数词练习题(精选9篇)
AThe bike cost me _________ yuan
C..five hundred and fortyfive hundred fortyB..
D.five hundreds fourty five hundred fourty
3.AMy telephone number is ____________.eighty eight two forty four zero nine .
B.eight eight two double four O nine
C
D..eighty eight two forty-four zero nine
4.A.an 8 year oldMary is _________ girleight eight two four four zero nine
C.the 8 years oldB.8一.years —old
5.D.an 8一year—old
A—What’s the date today?.It’s SaturdayB.It’s July— ___________C.It’s fineD.It’s JuIy 156.The tree is______tall.A.fourteen footsC.fourteen footD.forty foot B.fourteen feet
7.Fifty plus ______.A.fourty is ninetyB.forty is ninety
8.There are ______C.thirty is ninety
students in this school.D.fifty is ninety
B.four hundreds fifty two A.four hundred fifty-two
C.four hundred and fifty-two D.four hundreds and fifty-two
9.My home is about ______
A.three hundred metreB.three hundreds metres away from the school.10.December is______C.three hundred metresD.three hundred metre
11.There were two world wars during ______A.the twelvethB.twelveand last month in a year.C.the twelfthD.twelfthcentury.A.the twentiesC.twentiesD.twentieth B.the twentieth
一、教学内容:
1、基数词和序数词的区分。
2、基数词和序数词的用法。
3、中考总复习考点。
二、教学重难点:
中考基数词和序数词考突破。
三、教学过程: Step 1 Revision
1、检查上节课代词的试卷。
2、复习数词的拼写。
Step 2 Presentation 1
1、基数词在句中主要用作主语、宾语、定语、表语、同位语,2、表示一个具体数字时,hundred, thousand, million一律不用复数;在表示一个不确定数字时则用复数。
3、表示“几十”的数词的复数形式可用来表示人的岁数或年代.4、表示时刻用基数词。
5、表示编号
6、特殊用法: Step 2 Presentation 2
1、基数词变序数词的口诀
一二三,要全变。其它th加后面。八去t,九去e,五及十二ve变f。ty要变tie。
若是碰到几十几,只变个位就可以。
2、序数词的用法
(1)序数词主要用作定语,前面要加定冠词..
(2)序数词有时前面可加不定冠词来表示“再一”,“又一”这样的意思.(3)由几个序数词和基数词在拼写时不对应,很容易写错,应特别注意。(4)表示年,月,日时,年用基数词表示,日用序数词表示。
(5)表示分数时,分子用基数词表示,分母用序数词表示。分子大于1时,分母加-s。(6)序数词缩写形式.Step 4 practice 1.(2004年上海市徐汇区中考试题)About ________ students in our class can describe that place in English.A.three-fifths B.three-fifth C.third-five D.third-fifths
答案:A。该题考查的是分数的表示法。分子用基数词表示,分母用序数词表示。分子大于1时,分母应加-s,因此应选A。2.(2004年河北省中考试题)
Nine _______ pounds a week? That’s very good.A.hundred of
B.hundreds of C.hundreds
D.hundred
答案:D。该题考查的是数词的用法。Nine hundred是一个具体的数量,这是数词不能用复数形式,后面也不能加of。所以应选D。
1.It is said that SARS has killed more than ________ people worldwide.A.three hundreds
B.three hundreds’
C.three hundred’s
D.three hundred 2.---How many workers are there in your factory?
---There are two __________.A.hundreds B.hundred C.hundred of D.hundreds of 3.---Which is the smallest number of the four?
---_______________.A.Two-thirds B.A half C.A quarter D.Three-fourths 4.---What do you think of a war, Li Ming?
---I’ve no idea.But it’s a fact that _______ people had to leave their hometown during the War on Iraq.A.three thousands
B.thousand of
C.thousands of
D.several thousands 5.We all think that the _______ century will bring us more hopes.A.twenty-first
B.twentieth-first
C.twenty-one
D.twentieth-one Step 5 Summary 1基数词和序数词的区分。2基数词和序数词的用法。3中考总复习考点。Step 6 Homework
一、教学目标 〈一〉 知识目标
1.了解数词的分类及定义(To know about the classification and definition of the numbers)
2.知道数词的构成规律(To understand the composition of the numbers)3.掌握数词的各种运用(To grasp the usage of the numbers)4.能够完成随堂测试(Finish the tests)〈二〉能力目标
通过复习英语会考中数词的考点,以便学生能在考试中顺利完成与数词相关的题目。
〈三〉情感目标
通过复习,帮助学生更轻松地记忆知识,以便提高学生的应试能力,增强他们对参加中考的自信心。
二、教学重点
1.知道数词的构成规律(To understand the composition of the numbers)3.掌握数词的各种运用(To grasp the usage of the numbers)4.能够完成随堂测试(Finish the tests)
三、教学难点
掌握数词的各种运用并能够完成随堂测试(To grasp the usage of the numbers and finish the tests)
四、Teaching procedures(教学流程)Step 1: Leading in(导入)The teacher will play the video and listen to the Song __ ten little Indians.Step 2: Step 2: Revision goals(复习目标)Show the revision goals to make sure what we will review this class.Step 3:Presentation(呈现)
Show the classification and definition of the numbers(出示数词的分类和定义).Step 4: Explaining the composition(解释数词构成)1)Explain the composition of the cardinal numbers(解释基数词的构成).2)Testing Try your best to speak loudly and quickly!3)Explain the composition of the ordinal numbers(解释序数词的构成).Extend(拓展): a rule of the ordinal numbers(基数词变序数词的口诀)
Step 5: Explaining the usage(解释数词用法)1)Explain the usage of the cardinal numbers(解释基数词的用法).2)Testing a.Choice questions b.What is the time? 3)Explain the usage of the ordinal numbers(解释序数词的用法).4)Explain the other usage of the numbers(解释数词的其他用法)5)Testing a)Can you match numbers? b)When were they founded? Step 6: Summary(课堂小结)What did we review? Step 7: Practice(综合练习)
Show five exercises to practice.Step 8: homework
1.基数词的构成
(1)1-20
one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen,fourteen,fifteen, sixteen, seventeen, eighteen, nineteen, twenty
(2)21-99 先说“几十”,再说“几”,中间加连字符。
23→twenty-three,34→thirty-four,45→forty—five,56→fifty-six,67→sixty-seven,78→seventy-eight,89→eighty-nine,91→ninety-one
(3)101—999先说“几百”,再加and,再加末两位数或末位数;
586→five hundred and eighty-six,803→eight hundred and three
(4)l,000以上,先从右往左数,每三位数加一个“,”,第一个“,”前为thousand.第二个“,”前为
million,第三个“,”前为billion(美式)或thousand ,million(英式),然后一节一节地表示。
1,001→one thousand and one
9,785→nine thousand, seven hundred and eighty-five
18,423→eighteen thousand, four hundred and twenty-three
6,260,309→six million two hundred and sixty thousand three hundred and nine
750,000,000,000→seven hundred and fifty, billion(美式) seven hundred and fifty thousand million(英式)
2.基数词的用法
(1)作主语
eg.Four Of them come from Paris.
(2)作宾语
eg.一 How many books would you like?
一I would like two.
(3)作表语
eg.Seven minus two is five.
(4)作定语
eg.There are three people in my family?
(5)作同位语
eg. You two will go swimming with us.
(6)表具体数字时,hundred, thousand ,million用单数。
eg. There are six hundred students in our grade.
(7)表不确定的数字时,数词用复数。若带名词,再加of。 hundreds of(数百,成百上千的),thousands of(数干,成千上万的),millions of(数百万)two thousand (两千)
Thousands and thousands of people have visited the city.成千上万的人参观了这座城市。
(8)在一些表示“一排”或“一组”的词组里;
eg,They arrived in two sand threes.他们三三两两地来了。
(9)表示“…十”的数词的复数可以表示人的岁数或年代。
eg. He is in his early thirties.他有三十来岁(31—34岁):
This took place in the 1930s.这事发生在二十世纪三十年代;
(10)表示时刻
钟点表达法。
顺读法(钟点+分钟) 如:4:30 four thirty 4:45 four forty-five 4:15 four fifteen 倒读法(分钟+to/past+钟点)
如:4:30 half past four
4:15 fifteen past four/a quarter past four 4:45 fifteen to five/a quarter to five
eg.I watch CCTV News at seven o’clock every evening.
(11)表示百分数
百分数的表达方式是:基数词+ percent(单数形式)+of+名词。如:
Thirty percent of the students in my class are from cities. 我班30%的学生来自城市。
About 61 percent of the surface is covered by water. 大约61%的表面被水覆盖着。
(12)小数的读法:小数点读作“point”,小数后各位数要分别读, 小数点前的数若为“0”可略去不读。
Examples: 2.468 读作:two point four six eight
II 序数词
1.序数词的构成
(1)一般在基数词后加th
eg.four→fourth,thirteen→thirteenth
(2)不规则变化
one→first, two→second, three→third, five→fifth,eight→eighth,
nine→ninth,twelve——twelfth
(3)以y结尾的十位整数,变y为ie再加th
twenty→twentieth, forty→fortieth, ninety→ninetieth
(4)从二十一后的“几十几”直至“几百几十几”或“几千几百几十几”只将个位的基数词变为序数词。
twenty-first,two hundred and forty-fifth
2.序数词的用法
(1)序数词作定语时,一般要与定冠词或物主代词连用。
eg.Tom is their second son.
He is the first one to come here.
(2)序数词有时可与不定冠词连用,表示数量上“又—”,“再一”
eg: He tried a second time.他又试了—次。
Shall l ask him a third time?还要我再问他—次吗?我已问了他两次)
(3)序数词的缩写形式为:阿拉伯数字加上这个词的末尾两个字母。
1st 2nd,3rd,4th,20th,21st,22nd,23rd
(4)表示年、月、日时,年用基数词,日用序数词。
8月15日:(英)15,8,=15th,August,2005;(美)8,15,2005=August 15th,2005
III基数词和序数词都可以用来给数字编号
The first lesson=Lesson Two(第二课)
第305房间:Room three o(零)five
长安街76号:seventy-six Changan Street
电话号码:204-2244:telephone number two o(零) four two two(double two four four
十一路公共汽车:Bus(No.) eleven
IV分数词的表达
分子用基数词,分母用序数词,分子大于1时,分母加s
eg.1/3-one third;2/5-two fifths
V数学运算的表达
eg.3+5=8 Three plus/and five is eight.
9-2=7 Nine minus two is seven.
6x5=30 Five times six is thirty /six unutilized five is thirty.
8÷2=4 Eight divided by two is four.
VI倍数表示法
a. 主语+谓语+倍数(或分数)+ as + adj. + as
I 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 49 times 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 8 percent higher this year than that of last year.
今年比去年粮食产量增加8%。
d. 还可以用by+倍数,表示增加多少倍
The production of grain has been increased by four times this year.
今年粮食产量增加了4倍。
一、数词分为基数词、序数词、分数、小数和概数。复习时要注意下面问题:
1.基数词的意义:表示事物数量的多少,特别是hundred,thousand,million等,前面若有基数词或某些表示数量的形容词时,它们只能用单数;
2.序数词的意义:表示事物的顺序,前面一般要加定冠词;
3.分数的形式:分子用基数词,分母用序数词,当基数词大于“1”时,序数词后要用复数形式;
4.小数的组成和读法:小数点读作point,小数点前面的数按基数词的方法读,小数点后面的数按数字读;
5.概数
(1)概数的表示:tens of/hundreds of/thousands of/millions of/dozens of/scores of/a number of/a quantity of/a few/a little/a great deal of/a great(good)many
(2)概数的注意事项:
概数前面不能有确切的数字,但tens of/hundreds of/thousands of/millions of/dozens of/scores of前面可有many,several,some等修饰词:tens of/hundreds of/thousands of/millions of/dozens of/sc0Iles of/a number of/a few/a great(good)many一般只修饰可数名词复数;
a little/a great deal of只修饰不可数名词;
a quantity of/a lot of/lots of/plenty of既可修饰可数名词复数,又可修饰不可数名词;
few/little形式上是肯定,而意义上是否定;a few/a little才表示肯定的意义。
6.倍数的表示:
(1)倍数(twice,…times)+as+形容词原级+as...
(2)倍数+形容词的比较级+than...
(3)倍数+the+ n.(size/length/height/width/weight)+of
二.主谓一致 、
1.主谓一致的原则:形式一致;内容一致;就近一致。
2.主谓一致的特例: .
(1)代词作主语 ’
A.主语是he,she,it,either,neither,each,one,the other,another,anything,anyone,something,someone,somebody,everybody,everyone,everything,nobody,no one,nothing等代词时,谓语动词用第三人称单数形式。
B.主语是I(除be动词用am外),you,we,they时,谓语动词用第三人称复数形式。
C.主语是who,what,which,all,more,most,some,any,none,the rest.the remainder时,谓语动词的形式应依具体情况而定。
(2)名词作主语
A.一般说来,不可数名词及可数名词的单数作主语时,谓语动词用第三人称单数形式。
B.表示总称意义的名词public,people(人们,人民),cattle,police,youth作主语时,谓语动词用第三人称复数形式。
C.主语是board,family,class,team,group,crowd,audience,company,crew,committee,enemy,government,herd,jury,party等名词时,如果是作为整体,谓语动词用第三人称单数形式;如果作为其中一个个的成员,谓语动词用第三人称复数形式。
D. 主语是时间、距离、价格、度量衡单位等名词或短语时,即使是复数,谓语动词也只能用第三人称单数形式。
E.主语是news,politics,physics,plastics,mathematics等名词时,谓语动词也只能用第三人称单数形式。
F.主语若是书名,剧名,报刊、杂志名称或国家、单位名称时,即使名词是复数形式,谓语动词也只能用第三人称单数形式。
G.在算式里,主语是数词时,谓语动词也只能用第三人称单数形式。
H.主语是clothes,compasses,goods,glasses,trousers,scissors,shoes,socks,gloves等名词时,谓语动词用第三人称复数形式。
I.主语是a lot of,lots of,plenty,百分比of+名词时,谓语动词的形式须依照名词的数而确定。
J.主语是kind of,type of,pair of,amount of,quantity of+名词时,谓语动词的形式v须依照kind,type,amount,pair,quantity的数而确定。
K.主语是the number of+名词的复数时,谓语动词用第三人称单数形式。
L主语是a number of+名词复数时,谓语动词用第三人称复数形式。
M.主语是a/the population时,谓语动词用第三人称单数形式。
N.主语是分数+population时,谓语动词用第三人称复数形式。
O.主语是means,works,sheep,fish,Japanese,Chinese等名词时,谓语动词的形式须依照它们在句中的意义来确定。
P.用引号引起来的词、短语、句子作主语时,谓语动词用第三人称复数形式。
(3)两个或两个以上的名词连在一起作主语
A.and,both…and连接名词或代词作主语,谓语一般用复数形式。
B.and连接的两个成对的名词,如bread and butter;soda and water;coffee and water;aim and end;salt and water等,虽有and连接,但仍表示单一的概念,谓语动词常用第三人称单数形式。
C.and连接的两个名词若是指同一个人,即:and前的名词前有冠词,而and后面的名词前没有冠词。谓语动词常用第三人称单数形式。
D.and所连接的两个名词前分别有:every,each,no,many a等修饰时,谓语动词用第三人称单数形式。,
E.主语是连接词or,either...or…,neither...nor...,whether...or…,not…but…,not only…but also…等连接的名词或代词时,谓语动词的形式应由与之最接近的名词或代词决定。
F.主语是介词in,out of,with,except,besides,without,as well as,no less than,rather than,more than,but,along with,together with,like,including,in addition to等连接的两个名词时,谓语动词的形式应与这些词前面的名词的数保持一致。
G.one and a half+名词复数作主语时,谓语动词用第三人称单数形式。
H.many a+名词单数;more than one+名词单数;a+名词单数+or two等作句子的主语时,谓语动词用第三人称单数形式。
I.one or two+名词复数作句子的主语时,谓语动词用第三人称复数形式。
(4)The+形容词作主语
A.The+形容词指人作主语时,谓语动词一般用第三人称复数形式。
B.The+形容词指抽象概念作主语时,谓语动词一般用单数形式。
(5)主语是句子、短语
A.主语是非谓语动词短语时,谓语动词常用第三人称单数形式。
B.主语是从句时,谓语动词一般用第三人称单数形式;但what,who引导的从句作主语时,若指具体的东西或人,谓语动词可用第三人称复数形式。
C.在强调句型“It+ be+被强调的部分+that/who…”中,be总是用单数形式;that/who后的谓语动词的形式必须跟被强调的主语保持一致。
D.定语从句中谓语动词的形式必须跟先行词的单、复数形式保持一致。
注意:在“one of+名词复数+定语从句”结构中,定语从句的谓语动词一般用第三人称复数形式,但当one前面有the,the very,the less,the only或形容词最高级修饰时,定语从句的谓语动词一般用第三人称单数形式。
E.there be结构中be动词的形式由紧接be后面的名词的形式所决定。
F.在某些虚拟语气的句子中,无论主语是什么,be动词总是为were的形式。
回放真题
真题1(福建卷24)
She has set a new record,that is, the sales of her latest book _______ 50 million.
A.have reached B.has reached C.aye reaching D.had reached
【答案及解析】 A根据句子的意思,谓语应用复数形式,用现在完成时态表示动作的持续性,故选A。
真题2(2004广西卷33)
It is reported that the United States uses ________energy as the whole of Europe.
A.as twice B.twice much C.twice much as D.twice as much
【答案及解析】 D本题考查倍数关系的表达。有三种表达方式:1.倍数+as + adj +as+其它;2.倍数+比较级+than+其它;3.倍数+the height/size/weight/length/…+ of+其它。由此可知本题正确答案为D。
真题3(2004北京卷28)
The teacher,with 6 girls and 8 boys of her class, ________visiting a museum when the earthquake struck.
A.was B.were C.had been D.would be
【答案及解析】 A名词、代词与介词短语连用作主语时,谓语动词的形式由介词前面的名词、代词确定。因此本题答案为A,意思是:当地震发生的时候,老师带着班上的6个女孩和8个男孩正在参观一家博物馆。
真题4(2004上海春季卷30)
No one in the department but Tom and I ______that the director is going to resign.
A.knows B.know C.have known D.am to know
【答案及解析】 A本题考查的是主谓一致。这个句子的主语是no one,而不是Tom and I,主语后面接说明主语的修饰语,如用with,a10ng with,together with,as well as,like,rather than,more than but except,besides,including,in addition to与修饰语连接,谓语动词不受修饰成份的影响,仍与主语保持一致。
真题5(北京卷34)
He did it ________it took me.
A.one.third a time B.one-third time
C.the one.third time D.one-third the time
【答案及解析】D考查倍数的用法。译文:他做这件事只用了我(做这件事)三分之一的时间。这句话带了一个定语从句,修饰the time,只是没有关系词。定语从句先行词为time,moment时,常不用关系词。
真题6(2003上海卷31)
The house rent is expensive.I’ve got about half the space I had at home and I’m paying _________here.
A.as three times much B.as much three times
c.much as three times D.three times as much
【答案及解析】D考查比较句的语序。对于比较句,“量”应放在谓语之后as
之前,因此选D。
真题7(2003上海春季卷28)
When and where to go for the on salary holiday ________yet.
A.are not decided B.have not been decided
C. is not being decided D. has not been decided
【答案及解析】 D根据副词yet可确定用现在完成时。
真题8( 上海春季卷26)
He is the only one of the students who ____a winner of scholarship for three years.
A. is B. are C. have been D. has been
【答案及解析】 D这是一个定语从句。在one前是否有定冠词决定定语从句中的谓语动词的单复数形式,one of the students中的先行词是the students,定语从句中的谓语动词要用复数形式。The only one of the students中的先行词是The only one,定语从句中的谓语动词要用单数形式。又因“for three years”是完成时的标志,所以答案为D。
真题9( 上海卷23)
As a result of destroying the forests, a large ________ of desert ________covered the land.
A. number, has B. quantity, has C. number, have D. quantity, have
【答案及解析】B 译文:破坏森林的结果是大片沙漠覆盖了陆地。
真题10(2001上海春季卷25)
________people in the world are sending information by e-mail every day.
A. Several million B. Many million
C. Several millions D. Many millions
【答案及解析】A 在million,hundred等前如果有具体数字或 several等词时,要用单数形式。many一般不与million等词连用。但在表示不确切数目时用复数,如:表示“数百万”,英语为millions of。译文:每天,世界上有几十万人通过e-mail传递信息。答案为A。
真题l1(0上海卷26)
________of the land in that district ________covered with trees and grass.
A. Two fifth, is B. Two fifth, are
C. Two fifths, is D. Two fifths, are
1.数字的表示
三位数数词要在百位和十位(若无十位则和个位)之间加and。
1,000以上的数字,从后向前第三位数加一个“,”,第一个“,”前为thousand,第二个“,”前为million,第三个“,”前为billion。
2.序数词除了first,second,third外,其余都在基数词尾加-th构成。
3.分数分子在前,分母在后,分子用基数词,分母用序数词,当分子大于1小时,分母序数词要变成复数。
第八、第九需要去掉末尾字母再加th,第五、第十二需要把ve变成f后加th, 第二十、第三十等整十数则把twenty,thirty等基数词中的ty变作tie后加上th即可。而二十之后的.表示几十几的数词,则只需要变个位数即可。
序数词句法功能:
1、序数词在句中可作主语、宾语、定语和表语。
例:The second is what I really need. 第二个是我真正需要的。(作主语)
注:序数词在使用时,通常前面要加定冠词the;但是如果序数词前出现不定冠词a或an时,则表示“再......”,“又......”。
2、在英语中,使用序数词时前面要加定冠词 the,但是,在下面的情况下则不加 the:
(1)当序数词前有形容词性物主代词或名词所有格修饰时,序数词前不用 the。
(2)当表达分数时,序数词前不用 the。
(3)当表达“又一,再一”时,序数词前不用 the,但可加不定冠词。
2016江西教师招聘考试初中英语语法大全:数词
定义: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。I基数词
1.基数词的构成(1)1-20
one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen,fourteen,fifteen, sixteen, seventeen, eighteen, nineteen, twenty(2)21-99 先说“几十”,再说“几”,中间加连字符。
23→twenty-three,34→thirty-four,45→forty—five,56→fifty-six,67→sixty-seven,78→seventy-eight,89→eighty-nine,91→ninety-one(3)101—999先说“几百”,再加and,再加末两位数或末位数; 586→five hundred and eighty-six,803→eight hundred and three
(4)l,000以上,先从右往左数,每三位数加一个“,”,第一个“,”前为thousand.第二个“,”前为
million,第三个“,”前为billion(美式)或thousand ,million(英式),然后一节一节地表示。
1,001→on e thousand and one
9,785→nine thousand, seven hundred and eighty-five
18,423→eighteen thousand, four hundred and twenty-three
6,260,309→six million two hundred and sixty thousand three hundred and nine
750,000,000,000→seven hundred and fifty, billion(美式)seven hundred and fifty thousand million(英式)2.基数词的用法(1)作主语
eg.Four Of them come from Paris.(2)作宾语
eg.一 How many books would you like? 一I would like two.(3)作表语
eg.Seven minus two is five.(4)作定语
eg.There are three people in my family•(5)作同位语
eg.You two will go swimming with us.(6)表具体数字时,hundred, thousand ,million用单数。
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eg.There are six hundred students in our grade.(7)表不确定的数字时,数词用复数。若带名词,再加of。hundreds of(数百,成百上千的),thousands of(数干,成千上万的),millions of(数百万)two thousand(两千)Thousands and thousands of people have visited the city.成千上万的人参观了这座城市。
(8)在一些表示“一排”或“一组”的词组里;
eg,They arrived in two sand threes.他们三三两两地来了。(9)表示“„十”的数词的复数可以表示人的岁数或年代。eg.He is in his early thirties.他有三十来岁(31—34岁): This took place in the 1930s.这事发生在二十世纪三十年代;(10)表示时刻 钟点表达法。
顺读法(钟点+分钟)如:4:30 four thirty 4:45 four forty-five 4:15 four fifteen 倒读法(分钟+to/past+钟点)
如:4:30 half past four
4:15 fifteen past four/a quarter past four 4:45 fifteen to five/a quarter to five
eg.I watch CCTV News at seven o’clock every evening.(11)表示百分数
百分数的表达方式是:基数词+ percent(单数形式)+of+名词。如:
Thirty percent of the students in my class are from cities.我班30%的学生来自城市。
About 61 percent of the surface is covered by water.大约61%的表面被水覆盖着。
(12)小数的读法:小数点读作“point”,小数后各位数要分别读,小数点前的数若为“0”可略去不读。
Examples: 2.468 读作:two point four six eight
0.157 读作:(zero)point one five seven II 序数词
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1.序数词的构成
(1)一般在基数词后加th
eg.four→fourth,thirteen→thirteenth(2)不规则变化
one→first, two→second, three→third, five→fifth,eight→eighth, nine→ninth,twelve——twelfth
(3)以y结尾的十位整数,变y为ie再加th
twenty→twentieth, forty→fortieth, ninety→ninetieth
(4)从二十一后的“几十几”直至“几百几十几”或“几千几百几十几”只将个位的基数词变为序数词。
twenty-first,two hundred and forty-fifth 2.序数词的用法
(1)序数词作定语时,一般要与定冠词或物主代词连用。eg.Tom is their second son.He is the first one to come here.(2)序数词有时可与不定冠词连用,表示数量上“又—”,“再一” eg: He tried a second time.他又试了—次。
Shall l ask him a third time?还要我再问他—次吗?我已问了他两次)(3)序数词的缩写形式为:阿拉伯数字加上这个词的末尾两个字母。1st 2nd,3rd,4th,20th,21st,22nd,23rd
(4)表示年、月、日时,年用基数词,日用序数词。
2005年8月15日:(英)15,8,2005=15th,August,2005;(美)8,15,2005=August 15th,2005 III基数词和序数词都可以用来给数字编号
The first lesson=Lesson Two(第二课)第305房间:Room three o(零)five 长安街76号:seventy-six Changan Street
电话号码:204-2244:telephone number two o(零)four two two(double two four four 十一路公共汽车:Bus(No.)eleven IV分数词的表达
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分子用基数词,分母用序数词,分子大于1时,分母加s
eg.1/3-one third;2/5-two fifths V数学运算的表达
eg.3+5=8 Three plus/and five is eight.9-2=7 Nine minus two is seven.6x5=30 Five times six is thirty /six unutilized five is thirty.8÷2=4 Eight divided by two is four.VI倍数表示法
a.主语+谓语+倍数(或分数)+ as + adj.+ as
I 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 49 times 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 8 percent higher this year than that of last year.今年比去年粮食产量增加8%。
d.还可以用by+倍数,表示增加多少倍
The production of grain has been increased by four times this year.今年粮食产量增加了4倍。
我先带学生列出基数词,然后出示序数词,不直接告诉学生基数词和序数词之间变化的规律,让学生自己观察,总结规律,将特殊的序数词圈出来;比如,序数词的第一、第二、第三除外,剩下从“第四”开始每个单词都以th结尾,学生找到规律后,我先教学符合规律的单词,教单词时运用“循序渐进记忆法”,在学习序数词前学生接触了基数词,在基数词的基础上,告诉学生th的发音,这些单词的读音则迎刃而解。接着再教学学生特殊的序数词,以旧知带动新知的记忆。解决了认读这一大关后,就是序数词的简写形式教学,要求学生达到“四会”的重点教学内容。以学生自主探究为主,我写出个别单词的简写形式,请学生通过观察得出简写形式的规律:在基数词后加上最后两个字母。
但是,这个教学过程还是显得太枯燥,学生兴趣没有达到最高,因此,在最后总结时,我给学生编了一首基数词变序数词的歌谣:
一、二、三要全变,(one变为first, two变为second, three变为third)
其他th加后面;(其余都在基数词后加th即可)
八去t,九去e; (eight变为eighth, nine变为ninth)
五和十二变ve;(five变为fifth, twelve变为twelfth)
ty变为tie;(ty结尾的整十的所有基数词都变为tie,再加th)
如果要变几十几,(两位数的基数词变个位数即可,方法同上)
只变个位数就可以。