中考专项复习之数词ppt课件.ppt
1. 数词的种类数词的种类.3. 基数词的用法基数词的用法.2. 基数词的拼写基数词的拼写.一知识目标一知识目标二能力目标二能力目标能够在各类题型中正确使用基数词能够在各类题型中正确使用基数词.数数词词基数词基数词序数词序数词(表示数目多少)(表示数目多少)(表示顺序先后)(表示顺序先后)1 1-12_记记2 13-19以以_结尾结尾 注意:注意: 14,16,17,19 都是在个位数后直接加都是在个位数后直接加_ 13,15,18,需要特殊记需要特殊记:_3 整十的基数词以整十的基数词以_结尾。结尾。 注意:注意:60,70,90直接在个位数词后加直接在个位数词后加_ 20,30,50,80 特殊记特殊记_ 40一定要注意,必须去一定要注意,必须去_, 再加再加_4 几十几需要在十位和个位之间加几十几需要在十位和个位之间加_5 几百零几,几百几十几,要在百位后加几百零几,几百几十几,要在百位后加_ 特殊记特殊记 teen teen thirteen, fifteen, eighteen ty ty twenty,thirty,fifty,eighty u ty 连字符连字符- and Practise 1 、七、七、二、二、八、八、五、五、十二、十二、十一、十一、三、三、十三、十三、十五、十五、二十、二十、五十、五十、三十、三十、四十、四十、百、百看谁译得快:看谁译得快:seventwoeightfivetwelveeleventhreethirteenfifteentwentyfiftythirtyfortyhundredforty-five3145576689fifty-sevensixty-sixeighty-nine457890608389threethree hundred hundred andand eighty-nine eighty-ninefour hundred four hundred andand fifty-sevenfifty-seveneight hundred eight hundred andand ninetyninetysix hundred six hundred andand eighteight 12位数之内的读写位数之内的读写 1 先先_,从右往左,从右往左,_. 2 从高位起读写(即从左往右读写),每节是多从高位起读写(即从左往右读写),每节是多 少就读写多少,少就读写多少, 其后加其后加_ 读写完该节后,后有九位,加单位读写完该节后,后有九位,加单位_ 读写完该节后,后有六位,加单位读写完该节后,后有六位,加单位_ 读写完该节后,后有三位,加单位读写完该节后,后有三位,加单位_ 3 添加添加and的情况:的情况: _之间加之间加and 如果十位为如果十位为0,_之间加之间加and 节前有节前有0,_. 节后无论几个节后无论几个0,读写一个,读写一个_ 注意:千百之间注意:千百之间 不加不加and分节分节三位一节三位一节单位单位 billion million thousand 百位和十位百位和十位 百位和个位百位和个位 不读不读 andPractise 2 Can you read them?230043925612345678901 9200300060402,300,439,256 two billion three hundred million four hundred and thirty nine thousand two hundred and fifty-six twelve billion three hundred and forty-five million six hundred and seventy eight thousand nine hundred and one12,345,678,901920,030,006,040 nine hundred and twenty billion and thirty million and six thousand and forty 复习:复习:Hundred/thousand/million/billion 1 前有具体的基数时,四个单位做前有具体的基数时,四个单位做_词。词。 即即 基数基数+四单位四单位 ,这时候,四个单位,这时候,四个单位_复数变化复数变化 如若后跟名词,如若后跟名词,_,或者加上,或者加上_再跟名词。再跟名词。 基数基数+四单位四单位 .百百/千千/百万百万/十亿十亿 基数基数+四单位四单位+名词名词 .百百/千千/百万百万/十亿十亿. 基数基数+四单位四单位+ of the +名词名词 200 _ 200名学生名学生 _ _2 前无具体的基数,四个单位或者单独用,或者是概数修前无具体的基数,四个单位或者单独用,或者是概数修饰,这个时候,四个单位为饰,这个时候,四个单位为_词。这时,四个单词。这时,四个单位必须加位必须加_.其后若跟名词,必须加上其后若跟名词,必须加上_. 数数 名名 直接加直接加 two hundred of the two hundred of the students 无无 two hundred students of s数百万_数百万._数百万棵树_一些百/几百_许多千_ 1. My father has got eight _stamps from all over the world. A. hundreds B. hundred C. hundreds of 2. The concert attracted _ students last night. A. thousand B. two thousands C. thousands of BC millions many thousands some/a few/several hundreds millions of trees millions of.Guide 3 想一想想一想什么时候用到基数词?什么时候用到基数词?1 表示数量时2 年用基数词表示3 在多少世纪多少年代4 表示年龄时5 表示钟点时6 百分数,小数,分数7 其他的固定用法 基数复习之一:年份的表达法基数复习之一:年份的表达法1875-eighteen seventy-five 年份读法年份读法1 1 要用基数词,每两位一读,如果年份以要用基数词,每两位一读,如果年份以0000结尾,结尾, 用用hundred表示。表示。2 2 看成数字读看成数字读1997- nineteen ninety-seven1682- sixteen eighty-two 1900- nineteen hundred 2000- two thousand/twenty hundred 1509(1)If it is an amount(数量)(2) If it is a date(年代年代)(3) If it is a telephone number(电话号码) one thousand five hundred and nine“0” 在英语里读成在英语里读成 “o” or “zero”基数复习之二:世纪年代表达基数复习之二:世纪年代表达在多少世纪多少年代:在多少世纪多少年代:因为是一段时间,所以用因为是一段时间,所以用_因为特指,所以加因为特指,所以加_因为年代为因为年代为10年,所以加年,所以加_, 也可以加也可以加_世纪读写译要特别注意世纪读写译要特别注意:写英文时需写英文时需_译汉语时需译汉语时需_读英文时年代需读英文时年代需_eg: 在在20世纪世纪40年代年代_ in the 2010s_ in the 1940s / in the 1940s读作读作in the nineteen forties在在21世纪世纪10年代年代 in the ss -1 +1 读整十复数读整十复数 in the +世纪年代(年代加世纪年代(年代加s/s)基数复习之三:基数复习之三: 年龄的表达年龄的表达1 他他18岁了岁了_ _ _2 有关年龄的固定短语:有关年龄的固定短语: 在某人多少岁时在某人多少岁时_ 在某人几十多岁时在某人几十多岁时_ eg. 1Tom could play the piano _(在在6岁时岁时)2 Susan got married _(在她(在她30多岁时)多岁时)3 A _schoolboy, Li Ming, played the piano at the end of the party. A. 12-year old B. 12-years-old C. 12-year-oldHe is eighteen years oldHe is eighteenHe is an eighteen year-old boy at the age of in ones +整十的复数整十的复数 C in her thirties at the age of 6基数复习之四:钟点表达法基数复习之四:钟点表达法1 _法:先读小时,再读分钟,数字是几读几。零读_;整点可以加上_ 4:00 _ 4:05_ 4:30_ 4:46_2 _法:先读分钟,再读小时.此法必须借助于介词past或者to。具体为: (1) 小于或者等于小于或者等于30分时,用介词分时,用介词_(过)(过) 分钟分钟+past+时钟时钟 几点过几分几点过几分 5:10(5点过点过10分)读成分)读成 2:02 (2点过点过2分)分) 读成读成 8:26 (八点过(八点过26分)读成分)读成 ten past fivetwo past two twenty six past eight four zero/o five four/four oclock oclock zero/o 顺读顺读 four forty-six four thirty 逆读逆读 past(2) 大于大于30分用介词分用介词_ (中文译为(中文译为“差差”)如:如:7:47 (差(差13分到八点)分到八点) 读成读成 1:58(差(差2分到两点)分到两点) 读成读成 two to two thirteen to eight注意:半小时还可以用注意:半小时还可以用_; 15分钟还可以用分钟还可以用_9:30 _ _ 7:45 _ _ 说明说明: :使用逆读法使用逆读法, 15, 15分、分、4545分不用分不用fifteen minutes,30fifteen minutes,30 分不用分不用thirty minutes, othirty minutes, oclockclock只用于整点之后。只用于整点之后。 to quarter half nine thirty half past nine seven forty-five a quarter to eight即:即:60-分钟数分钟数 +to+钟点数钟点数+1:中文译为:差几分到几点中文译为:差几分到几点Practise :Can you read them?1:30 2:15:3:456:387:259:50one thirtyhalf past onetwo fifteena quarter past twothree forty-fivea quarter to foursix thirty-eighttwenty- two to seventwenty five past sevenseven twenty-fiveten to tennine fifty基数词复习之五:百分数和小数基数词复习之五:百分数和小数1 百分数表达:百分数表达:百分之几百分之几_百分之几的百分之几的._注意:百分数作主语,谓动取决于注意:百分数作主语,谓动取决于_ eg:40%_ 40%的学生的学生_ eg, Eight-five percent of the girls _(study) hard. Thirty percent of the time _(have) been used up.2 小数表达:小数表达:小数点前是几读几,小数点后的数字要小数点前是几读几,小数点后的数字要_ 小数点读作:小数点读作:_eg 12.365 读写作:读写作:_ 3.06 读写作读写作:_ of后的名词后的名词 forty percent of the students forty percent 基数词基数词+percent+of 基数词基数词+percent study has 依次读依次读 point twelve point three six five three point zero six 基数词复习之六:几个半的表达基数词复习之六:几个半的表达1 一一.半半 one+and +a half +_ one/a /an +_+and a half eg 一个半小时一个半小时_ _2 几几.半半 数词数词+and +a half +_ 数词数词+_+and +a half eg 两个半小时两个半小时_ _ one one andand a half a half hourhours s= one = one hourhour andand a half a half two two andand a half hour a half hours s= two hour= two hours s andand a half a halfThe old man drank_(一瓶半一瓶半) of beer. 名词复数名词复数 名词单数名词单数 名词复数名词复数 名词复数名词复数 one and a half bottles one/a bottle and a half基数词复习之七:倍数表达法基数词复习之七:倍数表达法1 一倍一倍_;两倍两倍_; 三倍以上三倍以上_.2 A是是B的多少倍:的多少倍: _ _ _A +be+倍数倍数+as +adj+as +BA +be+倍数倍数+the +n+of +BA +be+倍数倍数+adj比比 +than +B 这条河宽是那条河的三倍这条河宽是那条河的三倍/这条河比那条河宽两倍这条河比那条河宽两倍_The river is three times as wide as that one The river is three times the width of that oneThe river is twice wider than that one once twice 基数词基数词+times eg.1. This building is _ that building. A. three time as tall as B. twice taller as C. three times as taller as2. 我的箱子比你的重六倍我的箱子比你的重六倍! My box is _ yours. six times heavier thanseven times as heavy asseven times the weight of 基数词复习之八:计量法基数词复习之八:计量法1主语+be + 基数+metres/kilometers +(长宽高深厚远.) 2 主语+be+基数+kilos/pounds +heavy这棵树八米高这棵树八米高_The tree is eight meters tall/in heightThe height of the tree is eight metersIt s an 8-meter-tall tree=in length/ width/height/depth/thickness/. long/wide /high/tall /deep/thick/away.基数词其他热门考点基数词其他热门考点1 十分钟的步行十分钟的步行/骑乘骑乘/驾驶驾驶 _/.2 在原来的基础上再多在原来的基础上再多. _ eg.再多一个再多一个_ 再多一本书再多一本书_ 再多十个再多十个 _ 再多十个学生再多十个学生_ ten minutes walk/ ride/drive数词数词+more=another+数词数词 another one=one more another book =one more book another ten=ten more another ten students= ten more students1. There are over nine _ workers in the factory, but _ of young people hope to work in it. A. hundred; hundreds B. hundreds; hundreds C. hundreds; hundred D. hundred; hundred2. The city changed a lot _. A. in 1980s B. in the 1980s C. in the 19803. He got the prize _. A. in his fifties B. in fifties C. in his fifty4 Its already 7:40 now. When will the film start? _. We still have five minutes. A. A quarter to seven B. Seven past forty-five C. A quarter to eight5 He came to China _. A. at the age of 20 B. when he is 20 C. at age of 206 The river is about _. A. 6,000 meters long B. 6,000-meters-long C. 6,000-meter-long7Have you finished your report yet? No,I will finish it in 10 minutes A.another B.Other C.more D.less 8. Every day the old woman sits here for _. A. one and half hour B. one and a half hour C. one hours and a half D. one and a half hours9. She has _ (十个月大)(十个月大)baby. a ten-month-old 1 总结序数词的变化规律总结序数词的变化规律2 归纳序数词的用法归纳序数词的用法 下节课比一比下节课比一比 Homework教师寄语1 Two heads are better than one 2 Four eyes see more than two三个臭皮匠赛过诸葛亮三个臭皮匠赛过诸葛亮集思广益集思广益