中考總復(fù)習(xí)講義--冠詞和數(shù)詞

1、.冠詞和數(shù)詞教學(xué)目的一、知識(shí)目的：1. 連詞概述；2. 連詞分類(lèi)； 3. 并列連詞；4. 附屬連詞；5. 考點(diǎn)、易錯(cuò)點(diǎn)分析；6. 常用連詞的用法； 7. 詳細(xì)語(yǔ)境中連詞的詞義和一些常用易混淆連詞的區(qū)別。二、才能目的幫助學(xué)生掌握學(xué)習(xí)詞類(lèi)的方法，學(xué)會(huì)舉一反三。重難點(diǎn)解析一、 重點(diǎn)1. 并列連詞；2. 附屬連詞；二、難點(diǎn) 詳細(xì)語(yǔ)境中連詞的詞義和一些常用易混淆連詞的區(qū)別。知識(shí)點(diǎn)剖析序號(hào)知識(shí)點(diǎn)預(yù)估時(shí)間掌握情況1名詞的分類(lèi)30分鐘掌握2可數(shù)名詞和不可數(shù)名詞40分鐘掌握3名詞所有格30分鐘理解4重點(diǎn)名詞辨析20分鐘理解教學(xué)內(nèi)容：Grammar：冠詞中考對(duì)冠詞的考察主要為：不定冠詞a和an的用法，定冠詞the

2、的用法，零冠詞的用法，習(xí)慣用語(yǔ)中冠詞的位置及使用。一、冠詞的概念及分類(lèi)冠詞是放在名詞前面的一種虛詞，沒(méi)有詞義，沒(méi)有數(shù)和格的變化，不能單獨(dú)使用，只能幫助名詞或起名詞作用的其他詞類(lèi)說(shuō)明其意義。冠詞有兩種：a /an叫不定冠詞，the叫定冠詞。二、不定冠詞a/an的用法: 1. a 用在讀音為輔音開(kāi)頭的名詞之前,  an 用在讀音為元音開(kāi)頭的名詞之前。【注意】1 這里指的是“讀音，而不是指字母。例：a university / useful book / usual thing / European country an hour/honest boy/honor榮耀；榮幸2 另

3、外在單獨(dú)一個(gè)字母前也用an，如：A / E / F / H / I / L / M / N / O / R / S / X例：There is an “m in the word-music.2. 表示某一類(lèi)人或某事物中的任何一個(gè),  通常在首次提到某人或某物時(shí)用a / an，以表示與其他事物的區(qū)別。 例；1 I gave him a book yesterday. 我昨天給了他一本書(shū)。 2 I am reading an interesting story. 我在讀一本有趣的故事書(shū)。 3 I have got a ticket. 我有一張票。 

4、;3. 用在事物的度量單位前,  如時(shí)間、 速度、 價(jià)格等, 表示 "每一個(gè)"。 例：1 We often go to school two times a day. 我們常常一天兩次去學(xué)校。 2 I went to the library once a week at least. 我一星期至少去一次圖書(shū)館。 3 The potato is sold at about 30 fen a jin. 土豆賣(mài)三毛錢(qián)一斤。 4. 用于某些特定的詞組。例：a few, a little, have a good time, have

5、 a look, a number of, have a headache, have a rest, go for a walk等等5. a /an+序數(shù)詞表示“又一，再一。例： I have three books. I want to buy a fourth one.6. 可視為一個(gè)整體的兩個(gè)名詞前 例：a knife and fork 一副刀叉典例精講：1.2019·來(lái)賓Would you like_ new blue T-shirt，Mary?Sorry，Mom. I prefer _ orange one.A.a;a B.a;an C.an;a D.an;an2.201

6、9·曲靖Have you seen the film Dad，Where Are We Going?Yes.Its _ interesting one.A.a B.an C.the D./3.2019·麗水Mrs. Smith has _ 8-year-old daughter who has won two national painting prizes.A.a B.an C.the D.不填4.2019·重慶I have _ English dictionary and it helps me a lot.A.a B.an C.the D./5.2019&#

7、183;鎮(zhèn)江We can live a better life if we create _ less polluted world.A.the B.an C.a D.不填三、定冠詞the的用法 1. 定冠詞特指某些人或某些事物。 例：1 The bag in the desk is mine. 桌子里的書(shū)包是我的。 2 Is this the book you are looking for? 這是你要找的書(shū)嗎? 3 Do you know the man in back? 你知道穿黑色衣服的人是誰(shuí)嗎?2. 假如第一次提到某人或事物的時(shí)候，用a / a

8、n，那么以后再次提到的話，就變成特指的人或事物了；或者說(shuō)話雙方都知道的名詞前。例：1I bought a book from Xinhua book-shop. The book costs 15 yuan. 2 I saw a film yesterday. The film was ended at eight o'clock. 3 Open the door, please. 3. 定冠詞用于表示世界上獨(dú)一無(wú)二的事物或用于自然界現(xiàn)象或方位名詞之前。這些事物當(dāng)然是特指的事物，不可能有兩個(gè)以上。 例：the sunthe moonthe earth the sky

9、the worldthe spring of 20191 The sun is bigger than the moon. 太陽(yáng)比月亮大。 2 I can see a bird in the sky. 我能看到天空中有一只小鳥(niǎo)。 3 I like to have a walk with the bright moon light in the evening. 4. 定冠詞與形容詞連用, 可表示某一類(lèi)人或事物。the +形容詞表示“一類(lèi)人例：1 The wounded were brought to the hospital. 受傷者被送到了醫(yī)院。2 He always h

10、elps the poor. 他經(jīng)常幫助窮人。 3 The deaf can go to this special school. 耳聾者可以進(jìn)這所特殊學(xué)校上學(xué)。 【注意】：the 用在姓名復(fù)數(shù)之前, 表示一家人。  1 The Greens are very kind to us. 格林一家人待我們很好。 2 The Whites like the classic music. 懷特一家喜歡古典音樂(lè)。 5. 用在形容詞或副詞的最高級(jí)和序數(shù)詞前例：1 He is the tallest students in my class.2 Jim wa

11、s the first student who came to school this morning.6. 用在樂(lè)器前面例：play the piano/violin7. 用在山脈、河流、海、洋、名勝古跡等由普通名詞構(gòu)成的專有名詞前例：the Yellow River the Pacific Ocean the West Lake the Great Wall8. 用于形容詞或副詞比較級(jí)等構(gòu)成“ the.the. 的句式中，表示“越越。例： The more, the better.9. 用于固定搭配中。例：all the same仍然；all the time一直；at the momen

12、t此刻；at the same time同時(shí)；by the way順便說(shuō)；do the shopping/washing買(mǎi)東西/洗衣服；in the morning 在上午；in the open air 在戶外，在野外典例精講：6.2019·永州The little girl began to play _ violin at the age of five.A.a B.the C.不填7.2019·十堰Can you play _ guitar?Sure. Its a piece of cake for me.A.a B.an C.the D./8.2019·

13、嘉興Whats the matter with you?I cant remember where I parked _ car.A.a B.an C.the D.不填9.2019·淮安Beijing is one of _ biggest cities in China.A.a B.an C.the D./10.2019·威海Mom，I like _ green T-shirt. Could you buy it for me？A.a B.an C.the D.不填四、零冠詞的用法：1. 人名、地名、國(guó)名等專有名詞前通常不用冠詞：例：1 Mary; Tom; Jim; M

14、iss Li; Mr. Zhang; Lei Feng 2 Beijing; Shanghai; London; Paris 3 England; China; Germany; South Africa 2. 稱呼語(yǔ)前或表示官銜，職位、身份的名詞前不加冠詞；例：1 The guards took the American to General Lee. 2 Lincoln, president of the United States, was murdered in 1864.3 In 1860, Lincoln became President of the

15、 United States. 3. 當(dāng)名詞前有this/that等指示代詞、my/your等物主代詞和some/any等詞時(shí)，不用任何冠詞；例：1 This is my computer. 2 That book is their teachers.4. 年份、月份、星期、日期、季節(jié)、節(jié)日等名詞前不用冠詞：例：in 1988 in August on Thursday in spring on August 8thWe go to school from Monday to Friday. Childrens Day falls on the 1st June. 5. “一日三餐等

16、名詞前不用冠詞：   have breakfast lunch, supper   I have breakfast at 7 every day. 【注意】1 前面有形容詞修飾，需用不定冠詞；例：He had a big dinner today. 他今天吃了頓豐富的晚餐。2 后面有定語(yǔ)修飾，需用定冠詞：例：The breakfast he had today was good. 他今天吃的早餐不錯(cuò)。  6. 球類(lèi)運(yùn)動(dòng)和娛樂(lè)運(yùn)動(dòng)的名稱前不用冠詞：例： 1. play football basketball/volleyba

17、ll/tennis/ table tennis  2. play chess card7. 當(dāng)“bike, car, bus, train, boat, ship, plane等與“by連用，表示一種交通手段時(shí)，不用冠詞： by bus，by train；例； 1 He goes to work by bike. 他騎車(chē)去上班。  2 Did you come back by plane or by train? 你坐飛機(jī)還是坐火車(chē)回來(lái)的?8. 在某些固定搭配里,名詞之前常不用冠詞. 例：on foot; at home; at night; from

18、morning till night, on time, in time, at first, at last等。典例精講：6.2019·永州The little girl began to play _ violin at the age of five.A.a B.the C.不填7.2019·十堰Can you play _ guitar?Sure. Its a piece of cake for me.A.a B.an C.the D./8.2019·嘉興Whats the matter with you?I cant remember where I p

19、arked _ car.A.a B.an C.the D.不填9.2019·淮安Beijing is one of _ biggest cities in China.A.a B.an C.the D./10.2019·威海Mom，I like _ green T-shirt. Could you buy it for me？A.a B.an C.the D.不填【重難點(diǎn)】五、在有些詞組中，有冠詞和無(wú)冠詞意思不同，請(qǐng)注意區(qū)別： 1. 有些個(gè)體名詞“school，college，prison， hospital，bed等詞與動(dòng)詞或介詞連用時(shí)，有無(wú)冠詞表示不同含義例：

20、go to hospital去醫(yī)院看病 go to the hospital去醫(yī)院 并不是去看病，而是有其他目的in hospital 生病住院, in the hospital  在醫(yī)院里at table進(jìn)餐 at the table在桌子旁 by sea乘船 by the sea在海邊 in front of 在前面   in the front of 在范圍內(nèi)的前部 2. 兩個(gè)形容詞都有冠詞，表示兩個(gè)不同東西。例：He raises a black and a white cat. 他養(yǎng)了一只黑貓和一只白貓。如后一個(gè)形容詞無(wú)冠詞，那么指一物。例：He rai

21、ses a black and white cat. 他養(yǎng)了一只花貓。3. a teacher and writer一位老師兼作家一個(gè)人a teacher and a writer一位老師和一位作家兩個(gè)人典例精講：11.2019·內(nèi)江Would you like to come to my party this afternoon?Id like to，but my mother is ill in _ hospital，I will go to_ hospital to see her.A.不填;a B.a;the C.the；the D.不填;the12.2019·蘭州

22、She likes playing _ piano; her brother likes playing _ basketball.A.the;a B.a:the C./;the D.the;/13.2019·邵陽(yáng)The young man in a blue coat is my PE teacher. He often plays_basketball with us.A.the B.a C./14.2019·泰州Lu Jailed，14，from _ Hangzhou Foreign Language School，won _ first place in the C

23、CTV Character Spelling Contest中國(guó)漢字聽(tīng)寫(xiě)大會(huì).A./;the B.a;the C.a;a D./;a15.2019·廣東Eric is not going to Nanjing by _ plane. Instead，he is taking _ train.A./;a B.a;/ C.a;the D.the;a數(shù)詞中考對(duì)數(shù)詞的考察主要為：基數(shù)詞的根本構(gòu)成和用法；序數(shù)詞的構(gòu)成和用法；分?jǐn)?shù)表達(dá)法；時(shí)間表達(dá)法；hundred，thousand，million的用法一 數(shù)詞的分類(lèi) 數(shù)詞主要分為基數(shù)詞和序數(shù)詞兩類(lèi)。1. 基數(shù)詞 表示數(shù)目的詞稱為基數(shù)詞。其形式如

24、下：A從110： one，two，three，four，five，six，seven，eight，nine，tenB. 從11-19： eleven，twelve，thirteen， fourteen， fifteen，sixteen， seventeen，eighteen， nineteen這里除 eleven， twelve， thirteen， fifteen， eighteen為特殊形式外，fourteen，sixteen，seventeen，nineteen都是由其個(gè)位數(shù)形式后添加后綴-teen構(gòu)成。C從 2199：整數(shù)幾十中除twenty，thirty, forty，fifty，e

25、ighty為特殊形式外，sixty，seventy，ninety都是其個(gè)位數(shù)形式后添加后綴-ty構(gòu)成。表示幾十幾時(shí)，在幾十和個(gè)位基數(shù)詞形式之間添加連字符“- 21 twenty-one 76 seventy-sixD百位數(shù)：1-9基數(shù)詞形式加“hundred，表示幾百，在幾十幾與百位間加上and101 a hundred and one 320 three hundred and twenty 648 six hundred and forty-eightE千位數(shù)以上：從數(shù)字的右端向左端數(shù)起，每三位數(shù)加一個(gè)逗號(hào)“，。從右開(kāi)場(chǎng)，第一個(gè)“，前的數(shù)字后添加 thousand，第二個(gè)“，前面的數(shù)字后添

26、加 million，第三個(gè)“，前的數(shù)字后添加 billion。然后一節(jié)一節(jié)分別表示，兩個(gè)逗號(hào)之間最大的數(shù)為百位數(shù)形式。例：2,648 two thousand six hundred and forty-eight。16,250,064 sixteen million two hundred and fifty thousand sixty-four。5,237,166,234 five billion，two hundred and thirty-seven million，one hundred and sixty-six thousand，two hundred and thirty-f

27、ourF基數(shù)詞在表示確切的數(shù)字時(shí)，要用百、千、百萬(wàn)、十億的單數(shù)形式；但是，當(dāng)基數(shù)詞表示不確切數(shù)字，如成百、成千上萬(wàn)，三三兩兩時(shí)，那么以復(fù)數(shù)形式出現(xiàn)。例：four hundred boys There are hundreds of people in the hallThey went to the theatre in twos and threes注：several+ hundred/thousand/million /billion+復(fù)數(shù)名詞eg：There are several hundred students.G表示人的不確切歲數(shù)或年代，用幾十的復(fù)數(shù)形式表示。1) 表年齡: in

28、ones + 整十的復(fù)數(shù), 表示在某人幾十歲時(shí) 例：He became a professor in his thirties他三十多歲時(shí)成為了教授在他四十歲時(shí): _ 2) 表示年代: in the + 年份的復(fù)數(shù),在幾世紀(jì)幾十年代.例：It was in the 1960s那是在二十世紀(jì)六十年代。 H基數(shù)詞的句法功能例：基數(shù)詞在句中可作主語(yǔ)、賓語(yǔ)、定語(yǔ)、表語(yǔ)、同位語(yǔ)。The two happily opened the box作主語(yǔ) I need three altogether作賓語(yǔ)Four students are playing volleyball outside作定語(yǔ) We are

29、 sixteen作表語(yǔ)They three tried to finish the task before sunset作同位語(yǔ)拓展：常見(jiàn)的數(shù)字符號(hào)和等式的讀法：=等于號(hào)讀作 equals，+加號(hào)讀作 plus或and，-減號(hào)讀作minus，×乘號(hào)讀作times 或multiplied by，÷除號(hào)讀作divided by。例：3+2=5讀作Three plus two equals或isfive./Three and two is或equalsfive./Three and two makes five.5-3=2讀作 Five minus three equals或is

30、two.8×7=56讀作Eight times seven equals或isfifty-six./Eight multiplied by seven is fifty-six.10÷5=2讀作Ten divided by five equals或istwo.典例精講：1.2019·東營(yíng)When he arrived at the airport，Lee Minho found that _ fans were waiting for him there.A.hundred B.hundreds C.hundred of D.hundreds of2.2019&#

31、183;山西Jack，I want to go to _ to see a dentist.Could you tell me the address?No problem.A.Room 606 B.No.2 Hospital C.Fifth Avenue3.2019·淮安She enjoys collecting. She has collected over three_ stamps.A.hundred B.hundreds C.hundred of D.hundreds of4.2019·蘭州Please turn to Page _ and read the _

32、story.A.Ten;two B.Ten;second C.Tenth;second D.Tenth;two5.2019·南寧They are the students of_ .A.grade 7 B.Grade 7 C.7th grade D.Grade 7th2. 序數(shù)詞:表示順序的詞稱為序數(shù)詞。序數(shù)詞的主要形式：A從第一至第十九：其中，one first， two second， three third， five fifth，eighteighth，nineninth，twelve twelfth為特殊形式，其它的序數(shù)詞都是由其相對(duì)應(yīng)的基數(shù)詞后面添加“th構(gòu)成。例如： s

33、ix sixth、nineteen nineteenthB從第二十至第九十九：整數(shù)第幾十的形式由其對(duì)應(yīng)的基數(shù)詞改變結(jié)尾字母y為i，再加“eth構(gòu)成。twentytwentieth thirtythirtieth 第四十 第五十 表示第幾十幾時(shí)，用幾十的基數(shù)詞形式加上連字符“和個(gè)位序數(shù)詞形式一起表示。thirty-first 第三十一 fifty-sixth 第五十六 seventy-third 第七十三 ninety-ninth 第九十九C第一百以上的多位序數(shù)詞：由基數(shù)詞的形式變結(jié)尾部分為序數(shù)詞形式來(lái)表示。one hundred and twenty-first 第一百二十一；one thou

34、sand，three hundred and twentieth 第一千三百二十D.序數(shù)詞可以用縮寫(xiě)形式來(lái)表示。主要縮寫(xiě)形式有。firstlst second2nd third3rd fourth4th sixth6th twentieth20th twenty-third23rd注：lst，2nd，3rd為特殊形式，其它的都是阿拉伯?dāng)?shù)字后加上th。E序數(shù)詞的句法功能：序數(shù)詞在句中可作主語(yǔ)、賓語(yǔ)、定語(yǔ)和表語(yǔ)。The second is what I really need作主語(yǔ) He choose the second作賓語(yǔ)We are to carry out the first plan.

35、作定語(yǔ) She is the second in our class作表語(yǔ)序數(shù)詞前常要加定冠詞 the；但假設(shè)序數(shù)詞前出現(xiàn)不定冠詞a或an時(shí),那么表示“再一“又一。 Weve tried it three timesMust we try it a fourth time? 我們已經(jīng)試過(guò)三遍了還必須試一次第四次嗎？表編號(hào) 構(gòu)造:名詞首字母要大寫(xiě) + 基數(shù)詞 = the +序數(shù)詞 +名詞Lesson One = the first lesson the fifth page=Page 5five the twenty-first room=Room 21twenty-one典例精講：6.2019

36、·孝感I hear your pen pal is visiting Wuhan again. Is it the _ time for him?Yes，and he will come for a third time next spring.A.first B.second C.third D.fourth7.2019·孝感Today is the boys _ birthday. He is 12 years old.A.twelve B.twelvth C.twelfth D.the twelfth8.2019·天津 _ month of the year

37、 is May.A.Two B.The second C.Five D.The fifth9.2019·涼山Have you ever come to Xichang before?Yes.This is my _ visit to Xichang，I have come here twice before.A.two B.second C.three D.third10.2019·成都Which month of the year do you like?July，the _ month because summer vacation begins in this mon

38、th.A. second B.seventh C.ninth二、時(shí)刻表示法1. 表示幾點(diǎn)鐘用基數(shù)詞可以加oclock,也可省略：5:00 讀作 five oclock 或 five2. 表示幾點(diǎn)過(guò)幾分，在分鐘后加past，再加小時(shí) 例；five past seven 七點(diǎn)過(guò)五分 half past six 六點(diǎn)半 a quarter past eight 八點(diǎn)過(guò)一刻3. 表示幾點(diǎn)差幾分，在分鐘后面加to，再加小時(shí)例：ten to eight 差非常八點(diǎn)七點(diǎn)五非常 a quarter to twelve 差一刻十二點(diǎn)十一點(diǎn)四十五分差二非常六點(diǎn) 4.在日常生活中， 以小時(shí)、分種為單位分別讀出數(shù)字：

39、例：14:03 讀作 fourteen o three 18:30 讀作 eighteen thirty 三、年月表示法1.世紀(jì)=定冠詞+序數(shù)詞+century表示，也可以用定冠詞+百位進(jìn)數(shù)+s表示the sixth/6th century=the 500s 公元六世紀(jì) the 1900s 二十世紀(jì) the 1600s 十七世紀(jì)2. 年代用定冠詞+基數(shù)詞+十位整數(shù)的所有格或復(fù)數(shù)形式構(gòu)成例：in the 1930s/in the 1930sin the thirties of the twentieth century或 in the nineteen thirties在二十世紀(jì)三十年代；在十九

40、世紀(jì)六十年代 3. 表示某年代的早期、中期和晚期，可以在定冠詞后，年代前添加 early，mid-，latein the early 1920s 在二十世紀(jì)二十年代早期 in the mid-1950s 在二十世紀(jì)五十年代中期4. 年月日表示法A年份用基數(shù)詞表示，一般為阿拉伯?dāng)?shù)字：1949 讀作 nineteen hundred and forty-nine 或 nineteen forty-nine1800 讀作 eighteen hundred 1902 讀作 nineteen hundred and two或 nineteen o two表示在哪一年，一般在年數(shù)前加介詞in，eg: in

41、 2019 在2019年理解使用year時(shí)，year放在數(shù)詞之前in the year two hundred fifty-three B.C. 在公元前253年B. 月份，在哪個(gè)月，用介詞in加第一個(gè)字母大寫(xiě)的月份詞：例如：in May在五月；月份常用縮寫(xiě)形式表示：縮寫(xiě)形式除May，June，July外，其它的月份都由其前三個(gè)字母表示，但September除外。JanuaryJan FebruaryFeb MarchMar. AprilApr AugustAug SeptemberSept OctoberOct NovemberNov DecemberDec注：這里縮寫(xiě)形式后面加點(diǎn)不能省略C

42、日期 在詳細(xì)哪一天要添加介詞on。National Day is on Oct. 1.October first也可以表示為 National Day is on the 1st of OctoberMay 5th 五月五日讀作May fifth 也可以表示為the fifth5thof MayMar. 1st 讀作March first或 the first of March注：通常情況下morning，afternoon，evening等詞前用介詞in。但是，當(dāng)這些詞前后有一修飾限定的詞作為定語(yǔ)，把它們限定為某一天早晨、下午或晚上時(shí)，介詞應(yīng)改為on。這里的修飾限定詞可以是介詞短語(yǔ)、名詞、形

43、容詞、定語(yǔ)從句等。 例：On a cold morning，the old man died lonely in his houseThe accident happened on the afternoon of July 7We are to have a small test on Monday morning四、分?jǐn)?shù)表示法.1.構(gòu)造: a.分子用基數(shù)詞,分母用序數(shù)詞 .b.當(dāng)分子大于1時(shí),分母加復(fù)數(shù). 3/4 three fourths或 three quarters 1/3 one third或a third 1/2 a half = one second 1 1/2 one and

44、 a half2.注意:a.當(dāng)分?jǐn)?shù)后面接可數(shù)名詞時(shí)，假如分?jǐn)?shù)表示的值大于1，名詞用復(fù)數(shù)；<1，名詞用單數(shù)。1 1/2 hours 一個(gè)半小時(shí)讀作 one and a half hours 4/5 meter 五分之四米2 3/4 mete rs 二又四分之三米讀作two and three-fourths metersb.分?jǐn)?shù)詞作主語(yǔ)時(shí), 謂語(yǔ)動(dòng)詞根據(jù)分?jǐn)?shù)詞后面的名詞來(lái)確定.例：Two fifths of the milk _be drunk by Tom . One third of the students _be girls .五 、小數(shù)表示法1. 小數(shù)用基數(shù)詞來(lái)表示，小數(shù)點(diǎn)讀作

45、point，o讀作 zero或oou，整數(shù)部分為零時(shí)，可以省略不讀。0.4 zero point four或point four 零點(diǎn)四 10.23 ten point two three 十點(diǎn)二三25.67 twenty-five point six seven 二十五點(diǎn)六七 l.03 one point o three 一點(diǎn)零三2. 當(dāng)數(shù)字值大于1時(shí)，小數(shù)后面的名詞用復(fù)數(shù)，數(shù)字值小于1時(shí)，小數(shù)后面的名詞用單數(shù)。1.03 meters 一點(diǎn)零三米 0.49 ton 零點(diǎn)四九噸 l.5 tons 一點(diǎn)五噸六、百分?jǐn)?shù)表示法 : 百分?jǐn)?shù)=基數(shù)percent表示 這里的percent不用復(fù)數(shù)形式。50 fifty percent 3 three percent 0.12 zero point one two percent七、數(shù)量表示法1. 表示長(zhǎng)、寬、高、面積等： 用基數(shù)詞+單位詞meter，foot，inch，kilo