高考语法复习：数词讲解及巩固提升练习
1．数词的定义
数词是表示数目多少或先后顺序的词，有基数词和序数词两种。
表数量的数词叫基数词，如one,two,three，...
表顺序的数词叫序数词，如first,cond,third,fourth,fifth，...
2．基数词构成
①1－12单独记
尼亚加拉瀑布one,two,three,four,five,six,ven,eight,nine,ten,eleven,twelve
②13－19词尾为teen：thirteen,fourteen,fifteen,sixteen,venteen,eighteen,nineteen
③20－90逢整十词尾为ty：twenty,thirty,forty,fifty，...
④21－99在十位数和个位数之间加连字符构成，如：
73ventythree,88eightyeight
3．序数词
(1)基数词变为序数词，记忆口诀
一二三要单独记：one→first,two→cond,three→third
th要从四加起：four→fourth,five→fifth，...
eight少个t：eight→eighth
nine去掉e：nine→ninth
ve用f来代替：five→fifth,twelve→twelfth佸伦短篇小说
ty变成tie：twenty→twentieth
表第“几十几”，基数加序数记心里：
twentyone→twentyfirst
(2)序数词的使用
本卷由系统自动生成，请仔细校对后使用，答案仅供参考。
①序数词在句中主要作定语，一般情况下序数词前要加定冠词。
Monday is the cond day of a week.星期一是一周的第二天。
②序数词前有时加不定冠词，表示“又一、再一”，相当于another。
Would you like a cond cup of tea?你还想再来一杯茶吗？
I had a fourth apple.我(吃了三个苹果后)又吃了一个苹果。
③first,cond等有时可表示一批人或物。
The first milu deer came from China in the1860s.
最早的麋鹿是在十九世纪六十年代来自中国的。
平衡的反义词
④有时序数词作状语，不加冠词。
He came out first in the contest.他在比赛中获得第一名。
⑤first,cond等在用来指“冠军、亚军”等获胜名次时也常不加冠词。
He is first.他是冠军。
4．百分数、分数、小数的构成及用法
(1)百分数：基数词加百分号%(percent):89%→eightynine percent
(2)分数：分子基数词，分母序数词。分子大于1，分母用复数。1/3:one third，2/5:two fifths
【技法点拨】
在语法填空中：
1．词性转换题：“句子成分”是关键
(1)如果要填的词在句中作主语、宾语或表语要考虑名词形式；
(2)如果要填的词被形容词、定冠词或形容词性物主代词所修饰，要考虑名词形式；
2．名词复数题：“牢记规则”辨是非
(1)如果空格处被the，veral，many和数词等修饰时，要考虑名词的复数形式；
蒙昧造句(2)如果一般现在时的谓语动词是动词原形或are，要考虑用名词的复数形式。
3．数词的复数形式前要注意基数词的应用；可数名词单数前要注意序数词的应用，序数词前通常有定冠词。
巩固提升：
一、单项选择
1．Asia,in the east of the world,is four times Europe. A．as large as B．he size of C．larger than D．as larger than
2．That multinational company is adopting an aggressive expanding strategy,and so far it has recruited________in the year of2015as they did two years ago.
本卷由系统自动生成，请仔细校对后使用，答案仅供参考。
马云传A．three times as many new employees B．three times many new employees
笑话大全爆笑图片C．three times as many as new employees D．three times more new employees than 3．India is a country with___________people.
A．the number of B．few C．a few D．a number of 4．More than___________people are crazy about the famous TV show Running Man. A．thousands of B．80thousand C．80thousand of D．80thousands
5．When the recorded data of the scandal about the president was collected,the length of tapes was ___________the Atlantic Ocean.
A．as deep as35times B．as35times deep as
C．35times the depth of D．35times the depth as
6．After a30year hull（平静）,the U.S.is once again being visited by hurricanes_______the ones that battered（重创）the Eastern aboard in the1940s,50s and60s.
A．the size of B．the size as C．of the size as D．as the size of
壶关太行山大峡谷
7．Scientists have suggested a solution to cutting down greenhou effect:planting an area
________the US with trees,which,when mature,would consume as much carbon dioxide as is being relead.
A．of the size of B．the size of C．as the same size as D．the same size of 8．Chichester covered anyone had previously sailed alone.
A．more than twice the distance B．more than twice longer
C．over twice longer the distance as D．as over twice long as
9．It is reported that Americans eat too much protein every day,_______as they actually need. A．twice as much B．as twice much C．much as twice D．as much twice
10．The young man who is________can’t even imagine a bit about what happened________of the last century.
A．in the20s…in the80s B．in his20s…in80s
C．in his20s…in the80s D．in the20s…in80s
11．Paper produced every year is______the world’s production of vehicles.
A．as three times heavy as B．the three time weight of
C．three times the weight of D．three times heavier as
12．Americans eat________vegetables per person today as they did in1910.
A．more than twice B．as twice as many
C．twice as many as D．more than twice as many
13．My car’s performance is___since the engine’s been tuned and the tires have been changed．
A．better as twice B．twice as the condition
C．twice as good D．twice as better
14．At a rough look,the area of the city is about________the old one.
蘑菇的英语A．three times the size as B．three times the size of
C．three times that is D．three times what is
15．_______people in the world are nding information by email every day.
A．Several million B．Many millions
C．Several millions D．Many million
16．Last year John earned_______his brother did,who has a better position in a bigger company.
A．twice as many as B．twice as much as
