【中考夺分天天练】2015届中考英语（人教版）总复习 第二篇 语法精点击 专题4 　数词（共36张PPT）

课件36张PPT。专题4 　数词专题4 　数词┃考点直击 ┃【考纲解读】专题4 　数词数词在安徽中考的听力中经常考到，因此考生必须掌握这一重要的语法。专题4 　数词1　基数词的构成及用法 (1)基数词的构成
①0—12单独记。如：zero, one, two, three 等。
②13—19直接在词尾加－teen。如：fourteen，seventeen等，但thirteen，fifteen，eighteen需要特殊记忆。
③20，30，40等整数的基数词均以－ty结尾。如： twenty, thirty, forty, fifty, eighty等。专题4 　数词④表示“几十几”要加连字符号“－”。如：forty－eight, ninety－seven等。
⑤表示“几百几十”或者“几百几十几”在百后加and。 如：one hundred and fifty－six, five hundred and nine 等。专题4 　数词⑥英语中，四位数或者四位数以上的基数词书写为阿拉伯数字时，从右往左每三位加—个逗号，第—个逗号表示thousand (千)，第二个逗号表示million(百万)，第三个逗号表示billion(十亿)。如：3，610＝three thousand six hundred and ten; 94，295＝ninety－four thousand two hundred and ninety－five; 274，350＝two hundred and seventy－four thousand three hundred and fifty等。专题4 　数词【典例1】 —Eighty－six and nine hundred and fifty is ________.
—It's correct.
A．one thousand and sixty－three
B．one thousand and thirty－six
C．one hundred and thirty－six
D．one hundred and sixty－three专题4 　数词[解析] B　上句的句意为“86＋950等于________”。根据计算可知答案是1036。故选B。专题4 　数词(2)基数词的用法
①基数词表示编号　通常情况下，表示年级、班级、排、房间、课等的编号要用基数词，且基数词要居后，表示“年级”等名词的首字母要大写；若基数词用英语表示，其首字母也要大写。如：Lesson One第 1 课，Room 306 306号房间， Row Four第 4 排， Class Three, Grade Nine九年级三班
[提示] 表示编号也可以用序数词，但序数词前必须加the。如：the first lesson第—课； the fourth row第四排专题4 　数词【典例2】 —Excuse me, which room do you live in?
—I live in ________．
A．the Room 508 B．Room 508
C．508 Room D．room 608
[解析] B　英语中用“名词＋基数词”表示编号，且名词首字母要大写。故选B。专题4 　数词②确数和概数的表达
“基数词＋hundred/thousand/million/billion表示确切数目；表示不确切数目，即数百、数千等时，要用“hundreds/thousands/millions/billions of”结构。如：five hundred students 五百名学生； thousands of students 数千名学生专题4 　数词【典例3】 The volunteers sent ________ books to a mountain village school on Children's Day.
A．two hundreds of B．two hundred of
C．hundreds of D．hundred of
[解析] C　表示具体数字时，用“数词＋hundred”，后不接of，排除A、B；表示不确切数目时，用“hundreds of”结构。故选C。专题4 　数词③以－ty结尾的基数词的复数形式的意义
20至90之间以－ty结尾的基数词表示年代或岁数时，以复数形式出现。如：
in the 1990s/in the 1990's 在二十世纪九十年代； in her forties在她四十多岁时专题4 　数词【典例4】 2014·漳州改编In his ________， Wilson returned to his hometown and began to teach.
A．thirty B．thirties
C．thirtieth D．thirteen
[解析] B　“in one's＋基数词的复数形式”意为“在某人……多岁时”。句意：在他30多岁时，Wilson返回了家乡，开始教书。专题4 　数词2　序数词的构成及用法 (1)序数词的构成
one→first; two→second；three→third；five→fifth；eight→eighth；nine→ninth；twelve→twelfth; forty→fortieth
记忆口诀：基变序，有规律。词尾加上－th。一、二、三， 特殊记，词尾字母t、 d、 d。八减t，九减e，ve要用f替。－ty把y变成i，记住－th前有个e。专题4 　数词(2)序数词的用法
①序数词用来表示事物的先后顺序，多与定冠词、物主代词或名词所有格连用。专题4 　数词【典例5】 John lives on ________ floor. He uses a lift to go up and down.
A．nine B．the ninth
C．ninth D．a ninth
[解析] B　句意：约翰居住在第九层楼，他用电梯上上下下。表示事物的顺序用序数词，序数词前用定冠词the。故选B。专题4 　数词②不定冠词a/an与序数词连用。序数词除了与定冠词、形容词性物主代词或名词所有格等连用表示顺序外，还可与a/an连用，表示“再一， 又一”，相当于another。如：
Then they had a second child—a son.
后来他们又有了一个孩子——一个儿子。专题4 　数词【典例6】 I like neither of the two books. Please show me ________ one.
A．third B．a third
C．the third D．three
[解析] B　句意：这两本书我都不喜欢，请给我再拿一本来。序数词前用a，表示“又一；再一”。故选B。专题4 　数词3　分数的表达法及用法 ①分数的表达法：分子用基数词，分母用序数词； 若分子大于1，分母的序数词要用复数。如： one third, two thirds
[提示] 1/2可以表达为one half 或 a half (但不说 one second); 3/4可以表达为three quarters/three fourths。专题4 　数词【典例7】 The teacher said that ________ of the boys would take part in the talent show.
A．three five B．three fives
C．thirds fifths D．three fifths
[解析] D　分数表达法：分子用基数词，分母用序数词；当分子大于1时，分母的序数词要用复数形式。故选D。专题4 　数词②分数作主语时，谓语动词的单复数形式应由后面名词的数确定：后面的名词为可数名词复数时，谓语动词用复数形式；后面的名词为不可数名词或可数名词单数时，谓语动词用单数形式。如：
Three fifths of the work is finished.
这项工作已经完成了五分之三。
Three fifths of the students in our class are League members.
我们班五分之三的学生是共青团员。专题4 　数词【典例8】 2014·泰州About ________ of the earth ________ covered with water, but we have less and less available fresh water.
A．three－fourth; is
B．three－fourths; is
C．three－fourth; are
D．three－fourths; are
[解析] B　四分之三可以表示为three fourths; earth为不可数名词，谓语动词用单数形式。故选B。专题4 　数词┃考点过关┃(　　)1. 2014·合肥45中三模Class, let's turn to Page ________ and read the ________ paragraph.
A．Five; five B．Five; fifth
C．Fifth; five D．Fifth; fifth B第一空表示编号，用基数词；第二空表示顺序，用序数词。故选B。专题4 　数词(　　)2. 2014·安庆外国语学校模拟Last year, I visited a chemical factory in Anqing, and there are about ________ workers in it.
A．six thousands B．six thousand
C．six thousands of D．six thousand ofB表示确切数目时，用“数字＋thousand”；表示不确定数目时，用thousands of，故选B。专题4 　数词(　　)3. 2014·亳州二中模拟Nowadays ________ of business letters are written in English.
A．two third B．two thirds
C．two three D．second threeB表示确切数目时，用“数字＋thousand”；表示不确定数目时，用thousands of，故选B。专题4 　数词(　　)4.—Excuse me, where can I buy a jacket?
—You can go to the Men's Wear Section on ________ floor.
A．two B．twice
C．second D．the secondD表示在“楼房的多少层”时用序数词，其前要用定冠词the。故选D。专题4 　数词(　　)5.—I hear your friend is visiting Xiao Yaojin Park. Is it the second time for him?
—Yes, and he will come for ________ time next spring.
A．a third B．third C．the third D．a secondA根据句意可知，对方已经到过逍遥津公园两次了，那么明年的春天应该是第三次到这里。序数词前用不定冠词a，表示“再一；又一”。故选A。专题4 　数词(　　)1. 2014·河池—Where is Class ________？
—It's on the ________ floor.
A．Ninth; second B．Ninth; two
C．Nine; second D．Nine; two语法专练C专题4 　数词(　　)2. 2014·随州—What do you think of the environment here?
—Wonderful! ________ of the land ________ covered with trees and grass.
A．Two fifths; is B．Two fifth; is
C．Two filths; are D．Two fifth; areA五分之二的表示法是two fifths；land是不可数名词， 故谓语动词用单数形式。故选A。专题4 　数词(　　)3.—Mountain Huang is really a beautiful place, isn't it?
—Yes, ________ travelers like to come here for a visit.
A．thousands of B．thousand of
C．thousand D．three thousandsA当表示“确切数目”时，遵守“两无”规则，即无s，无of；当表示“不确切数目”时，遵守“两有”规则，即有s，有of。根据句意可知选A。专题4 　数词(　　)4.________ is the biggest number of the four.
A．Two－thirds B．A half
C．A quarter D．One－third A通过比较可知，two thirds＞a half＞one third＞a quarter，故选A。专题4 　数词(　　)5. 2014·黄石There are ________ doctors in this hospital; ________ of them
are women doctors.
A．two hundred; two fifth
B．two hundreds; two fifth
C．two hundred; two fifths
D．two hundreds; two fifthsC表示具体数字时，直接在hundred前加数词；五分之二的正确表达法是two fifths。故选C。专题4 　数词(　　)6. 2014·襄阳—We have sixty students in our class. ________ of them are boys. How many girls are there, do you know?
—There are twenty girls.
A．One third B．Two thirds
C．One quarter D．A halfB根据上句班里有60名学生，再答语可知女孩是20人，那么男孩就是40人，占总人数的三分之二。故选B。专题4 　数词(　　)7. 2014·广东It's never too old to learn. Karl Marx began to learn English in his ________．
A．the fiftieth B．fiftieth
C．fifty D．fiftiesD“in one's＋基数词复数形式”表示“在某人……多岁时”。专题4 　数词(　　)8.________ the world's books and newspapers are written in English.
A．Three thirds B．Three fourth of
C．Three quarters of D．Three quarters CA、B两项表达法错误；根据句意可知，应该用名词所有格，故选C。