(完整版)倍数表达法和比较等级

比较级与最高级及倍数表达方式标准化管理处编码[BBX968T-XBB8968-NNJ668-MM9N]比较级与最高级、倍数表达方式一、词的变化规则1）规则变化2) 不规则变化3）more + 形容词/副词原级二、基本结构比较级形容词或副词+thanYou are taller than I.He is the tallest in his class.可修饰比较级的词1）a bit, a little, rather, much, far, by far, many, a lot, lots, a great deal, any, still, even等2）还可以用表示倍数的词或度量名词作修饰语。

3）以上词(除by far)外，必须置于比较级形容词或副词的前面。

典型例题:1）---- Are you feeling ____---- Yes，I'm fine now.A. any wellB. any betterC. quite goodD. quite better2）The experiment was____ easier than we had expected.A.moreB.much moreC.muchD.more much3）If there were no examinations, we should have ___ at school.A. the happiest timeB. a more happier timeC. much happiest timeD.a much happier time the+最高级+比较范围1) The Sahara is the biggest desert in the world.形容词最高级前通常必须用定冠词 the，副词最高级前可不用。

形容词most前面没有the，不表示最高级的含义，只表示"非常"。

倍数表达法是历届高考的热点.当我们要表达甲是乙的几倍时，通常可使用以下句型：之杨若古兰创作1.倍数+as+描述词或副词的原级+as+其它.这类结构又常演酿成以下两类：①倍数+as+many+可数名词复数+as;②倍数+as+much+不成数名词+as.如：There are seven times as many people as I expected.是我意料的人数的七倍.There is five times as much coffee in this glass as in that one.这个杯子里的咖啡是那个杯子里的五倍.2.倍数+描述词（或副词）的比较级+ than+其它.如：The hall is five times bigger than our classroom.这个大厅的面积比我们教师大五倍.3.倍数+the size/height/length/width.etc.+of+其它.如：This road is six times the length of that one.这条路是那条路的六倍长.4.计量名词+of+名词+be+倍数+that+of+其它.如：The size of the newly broadened square is four times that of the previous one.新扩建的广场为之前的四倍大.5.倍数+what从句.如：The production is now three times what it was ten years ago.此刻的产量是十年前的三倍.6.倍数+more+名词+than+其它.如：There are nine times more books in his bag than in yours.他书包里的书比你书包里的书多九倍.7.其它表达.如：She's twice/double my age.她的年龄是我的两倍.The average income of the staff has been increased by 50 percent compared with last year.与去年比拟，该单位职工的收入已添加了50%.He runs faster than me by three times.他跑得比我快三倍. {考查方向}1）倍数在句中的地位普通放在第一个as前面或比较级前面或名词前面.2）用times暗示倍数时，普通只限于暗示包含基数在内的三倍或三倍以上的数.暗示两倍可以用twice或double,一倍用once.【重点归纳】除了我们初中所学的描述词的比较级的用法，本模块我们次要归纳几种句式结构：（一）含倍数的比较句型1.倍数+as+描述词原级+as….如：This bridge is three times as long as that one.His room is twice as big as mine;in other words,mine is only half as big as his.【特别提醒】“as…as”两头加入名词的句式：●倍数+as+描述词+a/an+可数名词单数+as…●倍数+as+描述词+可数名词复数/不成数名词+as….如：Last year my brother twice as big a new house as mine.He has collected more than three times as many stamps as I (have).I spent twice as much time on my studies as you did.【难点点拨】该结构的省略：通常省略描述词后面的名词及比较的部分.如：I have to transfer(转乘）buses so I spend twice as much (money as others)for the bus every day.2.倍数+描述词比较级+than….如：This street is four times shorter than that one.Fear of danger is ten thousand times more terrifying than danger itself.【特别提醒】倍数+描述词比较级+名词+than….如：He earns five times more money now than he did ten years ago. There are three times more books in our library than in yours. 3.倍数+the+名词（如size,height,weight,length,width,depth 等）+of….如：This well is three times the depth of that one.4.另外，请留意上面两种说法：（1）倍数+what从句.如：The length of the road is four times what it was three years ago.(2)倍数+that of+被比较对象.如：Airmail charges almost twice or three times that of a normal mail. (二）其它句式1."比较级+and+比较级"暗示"愈来愈…".如：Things are getting better and better every day.Our country is becoming more and more beautiful.2."the+比较级…，the+比较级…"暗示“越…，就越…”.如：The more you have, the more you want.The more a man knows, the less he knows he knows.【常识扩展】在描述词比较级前可以加a little,a bit,alot,no,any,much,far,even,still等副词（组暗示程度的加深.如：The result is much better than we expected.Actually,health is far more important than wealth.。

英语倍数表达法五种
1.倍增法：倍增法是一种快速求解指数幂的方法。

例如，2的8次方可以通过2的4次方乘以2的4次方得到。

同样的，2的16次方可以通过2的8次方乘以2的8次方得到，依次类推。

这种方法的时间复杂度为O(log n)，比循环求解指数幂的时间复杂度O(n)更快。

2.倍数表达法：倍数表达法是用倍数来表示一个数的方法。

例如，假设要表示12，可以表示为2×2×3。

这种方法在分解质因数、求最小公倍数等问题中非常有用。

3.倍数比较法：倍数比较法是一种比较两个数大小的方法。

例如，如果要比较24和36的大小，可以先将它们分解为2×2×2×3和2×2×3×3，然后比较它们的倍数，即8和9，由此得出36比24大。

4.倍数逼近法：倍数逼近法是一种求解近似值的方法。

例如，要求出π的近似值，可以用倍数逼近法将π表示为3.1415926×10000000÷31415926，从而得出π的近似值为3.141592。

5.倍数关系法：倍数关系法是一种求解倍数关系的方法。

例如，如果要求解24和36的最小公倍数，可以用倍数关系法将它们表示为2×2×2×3和2×2×3×3，然后取它们的公共倍数，即2×2×2×3×3=72，得出24和36的最小公倍数为72。

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倍数表达法及比较级，最高级两倍：twice 三/四/五倍：three/four/five times注意：以下10结构中的倍数也可换成分数或百分数：如：one-third 三分之一； two-thirds 三分之二；80 percent 百分之八十。

1. A+谓语V+倍数+as+adj/adv原级+as+B2. A+谓语V+倍数+adj/adv比较级+than+B3. A+谓语V+倍数+the+计量名词(size/weight/length/height--)+of+B4. The+计量名词+of+A+be+倍数+that+of+B5. --------------倍数+what从句6. --------------倍数+that+of+B7. --------------倍数+as+many/much+名词复数/U+as+B 8. --------------倍数+more+名词复数/U+than+B 9. --------------倍数+compared with B10. --------------倍数+形容词性物主代词+nEg. 1.This stick is three times as long as that one.这个棍子是那个的3倍长。

2. This stick is three times longer than that one.这个棍子比那个棍子长3倍。

3. This stick is three times the length of that one.这个棍子是那个棍子的3倍长。

4. The length of this stick is three times that of that one.这个棍子的长度是那个的3倍。

5. The output now is three times what it was ten yeas ago.现在的产量是十年前的3倍。

英语中“倍数”的常用表达方式一、用 times 表示倍数（一般限于包括基数在内三倍或三倍以上的数。

表示两倍的数，一般用 twice ）。

其句式有：1. “… times ＋形容词 / 副词的比较级＋than …”例如：This hall is five times bigger than our classroom.这个大厅比我们的教室大 5 倍。

2. “… times +as + 形容词 / 副词的原级＋as …”例如：This table is three times as long as that one.这张桌子是那张桌子的三倍长。

This dictionary is five times as thick as the one you borrowed from the library.这本词典的厚度是你从图书馆借的那本（厚度）的 5 倍。

3. “… times + the + 名词（如： size， height， weight，length， width 等）＋of …”例如：The earth is 49 times the size of the moon.地球的体积是月球的 49 倍。

This river is three times the depth of that one.这条河是那条河的三倍深。

4. “… times + more ＋名词＋than …”例如：He earns five times more money than he did ten years ago. 他现在挣的钱比十年前挣的多 5 倍。

There are twice more students in our class than in theirs. 我们班的学生人数比他们班多两倍。

5. “… times +as many （或 much ）＋名词＋as …”例如：We've produced twice as much cotton this year as（ we did ） ten years ago.今年我们生产的棉花比十年前多了一倍。

5种倍数表达法句型英语
以下是5 种倍数表达法句型英语：
1.倍数+as+形容词或副词原级+as：表示“……是……的几倍”。

e.g. This room is twice as big as that one. 这个房间是那个房间的两倍大。

2.倍数+形容词或副词比较级+than：表示“……比……大/多几倍”。

e.g. The new building is three times higher than the old one. 这座新楼比那座旧楼高三倍。

3.倍数+the size/height/length/width of：表示“……是……的几倍大小/高度/长度/宽度”。

e.g. The new bridge is four times the width of the old one. 这座新桥是那座旧桥的四倍宽。

4.倍数+what 引导的宾语从句：表示“……是……的几倍”。

e.g. The production of this factory is now three times what it was ten years ago. 这个工厂现在的产量是十年前的三倍。

5.倍数+名词短语：表示“……是……的几倍”。

e.g. He earns twice his sister's salary. 他的薪水是他妹妹的两倍。

英语表示倍数的几种方式用英语表示倍数的五种方法如果要用英语表示A是B的多少倍，可以考虑用以下方法：方法一：数字 + times + as + 原级 + as +比较对象It cost three times as much as I had expected. 它花的钱比我预期的多两倍。

Cats sleep twice as much as people. 猫睡觉的时间比人长一倍。

Unemployment among blacks was twice as high as that for white. 黑人的失业人数是白人的两倍。

New drivers have twice as many accidents as experienced drivers. 新驾驶人所出的事故是老驾驶人的两倍。

There is an entrance hall of perfect proportions, twice as long as it is wide. 有一处比例堪称完美的门廊，长是宽的两倍。

方法二：数字 + times + the size / length / depth / height / width / quantity / amount / etc+ of +比较对象Their house is twice the size of ours. 他们的房子是我们的两倍大。

The queen bee is twice the length of a worker bee. 蜂王的体长为工蜂的两倍。

Many are holding out for ten times the price. 许多人坚持索要10倍于该价格的价钱。

This room is twice the length of the other, but much narrower. 这个房间的长度是那个房间的两倍，但窄得多。

Concorde crosses the Atlantic at twice the speed of sound. 协和飞机以两倍于声速的速度飞越大西洋。

Lesson Seven Comparative & Superlative、倍数的表达(图表式作文)ComparisonsKey ConceptsComparisons indicate degrees of difference or similarity with adjectives and adverbs. So there are equal and unequal comparisons.1. Equal comparisonsHis car runs as fast as a race car. (adverb)They sing as well as we. (adverb)His job is not so / as difficult as mine. (adjective)Note:1) Sometimes we may see “so” instead of “as” before the adjective or adverb in negative comparison.Eg. He is not so tall as his father.2) Remember that subject form of the pronoun will always be used after “as” in standard English.Eg. You are as old as she.My house is of the same height as his.He speaks the same language as she.She takes the same course as her husband.Note:The opposite of “the same as” is “different from”.Eg. My nationality is different from yours.2. Unequal comparisonsThe following rules generally apply to unequal comparative structures:1) Add “-er”to the adjective base of most one- and two- syllable adjectives, eg. thick—thicker; soon—sooner.2) Use the form “more + adjective” for most three-syllable adjectives, eg. more beautiful; more important.3) Use the form “more + adjective” for adjectives ending in the following suffixes: -ed, -ful, -ing, -ish, -ous; eg. more useful; more boring; more cautious.4) When adding “-er”, double the final consonant of one-syllable adjectives which end I asingle consonant (except w, x, z) and are preceded by a single vowel, eg. big—bigger; hot—hotter.5) When an adjective ends in a consonant with “y”, change the “y” to “i” and add “-er”, eg. happy—happier; dry—drier.He speaks Spanish more fluently than I. (adv.)This chair is more beautiful than that one. (adj.)He visits his family less frequently than she does. (adv.)Unequal comparisons can be further intensified by adding “much”or “far”before the comparative form.Eg. A watermelon is much sweeter than a lemon.Harry’s watch is far more expensive than mine.Note: Nouns can also be used in comparisons. Be sure to use the determiner correctly depending on whether the adjectives are countable or uncountable.February has fewer days than March.He earns as much money as his brother.They have as few classes as we.Their job allows them less freedom than ours does.3. Illogical comparisonsAn illogical comparison is one in which unlike things have been compared. Be sure that the items being compared belong to the same category. These forms can be divided into three categories:1) possessives, 2) that of, 3) those ofEg. His drawings ar as perfect as his instructor. (×) (This sentence compares drawings with instructor.)His drawings are as perfect as his instructor’s. (√)The salary of a professor is higher than a secretary. (×) (This sentence compares salary with secretary.)The salary of a professor is higher than that of a secretary. (√)The duties of a policeman are more dangerous than a teacher. (×) (This sentence compares duties with teacher.)The duties of a policeman are more dangerous than those of a teacher. (√)4. Multiple number comparativesNumber multiples include: half, twice, three times, four times, etc. Study the following rule.Fred ate three times as many oysters as Barney.Jerome has half as many records now as I had last year.Note: It is incorrect to say: twice more than, etc.5. Double comparativesThese sentences begin with a comparative construction, and thus the second clause must also begin with a comparative.The bigger they are, the harder they fall.The sooner you take your medicine, the better you will feel.The more he rowed the boat, the farther away he got.The more he slept, the more irritable he became.描写说明文试题形式一般是给出一个或几个图画或图表。