose output is five times that of2010.(whose 引导定语从句，that指代output) ·3.倍数比较级与情态动词结合（高考常考) 1.can/could+倍数+as+原级+as例句：This new material can be twice as strong as steel.. 2.may/might+倍数+the+名词+of例句：The project's cost might be three times the budget. ·4.倍数比较级的反义表达（高考易错） 1.”倍数+as+原级+as”的反义：”倍数+less+原级+than”例句：This room is twice as big as that. That room is twice less big than this 2.”倍数+the+名词+of”的反义："onel倍数+of the+名词+of例句：Her salary is three times that of mine.-My salary is one third of hers. 高中|英语|外研版|必修1 ENGLISH-高中系列资料（外研版） 考法一：倍数比较级基本结构辨析 ·核心：根据语境选择正确的倍数比较级结构(A+倍数+as+原级+as+B/A+倍数+the+名词+of +B) ·真题1（语法填空）： The newly built stadium is three times_(big)as the old one. 一答案：as big解析：根据结构”A+倍数+as+原级+as+B”,此处需填入”as big”,构成"three times as big as”,表示”三倍大”。 ·真题2（完形填空）： The length of the new bridge is four times_of the old bridge. A.that B.this C.one D.it -答案：A解析：根据结构”A+倍数+the+名词+of+B”的变体（用that指代前文的length),此处 需t填入that,构成"four times that of”,表示”四倍长”。 考法二：倍数比较级的同义转换与歧义避免 ·核心：掌握不同倍数结构的同义转换方法，能识别并避免”倍数+比较级+than”结构的歧义 ·真题1（语法填空）： -The new playground is three times as large as the old one.(同义转换) -The new playground is three times__of the old one. -答案：the size解析：”A+倍数+as+原级+as+B”可转换为”A+倍数+the+名词+of+B”,此 处large对应名词size,故填the size。. ·真题2（单项选择）： The population of this city is that of our town. A.twice larger than B.twice as large as C.twice as larger as D.two times as large -答案：B解析：选项A中"twice larger than”存在歧义，不符合避免歧义的优先用法；选项C中as..as 中间应用原级large;选项D缺少as;"A+倍数+as+原级+as+B”为避免歧义的标准结构，故选 B。 考法三：倍数比较级的综合转换与语境应用 ·核心：结合倍数结构的同义转换、歧义避免及特殊句式，在具体语境中准确选择或填写倍数表达形式 ·真题1（单项选择）： The area of this lake is_that of the island.It's suitable for water sports. A.twice as large as B.twice larger than C.two times as larger as D.two times the size than -答案：A解析：选项C中”as.as”结构后应接原级，"larger'”为比较级，错误；选项D"the size than” 搭配不当，正确结构为"the size of”;选项B"twice larger than”存在歧义，根据知识点二易错点2，优 先使用”倍数+as+原级+as”结构，A选项"twice as large as”符合规范，意为”两倍大”。 ·真题2（语法填空）： The new stadium's capacity is three times _(what/that)of the old one.More fans can watch matches now -答案：that解析：根据知识点二特殊结构3，”倍数+that/those of..”可避免名词重复，此处指代前文 的"capacity'”(单数名词)，用"that”;”what”引导从句时需完整表述（如"half of what it was”),本句空 格后无从句，故填"that"。 高中|英语|外研版|必修1 ENGLISH-高中系列资料（外研版） 解题小妙招 倍数结构有两种，基本用法要记清； A倍as原级asB,A倍the名词ofB; 同义转换看对应，形容词变名词行； 歧义避免是关键，倍数as原级as优先选； that those替名词，避免重复更简明； as.as中用原级，比较级than易歧义； 综合应用看语境，结构正确无疑问。 真题演练 演练一：单项选择试题（共10题） 1.The population of China is_that of Japan. A.three times as large as B.three times larger than C.three times as larger as D.three times more large than 2.This river is-the one in my hometown. A.twice length of B.twice the length of C.twice longer than D.twice as longer as 3.The new building is the old library. A.four times as tall than B.four times the height of C.four times taller as D.four times height of 4.The output of rice this year is-last year. A.150%as much as B.150%more than C.150%as many as D.150%much as 5.The price of this car is now half _it was five years ago A.of what B.than that C.as those D.that of 6.Her salary is-mine. A.three times as high than B.three times higher as C.three times the height of D.three times as high as 7.The area of this park is_that of the square. A.half as big than B.half as big as C.half bigger than D.half the big of 8.This room is _the one next door. A.a third as small as B.a third smaller than C.a third as smaller as D.a third the size than 9.The speed of the train is_the bus. A.twice as fast than B.twice faster as C.twice the speed of D.twice as faster as 10.The weight of the elephant is_the horse. A.five times as heavy as B.five times heavier than C.five times heavy than D.five times as heavier as 演练二：填空试题（共10题） 1.The new school is twice_the old one.(这座新学校是I旧学校的两倍大) 2.The length of the bridge is three times_the river.(这座桥的长度是那条河的三倍) 3.This box is a quarter_that one.(这个盒子的重量是那个的四分之一) 4.The cost of the project is now300%ast year..(这个项目的成本是去年的三倍) 5.The size of this city is four times_of my hometown.(这座城市的大小是我家乡的四倍) 6.The machine's efficiency is half_it was last month.(这台机器的效率是上个月的一半) 7.The number of students in our class is not twice_theirs.(我们班的学生人数不到他们班的两倍) 8.The height of the mountain is five timesthe hill..(这座山的高度是那座小山的五倍) 9.The output of this factory is50%_it was in2020.(这家工厂的产量是2020年的-半) 10.The price of the house is three times_the car..(这栋房子的价格是那辆车的三倍) 演练三：语法填空试题（共10空） The Eiffel Tower,one of the most famous landmarks in Paris,attracts millions of visitors every year.Many people don't know that its height is actually_(1)(two)the original design.When built in 1889,it was 300 meters tall,but with the addition of antennas,it is now 330 meters-(2)(1.1 times as tall as)the original structure. The area of the base of the Eiffel Tower is about 10,000 square meters,which is_(3)(three times the size of)a standard football field.The weight of the tower is 7,300 tons,_(4)(less than half as heavy as) the Pyramid of Giza,which weighs about 5.9 million tons. Interestingly,the tower's width at the base is 125 meters,while at the top it is only 41 meters-(5)(a third as wide as)the base.The number of steps to the top is 1,710,which is_(6)(twice as many as)the steps in the Statue of Liberty(860 steps). In terms of visitor capacity,the Eiffel Tower can hold 5,000 people at once,-(7)(five times the capacity of)a small theater(1,000 people).The ticket price for adults is E17,which is_(8)(170%as much as) the price in 2010(E10). Engineers say the tower's durability is remarkable:its lifespan is estimated to be 1,000 years,_(9)(ten times that of)the average modern building(100 years).Finally,the tower's height is_(10)(not three times as tall as)the Burj Khalifa(828 meters),but it remains an icon of architectural genius. 答案 演练一：单项选择 1.A2.B3.B4.A5.A6.D7.B8.A9.C10.A 演练二：填空试题 1.as big as 2.the length of 3.as heavy as 4.as much as 5.that 6.of what 7.as many as 8.the height of 9.as much as 10.the price of 演练三：语法填空 1.twice 2.1.1 times as tall as 3.three times the size of 4.less than half as heavy as 5.a third as wide as 6.twice as many as 7.five times the capacity of 8.170%as much as 9.ten times that of 10. not three times as tall as 高中|英语|外研版|必修1