英语数词的各种表示方法课件.ppt

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1、Numbers 专项复习专项复习 数词数词二二.数词的各种表示法数词的各种表示法一、时间的表达方式一、时间的表达方式 1 1直接表达法。即先读小时，再读分钟直接表达法。即先读小时，再读分钟 如：如：4 4：10 10 读成读成 8 8：36 36 读成读成2 2逆读法。即先读分钟，再读小时逆读法。即先读分钟，再读小时分钟小于分钟小于3030的用的用“pastpast”，中文译为中文译为“过过”。即分钟即分钟+past+past+时钟，时钟，中文译为中文译为“几点过几分几点过几分”如：如：5:105:10（5 5点过点过1010分）读成分）读成 2:02 2:02（2 2点过点过2 2分）分）读

2、成读成four tenfour teneight thirty-sixeight thirty-sixten past fiveten past fivetwo past twotwo past two分钟超过分钟超过3030（不包括（不包括3030分钟）用分钟）用 “toto”（中文译为（中文译为“差差”）即即“60-60-分钟数分钟数 +to+to+钟点数钟点数+1+1”（中文译为：几点差几分中文译为：几点差几分）如：如：7 7：45 45（八点差（八点差1515分）分）读成读成 1 1：5858（两点差（两点差2 2分）分）读成读成3 3半小时用半小时用“halfhalf”,一刻钟用一刻

3、钟用“quarterquarter”。注意：一刻钟注意：一刻钟 a quarter a quarter 三刻钟三刻钟 three quarterthree quarters s 如：如：4:30 4:30 读成读成 9:45 9:45 读成读成 a quarter to tena quarter to tentwo to twotwo to twohalf past fourhalf past fourfifteen to eightfifteen to eight特别注意：一个半小时的表达方式：特别注意：一个半小时的表达方式：one/an hourone/an hour and a half

4、 and a half one and a half one and a half hourshoursCan you read them?Can you read them?1:30 2:15:3:456:387:259:50one thirtyone thirtyhalf past onehalf past onetwo fifteentwo fifteena quarter/fifteen past twoa quarter/fifteen past twothree forty-fivethree forty-fivea quarter/fifteen to foura quarter

5、/fifteen to foursix thirty-eightsix thirty-eighttwenty-two to seventwenty-two to seventwenty five past seventwenty five past sevenseven twenty-fiveseven twenty-fiveten to tenten to tennine fiftynine fifty三年半的两种表达方式三年半的两种表达方式:three yearsthree years and a half and a halfthree and a half three and a ha

6、lf yearsyears1.1.It Its already 7:40 now.When will the s already 7:40 now.When will the film start?film start?_.We still have five minutes._.We still have five minutes.A.A quarter to seven A.A quarter to seven B.Seven past forty-five B.Seven past forty-five C.A quarter to eight C.A quarter to eight1

7、 15 5分子分子 基数词基数词分母分母 序数词序数词one fifthone fifth2 27 7分子分子 1 1分母分母 +s+stwo seventhtwo sevenths s1 14 4分子分子 a a分母分母 quarterquartera quartera quarter3 34 4three quarterthree quarters s1 12 2a halfa half1 13 3threethree andand one third one third3 3基数词基数词 +and+and+分数分数二二.数词的表示法数词的表示法 分数百分数分数百分数分数、百分数、小数的表

8、达方法分数、百分数、小数的表达方法 （以分数（以分数考法较为常见）考法较为常见）1.1.分数分数:分子用基数词，分母用序数词，分分子用基数词，分母用序数词，分子大于一，分母加子大于一，分母加s s1/2 1/2 读作读作 2/3 2/3 读作读作1/13 1/13 读作读作 3/4 3/4 读作读作2 2小数小数,百分数的读法百分数的读法:小数点读成小数点读成point 3.6 point 3.6 读作读作百分号百分号%读成读成 percentpercent 50%50%读作读作one secondone second（a halfa half）two thirdtwo thirds s 或者

9、或者 twotwo-thirdthirds sone thirteenthone thirteenththree fourthsthree fourths或者或者three three-quarter quarters sthree point sixthree point sixfifty percentfifty percent80%80%基数词基数词 +percent percenteighty percenteighty percenthalf half/(百百)分数分数 +of+of+可数名词复数可数名词复数 谓语动词用复数谓语动词用复数half half/(百百)分数分数 +of+

10、of+不可数名词不可数名词谓语动词用单数谓语动词用单数3.783.78three three pointpoint seven eight seven eight1.1._ of the students _ boys in Class _ of the students _ boys in Class A.Two three;are B.Two A.Two three;are B.Two thirds;are thirds;are C.Two thirds;is C.Two thirds;is2.2._ of her money _ spent on clothes._ of her mon

11、ey _ spent on clothes.A.Two three;are B.Two A.Two three;are B.Two thirds;is thirds;is C.Two third;is C.Two third;is3._ the teachers in our school is about 3._ the teachers in our school is about one hundred,and _ of them are women one hundred,and _ of them are women teachers.teachers.A.The number of

12、;two third A.The number of;two third B.The number of;two thirds B.The number of;two thirds C.A number of;two thirds C.A number of;two thirds一个半小时一个半小时两个半小时两个半小时 two two andand a half hour a half hours s=two hour=two hours s andand a half a half one one andand a half hour a half hours s=one hour=one

13、hour andand a half a half三三.数词的表示法数词的表示法 半的表示法半的表示法1.1.The boy always stays there for _.The boy always stays there for _.A.one and half hour A.one and half hour B.one and a half hour B.one and a half hour C.one and a half hours C.one and a half hours2.2.The old man drank_ beer.The old man drank_ bee

14、r.A.two bottles and a half A.two bottles and a half B.two and a half bottle B.two and a half bottle C.two bottle and a half C.two bottle and a half一倍一倍 onceonce，两倍，两倍 twicetwice，三倍三倍 three timethree times s (三倍或以上三倍或以上 基数词基数词times)times)四四.数词的表示法数词的表示法 倍数倍数 This box is This box is fivefive time time

15、s s asas big big asas that that one.one.=This box is=This box is fourfour time times s big biggerger thanthan that that one.one.A+be+A+be+倍数倍数 +asas+adj.+adj.原原+asas+B.+B.A A是是B B的的 倍倍 C+be+C+be+倍数倍数 +adj.+adj.比比+thanthan+D.+D.C C比比D D 倍倍THANK YOUSUCCESS2023/2/213可编辑1.1.This building is _ that build

16、ing.This building is _ that building.A.three time as tall as A.three time as tall as B.twice taller than B.twice taller than C.three times as taller as C.three times as taller as2.2.我的箱子比你的重六倍我的箱子比你的重六倍!My box is _ My box is _ yours.yours.six times heavier thansix times heavier thanseven times as he

17、avy asseven times as heavy as The winner is _.He is an _ The winner is _.He is an _ boy.boy.A.eight-year-old;eight years A.eight-year-old;eight years oldold B.eight years old;eight-year-B.eight years old;eight-year-oldold C.eight-years old;eight-year-C.eight-years old;eight-year-oldold He came to Ch

18、ina _.He came to China _.A.at the age of 20 A.at the age of 20 B.when he is 20 B.when he is 20 C.at age of 20 C.at age of 20五五.数词的表示法数词的表示法 年龄年龄 The river is about _.The river is about _.A.6,000 meters long A.6,000 meters long B.6,000-meters-long B.6,000-meters-long C.6,000-meter-long C.6,000-meter-

19、long五五.数词的表示法数词的表示法 计量计量be+be+数词数词 +量词量词 +形容词形容词10.He went down to the village which was _miles away from the city.A.three hundreds B.three hundredC.three hundreds ofB.three hundred6The wall is_.Afour meters long Bfour meter long Cfour-meter long7Whats the date today?Its_AMarch the eight BMarch eigh

20、thCeight，March8It happened in the 1040sA in the forties of the eleventh centuryB in the forties of the tenth centuryC in the forty9About_ of the earths surface is covered with water.A.three-fours B.three-fourth C.three-fourthsAfour meters longBMarch eighthA in the forties of the eleventh centuryC.th

21、ree-fourths选择填空。1March is _month of a yearA a three B the third C a third2We will have a meeting at 8:05_Afive to eight Beight five Ceight o five3Eight plus eight is_.Asixteen Bsixty-four Cone4He is an _boyAeight years Beight-year-old Ceight-years-old5We will have a_ walkAten minutes Bten minutes Ct

22、en-minutesB the thirdCeight o fiveAsixteenBeight-year-oldBten minutes六、加减乘除表示法1.“加加”用plus，and或add表示 How much is two plus three?It is fiveTwo and three is equal to five2.“减减”用 minusHow much is ten minus six?3.“乘乘”multiply3X4?How much is three times four?4.“除除”用divide的过去分词形式表示164=?How much is sixteen

23、divided by four?2more还可与a little，a few，a lot，several等词连用（1）There are many more dictionaries on the desk课桌上有许多词典。（2）Would you like some more tea？再喝点茶好吗？4.名词省略 如果前后意思清楚，another或more后面的名词可以省去。如：1I climbed the stairs slowly，carrying a big suitcase，my father following with two more1Tony is going camping

24、with _boys next SundayAlittle two other Btwo little other Ctwo other little Dlittle other two 3Do you know where he found the other two photos？另外两张照片 3.more 1more1）She has got five more electric fans她还有五台电扇。七、七、another,other,moreanother,other,more修饰数词的用法修饰数词的用法1.another A)another+名词单数 B)表“另外的、额外的、附加的时，+few或具体数字的复数 1Have you finished your report yet？No，I will finish it in 10 minutes Aanother BOther Cmore Dless 2The strike may last another three days罢工可能还要持续三天。2.other+复数名词，置于数词之后B)但与定冠词the连用时，other要放在数词前。THANK YOUSUCCESS2023/2/224可编辑