初中英语、英语倍数表达法
初中英语语法——数词
即学即用：
1. The accident happened on___.
A. April 5, 2001
B. 2001, April 5
C. April 2001, 5
2. I was born ___.
A. in March 8, 1993
B. on July 9, 1994
C. on May, 1995
注意： four thousand of the students (学生中的四千人) four thousand students (四千学生)
twenties ⑵、 “几十”的复数形式 thirties forties 可以表示： fifties 几十多岁 ---sixties seventies “in + one‟s +整十的数词复数” eighties 年 代 ---nineties
“ in + the +整十的数词复数”
My parents are in their forties. It was in the 1960s/ in the 1960‟s In the nineties, most people go to work by bike.
⑶、基数词表示编码： Room 207 207房 Class 2，Grade 9 九年级二班 Page Five = the fifth page 第五页 Lesson One = the first lesson第一课 Bus No.3 = the No.3 bus 3号汽车 No. 1 Middle School 第一中学
a seven-day holiday = a seven days‟ holiday
have a two-week holiday（有两周的休假） = have a two weeks‟ holiday
初中英语语法-数词
数词数词是指表示数目多少或顺序先后的词。
表示数目多少的数词叫基数词，如one, five, ten, thirty, sixty-five 等；表示顺序先后的数词叫序数词，如first, sixth, tenth, twenty-first 等。
数词用法相当于名词和形容词，在句中可用作主语、宾语、表语、定语、同位语等。
数词与不定代词、冠词、指示代词、形容词性物主代词等被称作限定词。
4.1 基数词4.1.1 英语中没有“万”这个读数单位，要表示汉语中的“万”，英语需借用thousand一词，如“一万”用“十个千”表示(ten thousand)，“十万”用“一百个千”表示(one hundred thousand)。
4.2.2 用作基数词单位的hundred, thousand, million, billion 通常不带复数词尾-s，但若用于表示数百、数千、数百万这样的泛指，则用复数。
如：About two thousand people died in the earthquake. 大约有两千人在地震中丧生。
Thousands of people go to the seaside every year. 每年成千上万的人到海滨去。
4.1.3 表示整十的基数词用复数形式可以表示人的大约岁数或年代。
如：He is in his early twenties. 他才二十出头。
This took place in the 1930s. 这事发生在20世纪30年代。
4.1.4 基数词的读写方法（1）三位数的读写法：个位与十位之间用连字符“-”；百位与十位之间加and；十位为零时也要加and。
如：365读作three hundred and six-five605读作six hundred and five（2）大于三位数的读写法：从个位起每三位打一个撇号“，”，第一个撇号读thousand，第二个撇号读million，各撇号之间的数按三位及三位以下的数的读法读。
副词原级(50题 含答案解析)初中英语专题练习
副词原级（50题含答案解析）初中英语专题练习一、单项选择1．Liu Ying is good at singing. She sings _________ the famous singer.A．as well as B．as good as C．as better as2．The students ran to the swimming pool as _______ as they can.A．quickly B．quick C．more quickly D．quicker 3．Lucy does her homework ________ Lily. They are both good students.A．so carefully as B．so careful as C．as carefully as D．as careful as 4．—Does your brother play the piano as ______ as you, Bob?—Yes, and we both began to learn it at the age of 5.A．good B．well C．best5．Mike does his homework as ________ as his brother. He is the top student in my class.A．the most carefully B．most carefully C．more carefullyD．carefully6．—Lucy, I’m poor in English. Could you give me some advice?—You can speak English as __________ as possible.A．much B．many C．more D．most 7．Please write as _________ as possible.A．careful B．more careful C．carefully D．more carefully 8．Betty is only ten years old, but she can play table tennis _______ her P.E. teacher.A．so good as B．as good as C．as well as D．as better as 9．Though Jack is young, he can play the violin ________ his elder brother.A．not as well as B．as good as C．as well as10．The little girl is drawing a picture as ______ as her brother.A．careful B．more careful C．carefully D．more carefully 11．—Does Cathy run as ________ as Tina?—Yes, she does.A．faster B．faster C．fast D．the fastest 12．The local guide spoke ________ he could to make the visitors understand him.A．as clearly as B．as quietly as C．so clearly as13．Now he can speak English ________ his English teacher.A．as good as B．as better as C．as many as D．as well as 14．—Michael has the English class ________ Darren.—Right. They are both good students in my class.A．as carefully as B．more carefully than C．the most carefully 15．Taking a plane from Panzhihua to Chengdu costs ________ taking a high-speed train.A．three times more B．three times as much asC．as much as three times D．as much three times as16．The volunteer spoke as ________ as she could to make us understand her.A．clearly B．more clearly C．most clearly D．the most clearly 17．Researchers say the new material will not break as _______ as the old one.A．easy B．easier C．easily D．more easily18．I can’t play games with my friends ________ before, because I have too much homework to do.A．as many as B．as good as C．as often as D．as free as 19．I’m running as ________ as I can. However, I’m still behind the others.A．fast B．faster C．the fastest20．—I think that Harry writes as ________ as Betty.—So he does.A．more careful B．more carefully C．careful D．carefully 21．The exam is important. You should write as ________ as possible.A．more carefully B．more careful C．carefully D．careful22．I will work ________ I can to make my dream come true.A．so hardly as B．as hard as C．as hardly as D．so hard as 23．You’d better practice speaking as ________ as possible after class.A．more B．much C．many D．most 24．—Peter failed his math test! I can’t believe it!—That’s true. He didn’t check his test paper _________ before.A．as careful as B．so careful as C．as carefully as D．so careless as 25．I think you can play volleyball ________ your sister, if not better than her.A．as well as B．as badly as C．as good as D．as bad as 26．Don’t believe the advertisement! My car doesn’t work ________ the advertisement shows.A．as good as B．so better as C．as well as D．so best as 27．He doesn’t write as _______ as you do.A．careful B．carefully C．more carefully 28．Nobody in Linda’s class can sing as ________ as her.A．well B．good C．better29．You speak English as ________ as Tom does.A．well B．good C．better30．—David won the men’s high jump again.—No surprise. Who else can jump ________ he does?A．as highly as B．as high as C．as more highly as D．as higher as二、用单词适当形式填空 20题1．The local guide spoke as (clear) as he could to make herself understood.2．My mother works as (hard) as my father.3．Lucy does her homework as as her sister does. (careful)4．I think Sally did as (good) as Lucy in the math competition.5．Our teachers often describe things as (clear) as they can.6．Can you imagine an AI actress can act as as real ones in TV series? (nature) 7．He ran as (fast) as he could to catch up with others.8．After communicating with the teacher, John works as (hard) as before.9．When an earthquake happens, and you are outdoors, you should keep calm and go to an open area as (quick) as possible.10．—Does Jim run as as David?—Yes, but Mike runs than them. (slow)11．We should speak as (polite) as possible when we ask strangers for help. 12．Millie has a talent for music. Nobody else in our class sings as as her.(beautiful) 13．He doesn’t do his homework as (careful) as his sister.14．I think Sally did as (good) as Lucy in the competition.15．Q: Tina work Tara?A: No, she doesn’t. She works than Tara. (hard)16．Mark speaks English as （clear）as his classmate Tim.17．You must do the work as as you can. (careful)18．You didn’t write as （care）as Kate did. That’s why she got better grades. 19．You must drive as as possible especially on rainy days. (safe)20．Susan doesn’t speak English as (well) as Anna, but her handwriting is excellent.参考答案：一、单项选择1．A【详解】句意：刘英擅长唱歌。
初中英语中考常用九类词性的定义及归纳
初中常用的9类词性的定义及归纳词类又叫词性，英语单词根据其在句子中的功用，可以分成十个大类。
1.名词noun n. student 学生2.代词pronoun pron. you 你3.形容词adjective adj. happy 高兴的4.副词adverb adv. quickly 迅速地5.动词verb v. cut 砍、割6.数词numeral num. three 三7.冠词article art. a 一个8.介词preposition prep. at 在...9.连词conjunction conj. and 和10.感叹词interjection interj. oh 哦前六类叫实词（能够单独充当句法成分，有词汇意义和语法意义的是实词），后四类叫虚词（不能充当句法成分，没有词汇意义只有语法意义）。
一、名词1.名词复数的规则变化2.名词的格在英语中有些名词可以加“’s”来表示所有关系，带这种词尾的名词形式称为该名词的所有格，如：a teacher’s book。
3.名词所有格的规则如下：1）单数名词词尾加“’s”，复数名词词尾没有s，也要加“’s”，如the boy’s bag 男孩的书包，men’s room 男厕所。
2）若名词已有复数词尾-s ，只加“’”，如：the workers’ struggle工人的斗争。
二、代词大多数代词具有名词和形容词的功能。
英语中的代词，按其意义、特征及在句中的作用分为：人称代词、物主代词、指示代词、反身代词、相互代词、疑问代词、关系代词、连接代词和不定代词九种。
1.人称代词的用法：I saw her with them，at least，I thought it was her.我看到她和他们在一起，至少我认为是她。
（her做宾语，them做介词宾语，her作主补）a. -- Who broke the vase？--谁打碎了花瓶？b. -- Me.--我。
英语中倍数的表达
1. 倍数+as+形容词或副词的原级+as+其它。
这种结构又常演变成下列两类：①倍数+as+many+可数名词复数+as;②倍数+as+much+不可数名词+as。
如：There are seven times as many people as I expected.是我预料的人数的七倍。
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+形容词（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. 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. 新扩建的广场为以前的四倍大。
4. 倍数+what从句。
如：The production is now three times what it was ten years ago.现在的产量是十年前的三倍。
5. 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。
6. 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.与去年相比，该单位职工的收入已增加了50%。
He runs faster than me by three times.他跑得比我快三倍。
中考英语语法数词
中考英语语法数词要给成功找方法，不给失败找理由。
不抛弃，不言弃，冷静冷静。
海阔凭鱼跃，天高任鸟飞。
摒弃侥幸之念，必取百炼成钢。
下面是作者给大家带来的中考英语语法数词，欢迎大家浏览参考，我们一起来看看吧!英语语法:数词数词表示数目多少或顺序多少的词叫数词，数词分为基数词和序数词。
表示数目多少的数词叫基数词;表示顺序的数词叫序数词。
一、基数词1.基数词写法和读法： 345 three hundred and forty-five;2.基数词一样是单数情势，但下列情形，常用复数：1.) 与of 短语连用，表示概数，不能与具体数目连用，如hundreds of;2.)表示几十岁 in his forties3.)表示年代，用 in +the +数词复数;in the 1980s / 1980’s二、序数词1.)序数词的不规则变化及缩写情势： first---1st second---2nd third-3rd fifth-5th ninth twelfth twentieth twenty-first----21st2.)序数词前通常使用定冠词the，但有时使用不定冠词a, an,表示“又一，再一”Try it again, please.请再试一次。
When I sat down a third man came in.三、数词的用法1.倍数表示法1.) 主语+谓语+倍数(或分数)+ as + adj. + asI have three times as many as you. 我有你三倍那么多。
2.) 主语+谓语+倍数(分数)+ the size (amount，length…) of…The earth is 49 times the size of the moon. 地球是月球的49倍。
3.) 主语+谓语+倍数(分数)+ 形容词(副词)比较级+ than…The grain output is 8 percent higher this year than that of last year.今年比去年食粮产量增加8%。
1初中英语—数词
初中英语—数词数词分为基数词和序数词两种。
表示数目或数量多少的词叫基数词；表示数目顺序的词叫序数词。
一. 基数词1）基数词写法和读法：one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty twenty-one thirty forty fifty sixty seventy eighty ninety hundred thousand million billion345 three hundred and forty-five；2）基数词一般是单数形式，具体数目+单数。
如：two thousand, seven thousand 但下列情况，常用复数：a. 表示不确的数目hundred thousand million billion后加s与of 短语连用，如：thousandsof ;millions of 表示概数，不能与具体数目连用，如scores of people 指许多人；b. 在一些表示"一排"或"一组"的词组里；如：They arrived in twos and threes. 他们三三两两的到达了。
c. 表示"几十岁"；30—thirties, 50s--fiftiesd. 表示"年代"，用 in +the +数词复数；in the 1990s(1990--1999)e. 在乘法运算的一种表示法里，如：3 x 5 = 15 , Three fives is (are) fifteen.1. 基数词就注意以下几点：（1）几十几的基数词的十位数与个位数之间要用连字符“-”连接。
如：eighty-five 85twenty-six 26（2）三位数的基数词须在百位和十位（若无十位则和个位）之间用and连接。
初中英语比较级和最高级的用法
英语语法 --- 比拟级和最高级的用法在英语中通常用以下方式表示的词: 在形容词或副词前加more( 如 more natural,more clearly ) 或加后缀 -er(newer,sooner ) 。
典型的是指形容词或副词所表示的质、量或关系的增加。
英语句子中，将比拟两个主体的方法叫做“比拟句型〞。
其中，像“A 比 B 更⋯⋯〞的表达方式称为比拟级；而“A 最⋯⋯〞的表达方式那么称为最高级。
组成句子的方式是将形容词或副词变化成比拟级或最高级的形态。
一、形容词、副词的比拟级和最高级的构成规那么1．一般单音节词和少数以 -er ，-ow 结尾的双音节词，比拟级在后面加 -er ，最高级在后面加 -est ；〔1〕单音节词如： small →smaller →smallest short →shorter →shortesttall →taller →tallest great →greater →greatest〔2〕双音节词如： clever →cleverer →cleverest narrow →narrower →narrowest2．以不发音 e 结尾的单音节词，比拟在原级后加 -r ，最高级在原级后加 -st ；如：large →larger →largest nice →nicer →nicest able →abler →ablest 3．在重读闭音节〔即：辅音＋元音＋辅音〕中，先双写末尾的辅音字母，比拟级加 -er ，最高级加 -est ；如： big →bigger →biggest hot →hotter →hottest fat →fatter →fattest 4．以“辅音字母＋ y〞结尾的双音节词，把 y 改为 i ，比拟级加 -er ，最高级加 -est ；如： easy→easier →easiest heavy →heavier →heaviestbusy→busier →busiest happy →happier →happiest5．其他双音节词和多音节词，比拟级在前面加more，最高级在前面加most；如： beautiful →more beautiful →most beautifuldifferent →more different →most different easily→more easily →most easily注意：〔1〕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。
【英语】数词知识点总结
【英语】数词知识点总结一、初中英语数词1．Americans eat vegetables per person today as they did in 1910.A. more than twiceB. as twice as manyC. twice as many asD. more than twice as many【答案】 D【解析】【分析】句意：美国人现在每个人吃蔬菜的比1910年的两倍还多。
more than twice，表示数量，放在as … as结构前，是……的两倍多，故选D。
【点评】考查倍数的表达方式。
2．—Do you know the boy is sitting next to Peter？—Yes. He is Peter's friend. They are celebrating his birthday.A. who; ninthB. that; nineC. which; ninth【答案】 A【解析】【分析】句意：——你知道那个坐在彼得旁边的男孩吗?——是的。
他是彼得的朋友。
他们正在庆祝他的九岁生日。
分析句子结构可知，第一空所在句子是定语从句，先行词是人，连接词在从句中作主语，所以应该用who/that引导，which连接定语从句时先行词应该是物，故排除C；nine九，基数词；ninth第九，序数词；第二空根据空后的birthday为名词单数可知，此处需要序数词，表示某人几岁生日应该用序数词表示第几个生日，故选A。
【点评】考查定语从句的连接词的辨析和序数词。
注意区别定语从句的连接词的使用原则，理解单词词义。
3．Every year, ________ books are given away to the poor children in the countryside. A. thousand B. thousands of C. thousand of【答案】 B【解析】【分析】句意：每年上千本书被捐给农村的贫困孩子们。
新标准初中英语语法-数词
新标准初中英语语法--数词1 数词概述与分类数词是表示数目多少或顺序先后的词。
表示数目多少的数词称为基数词，例如one，two，three等；表示顺序先后的数词称为序数词，例如first，second，third等。
2 特殊数词及数词的几种特殊用法2.1 数词的构成数词的构成有一定的规律，但在规律之中又有特殊的情况。
对于发生如下变化的基数词和序数词应该对照记住，尤其是标有∗者。
2.2 基数词的读写（1）基数词从1至12是独立的单词。
从13至19加后缀-teen。
“几十”要加后缀-ty。
“几十几”要在十位数与个位数之间用连字符“-”相连接。
百位以上的数只在百位与十位之间加连词and。
（2）数词在句中一律强读。
特别是后缀-teen一定要重读。
（3）读1 000以上的数词时，要先把数字以半字空分段，倒数每三位前留半字空。
倒数第一个“空”前为千位，第二个“空”前为百万位。
8 001 eight thousand and one31 000 thirty-one thousand2400 000 two million four hundred thousand（4）hundred，thousand，million前面可用a，也可用one。
用a时暗含不强调数目的意味。
如用one，常含有与two，three等数字相比的意味。
hundred，thousand，million等数词前加基数词或表示数量的形容词时，通常不能用复数形式。
但是如果表示模糊的数量（概数）时，要加上-s后接of短语。
Our company has a total staff of eight hundred.我们公司共有员工800人。
I have two thousand US dollars.我有2 000美元。
He has read thousands of books.他读过的书数以千计。
Thousands of people were killed in the earthquake.数以千计的人在地震中丧生。
初中英语语法(完整版)
第一讲名词1.1名词的分类名词可以分为专有名词（Proper Nouns）和普通名词(Common Nouns），专有名词是某个（些）人，地方，机构等专有的名称，如Beijing，China等。
普通名词是一类人或东西或是一个抽象概念的名词，如：book，sadness等。
普通名词又可分为下面四类：1）个体名词（Individual Nouns）：表示某类人或东西中的个体，如：gun。
2）集体名词（Collective Nouns）：表示若干个个体组成的集合体，如：family。
3）物质名词（Material Nouns）：表示无法分为个体的实物，如：air。
4）抽象名词（Abstract Nouns）：表示动作、状态、品质、感情等抽象概念，如：work。
个体名词和集体名词可以用数目来计算，称为可数名词（Countable Nouns），物质名词和抽象名词一般无法用数目计算，称为不可数名词（Uncountable Nouns）。
归纳表格如下||专有名词||| 名|| 个体名词|||||------------| 可数名词|||| 集体名词||||普通名词|||| 词|| 物质名词|||||------------| 不可数名词|||| 抽象名词||) 以y 1结尾的专有名词，或元音字母+y 结尾的名词变复数时，直接加s变复数：如：two Marys the Henrysmonkey---monkeys holiday---holidays比较：层楼：storey ---storeys story---stories2) 以o 结尾的名词，变复数时：a. 加s，如：photo---photos piano---pianosradio---radios zoo---zoos；b. 加es，如：potato--potatoes tomato--tomatoesc. 均可，如：zero---zeros / zeroes3) 以f或fe 结尾的名词变复数时：a. 加s，如：belief---beliefs roof---roofssafe---safes gulf---gulfs；b. 去f,fe 加ves，如：half---halvesknife---knives leaf---leaves wolf---wolveswife---wives life---lives thief---thieves；c. 均可,如：handkerchief:handkerchiefs / handkerchieves名词复数的不规则变化1）child---children foot---feet tooth---teethmouse---mice man---men woman---women注意：与man 和woman构成的合成词，其复数形式也是-men 和-women。
初中英语的十大词性分类及其用法
初中英语的十大词性分类及其用法英语语法最基础的就是词性了！因为后续的各种时态变化、从句很多的考点都是结合词性才产生的！要想学好语法，那就一定要打牢词性这个基础！一、词性的分类词类又叫词性，英语单词根据其在句子中的功用，可以分成十个大类。
1.名词noun n. student 学生2.代词pronoun pron. you 你3.形容词adjective adj. happy 高兴的4.副词adverb adv. quickly 迅速地5.动词verb v. cut 砍、割6.数词numeral num. three 三7.冠词article art. a 一个8.介词preposition prep. at 在...9.连词conjunction conj. and 和10.感叹词interjection interj. oh 哦前六类叫实词，后四类叫虚词。
二、名词名词复数的规则变化名词的所有格在英语中有些名词可以加“‘s”来表示所有关系，带这种词尾的名词形式称为该名词的所有格，如：a teacher’s book。
名词所有格的规则如下：1）单数名词词尾加“'s”，复数名词词尾没有s，也要加“'s”，如the boy‘s bag 男孩的书包，men’s room 男厕所。
2）若名词已有复数词尾-s ，只加“'”，如：the workers’ struggle工人的斗争。
三、代词大多数代词具有名词和形容词的功能。
英语中的代词，按其意义、特征及在句中的作用分为：人称代词、物主代词、指示代词、反身代词、相互代词、疑问代词、关系代词、连接代词和不定代词九种人称代词的用法：I saw her with them，at least，I thought it was her.我看到她和他们在一起，至少我认为是她。
（her做宾语，them做介词宾语，her作主补）a. -- Who broke the vase？--谁打碎了花瓶？b. -- Me.--我。
初中英语语法 三种倍数的表达方式课件
倍数的表达方式
1. A is three times as big as B. 2. A is three times bigger than B. 3. A is three times the size of B.
three times
four times
A 是 B的 3倍大
1. A is three times as big as B.
2. A is three times bigger than B.
3. A is three times the size of B.
A 是 B的 3倍大
1. This room is three times as big
as tall as that elephant.
这只长颈鹿比 那只大象高3倍 This giraffe is three times
taller than that elephant.
这只长颈鹿比 那只大象高3倍
This giraffe is three times
the height of that one.
as that one.
A 是 B的 3倍大
2. This room is three times bigger
than that one.
A 是 B的 3倍大
3. This room is three times the size
of that one.
这只狗比那只狗 小2倍
This dog is twice as small
这边的水比那 边的水深6倍
初中英语语法十大词类复习全攻略：--数词
学习爱上问学堂——中国领先的教育B2C 平台。
初中英语语法初中英语语法十大词类复习全攻略十大词类复习全攻略十大词类复习全攻略：：----数词数词2.6数词表示数目多少或顺序多少的词叫数词，数词分为基数词和序数词。
表示数目多少的数词叫基数词；表示顺序的数词叫序数词。
一、基数词1）基数词写法和读法：345three hundred and forty-five ；2）基数词一般是单数形式，但下列情况，常用复数：a.与of 短语连用，表示概数，不能与具体数目连用，如scores of people 指许多人；b.在一些表示"一排"或"一组"的词组里；如：They arrived in twos and threes.他们三三两两的到达了。
c.表示"几十岁"；d.表示"年代"，用in +the +数词复数；e.在乘法运算的一种表示法里，如：3x 5=15Three fives is (are)fifteen.二、序数词序数词的缩写形式：first---1st second---2nd thirty-first---31st三、数词的用法1）倍数表示法a.主语+谓语+倍数（或分数）+as +adj.+asI have three times as many as you.我有你三倍那么多。
b.主语+谓语+倍数（分数）+the size (amount ，length …)of …The earth is 49times the size of the moon.地球是月球的49倍。
c.主语+谓语+倍数（分数）+形容词（副词）比较级+than …The grain output is 8percent higher this year than that of last year.今年比去年粮食产量增加8%。
学习爱上问学堂——中国领先的教育B2C平台。
初中英语语法之-形容词和副词的比较级和最高级
形容词和副词的比较级和最高级一、形容词的比较级和最高级: 形容词的比较级和最高级形式是在形容词的原级形式的基础上变化的。
分为规则变化和不规则变化。
1】规则变化如下:1)单音节形容词的比较级和最高级形式是在词尾加 -er 和 -est 构成。
Great2) 以 -e 结尾的单音节形容词的比较级和最高级是在词尾加 -r 和 -st 。
wide3)少数以-y, -er, -ow, -ble结尾的双音节形容词的比较级和最高级是在词尾加-er 和-est 构成。
Clever4)以 -y 结尾,但 -y 前是辅音字母的形容词的比较级和最高级是把 -y 去掉,加上-ier 和-est 构成. happy5) 以一个辅音字母结尾其前面的元音字母发短元音的形容词的比较级和最高级是双写该辅音字母然后再加-er和-est。
big6)双音节和多音节形容词的比较级和最高级需用more 和 most 加在形容词前面来构成。
beautiful difficult2】常用的不规则变化的形容词的比较级和最高级:原级------比较级------最高级good------better------bestmany------more------mostmuch------more------mostbad------worse------worstfar------farther, further------farthest, furthest形容词前如加 less 和 least 则表示"较不"和"最不"important 重要 less important 较不重要 least important 最不重要3】形容词比较级的用法:形容词的比较级用于两个人或事物的比较,其结构形式如下:主语+谓语(系动词)+ 形容词比较级+than+ 对比成分。
也就是, 含有形容词比较级的主句+than+从句。
表示倍数的几种表达法英语
表示倍数的几种表达法英语表达倍数时，两倍用twice/double, 三倍以上用基数词+times,常见的表达方式如下：1.倍数+as…as型例如：We have produced three times as many computers as we did last year.我们生产的计算机是去年的三倍多。
2. 倍数+the size of 型例如：China is almost five times the size of Mexico in area.在面积上，中国几乎是墨西哥的五倍大。
3. 倍数+what从句例如：The length of the road is twice what it was three years ago.这条路是三年前的两倍长。
4. 倍数+比较级+than例如：I am twice older than you. 我的年龄是你年龄的两倍。
5. 比较级+ than…+ by+倍数例如：The line is longer than that one by twice.这根绳子比那根长两倍。
6. 习题巩固1. Americans eat ________ apples per person today as they did in 1960.A. more than twiceB. as twice as manyC. twice as many asD. more than twice as many2. Paper produced every year is _______ the world's production of vehicles.A. the three weight ofB. three times the weight ofC. as three times heavy asD. three times as heavier as3. With the help of the German experts，the factory produced ______ cars in 1996 as the year before.A. as twice manyB. as many twiceC. twice as manyD. twice many as4. This ship measures ________ that one.A. as twice as longB. as twice long asC. twice long asD. twice as long as5. After the new technique was introduced, the factory produced _______ tractors in 1890 as the year before.A. as twice manyB. as many asC. as twice as manyD. twice as many答案：D B C D D。
八年级英语数词讲解例题解析
八年级英语数词讲解例题解析八年级英语数词讲解例题解析一份信心，一份努力，一份成功;十分信心，十分努力，十分成功。
今天店铺为大家带来了八年级英语数词讲解例题解析，更多精彩内容请关注店铺。
初中英语语法梳理和提高——数词讲解例题解析数词英语数词表示数目或者顺序，可分为基数词和序数词。
基数词表示数量，序数词表示顺序。
知识梳理：提纲挈领，抓住重点和难点!一、基数词的构成1.1-12的基数词是独立的单词，即： one，two，three，four，five，six，seven，eight， nine，ten，eleven，twelve。
2.13-19的基数词以-teen结尾。
如： fourteen，seventeen等，但13，15，18较特殊， 13-thirteen 15-fifteen 18-eighteen。
3.20-90的整十位均以-ty结尾。
如：sixty，ninety，但20，30，40，50，80较特殊，20-twenty 30-thirty 40-forty 50-fifty 80-eighty。
4.十位数与个位数之间要加连字符号"-"，如：28-twenty-eight，96-ninety-six。
5.百位和十位(若无十位则和个位)之间加and，如：148-one hundred and forty-eight 406-four hundred and six。
6.hundred(百)，thousand(千)，million(百万)，billion(十亿)等前面即使有具体的数词，也不能在它们的后面加s。
如：600-six hundred，8百万-eight million。
7.1000以上的数字，从后往前数每三位加一个逗号"，"第一个逗号前为千(thousand)，第二个逗号前为百万(million)，第三个逗号前为billion(十亿)。
英语中无"万"这个词，我们可以用"几十个千(thousand)"表示几万，"几百个千(thousand)"表示"几十万"。
初中英语语法学习：分数、倍数、小数和百分数表示法
初中英语语法学习：分数、倍数、小数和百分数表示法分数、倍数、小数和百分数表示法一、分数的表示法分数由基数词和序数构成——分子用基数词，分母用序数，分子超过“1”时，分母用复数：a [one] sixth(1/6), two thirds(2/3), three fifths()3/5)【说明】(1) 1/2 通常读作 a [one] half，一般不读作a second。
2. 1/4 可读作 a [one] fourth，也可读作 a [one] quarter。
3. 分子超过“1”分母之所以用复数能够这样理解：“三分之二”即两个(two)三分之一(third)，既然是两个“三分之一”，那“三分之一”当然要用复数，即用thirds。
4. 在数学上，为了简洁起见，分子和分母均可用基数词，其间用介词over：3/4 读作three over four(对于比较复杂的分数通常采用此读法)5. 带分数的读法：在整数与分数之间用and连接：five and two thirds二、倍数的表示法表示倍数时通常借助half, double, twice, three times等之类的词：Half (of) the apples are bad. 一半苹果是坏的。
His homework is not yet half done. 他的作业还没完成一半。
He eats twice what I eat. 他的食量是我的两倍。
比较以下三句，虽然表达形式不同，但含义相同：1. This rope is three times as long as that one. 这根绳子是那根的三倍长。
2. This rope is three times longer than that one. 这根绳子是那根的三倍长。
3. This rope is three times the length of that one. 这根绳子是那根的三倍长。
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英语倍数表达法
袁征
英语表示倍数增减或倍数对比的句型多种多样，其中有一些很容易译错——其主要原因在于：英汉两语在表述或对比倍数方面存在着语言与思维差异。
现将常
用的英语倍数句型及其正确译法归纳如下：
倍数增加
(一) A is n times as great（long，much，…）as B.（①）
A is n times greater （longer，more，…）than B.（②）
A is n times the size （length，amount，…）of
B.(③)
以上三句都应译为；A的大小（长度，数量，……）是B的n倍[或A比B大（长，多，……）n-1倍].
This book is three times as long as （three
times longer than，three times the length of ）that one.
这本书的篇幅是那本书的3倍（即长两倍）。
注：当相比的对象B很明显时，than（as，of）B常被省去。
（二）increase to n times（④）
increase n times／n-fold（⑤）
increase by n times（⑥）
increase by a factor of n（⑦）
以上四式均应译为：增加到n倍（或：增加n-1倍）。
The production of integrated circuits has
been increased to three times as compared with last year.
集成电路的产量比去年增加了两倍。
The output of chemical fertilizer has been
raised five times as against l986．
化肥产量比1986年增加了4倍。
That can increase metabolic rates by two
or three times.
那可使代谢率提高到原来的2倍或3倍（即提高1倍或2倍）。
The drain voltage has been increased by a
factor of four.
漏电压增加了3借（即增加到原来的4倍）。
注：在这类句型中increase常被raise，grow，go/step
up，multiply等词所替代。
（三）There is a n-fold increase/growth…（⑧）
应译为：增加n-倍（或增至n倍）。
这个句型还有其它一些形式：
A record high increase in value of four
times was reported.
据报道,价值破记录地增长了3倍。
（四）double (增加1倍），treble（增加2倍），quadruple（增加3倍）。
(⑨)
The efficiency of the machines has been
more than trebled or quadrupled．
这些机器的效率已提高了2倍或3倍多。
（五）此外，英语中还有一种用again而不用倍数词来比较倍数的方法，如：
A is as much （large，long，…）again as B.（= A is
twice as much （large，long，…）as B.
应译为：A比B多（大，长，……）1倍。
A is half as much （large，1ong，…)again as B.
【= A is one and a half times as much （large，
1ong，…）as B.】（11）
应译为:A比B多（大，长……）一半（即A是B的一倍半）。
倍数减少
（一）A is n times as small （light，slow，…）as B.（12）
A is n times smaller （lighter，slower，…) than
B.（13）
以上两句均应译为：A的大小（重量，速度，……）是B的1/n[或A比B小（轻，慢，……）（n-1）/n]。
The hydrogen atom is near1y l6 times as
light as the oxygen atom.
氢原子的重量约为氧原子的1/16（即比氧原子约轻15/16）。
This sort of membrane is twice thinner than
ordinary paper.
这种薄膜比普通纸张要薄一半（即是普通纸厚度的1/2）。
注：当相比的对象B很明显时，than/as B常被省去。
（二）decrease n times/n--fold （14）
decrease by n times（15）
decrease by a factor of n（16）
以上三式均译为：减少到1/n[或：减少(n-1)/n]。
decrease常被reduce，shorten，go／slow down等词替代。
Switching time of the new-type transistor
is shortened 3 times.
新型晶体管的开关时间缩短了1/3（即缩短到2/3）。
When the voltage is stepped up by ten
times，the strength of the current is stepped down by
ten times.
电压升高9倍，电流强度便降低9/10（即90％）。
The equipment reduced the error
probability by a factor of 5.
该设备误差概率降低了4/5。
（三）There is a n-fold decrease/reduction…
应译为：减至1/n [或：减少
（17）这个句型还有其它一些形式，
A rapid decrease by a factor of 7 was observed．
发现迅速减少到1/7。
he principal advantage of the products is a two-fold reduction in weight.
这些产品的主要优点是重量减轻了1/2。
从上列倍数增减句型及其译法中不难看出：与汉语不同的是，英语在表述或比较倍数时，无论使用什么句
型（除了不含倍数词的again句型外）都包括基础倍
数在内，因此都不是净增或净减n倍，而是净增或净减n-1倍。
所以句型⑤、③表示的倍数增量=句型④；
句型(13)表示的倍数比差＝句型12，且decrease（by） 3
times应译为“减少2/3”，而不是“减少3/4”。