好文档就是一把金锄头!
欢迎来到金锄头文库![会员中心]
电子文档交易市场
安卓APP | ios版本
电子文档交易市场
安卓APP | ios版本

第四章数词,连词.doc

16页
  • 卖家[上传人]:桔****
  • 文档编号:544053535
  • 上传时间:2023-07-28
  • 文档格式:DOC
  • 文档大小:206.51KB
  • / 16 举报 版权申诉 马上下载
  • 文本预览
  • 下载提示
  • 常见问题
    • 学大教育第四章 数词一、基数词与序数词[高考试题]①It is not rare in _______ that people _______ fifties are going to university for further education. (1999,上海) A. 90s; the B. the 90s; / C. 90s; their D. the 90s; their②_______ cave that George has discovered in his life time is near the Alps. (1992,上海) A. The hundredth B. The hundred C. Hundredth D. A hundredth③The hero of the story is an artist in his _______. (1991) A.thirtieth B.thirty C.thirtys D.thirties④He looked quite healthy though he was_______.(1985,上海) A.in seventy B.in his seventies C.at seventies D.at the age of seventyKeys:①D ②A ③D ④B数词是用来表示事物的数量和顺序的词,分为基数词和序数词两种。

      一)基数词表示数量的词叫基数词1---12的基数词是独立单词;13---19的基数词都是以-teen结尾的,要注意thirteen,fifteen,eighteen的拼法稍有不同;20一90的十位数,以后缀-ty结尾,要注意twenty,thirty,fifty,eighty的特殊点教你巧学巧记:巧记100内的基数词基数词不难记,找清规律很容易,十二以内词各异;十三数到十九去,后加-teen莫忘记二十、三十……至九十,整十之后有-ty;要说“几十几”,中间“-”号别丢弃,hundred是“一百”,请你记住莫大意1.基数词的读法1)三位数的读法:第一个数字+hundred+and+后面的一位或两位数字如:107→one hundred and seven;765→seven hundred and sixty-five2)1,000以上的数的读法:先从后向前数,每三位数加一个逗号,第一个逗号前的数字用thousand(千),第二个逗号前的数字用million(百万),用 "几十thousand"表示 "几万",以 "几百thousand"表示 "几十万",用 "几十million"表示 "几千万",用"几百million"表示 "几亿"。

      如:13,789,653→thirteen million seven hundred and eighty-nine thousand six hundred and fifty-three教你巧学巧记:读数的诀窍有一首歌诀,可以帮助我们迅速地用英语读出长数字从右向左三逗开, 一逗千,二逗百万,三逗就是十万万;左右三位分开读,保你又快又喜欢①“从右向左三逗开,”,指从右向左把长数字每三位用逗号分开如:10,000;225,430;51,000,000,000②“一逗千,二逗百万,三逗就是十万万;”指从右向左的第一个逗号表示“千”(thousand);第二个逗号表示“百万”(million);第三个逗号表示“十万万”(billion,即十亿) ③“左右三位分开读,保你又快又喜欢指读数时从左向右,每三位三位地按三位数的读法读,遇到有逗号时就分别加上该逗号所表示的那个英语单词如:457→four hundred and fifty-seven102→one hundred and two800→eight hundred3,024→three thousand and twenty-four2,007,009→two million seven thousand and nine51,000,000,000→fifty-one billion400,001→four hundred thousand and one2.数词的复数形式大家知道,基数词和序数词一般都以单数形式出现,但在下面几种情况下却要用复数。

      1)表示几十岁时如“二十多岁”说twenties,表示的是20岁到29岁依次类推,thirties表示“三十几岁”,forties表示“四十几岁”,但“十几岁”不可说tens,而要说teens,指13岁至19岁如:He died in his thirties.She is in her teens.2)表示几十年代时,如:“二十世纪八十年代”写成1980s或1980’s,均读作nineteen eighties,指的是1980至1989年这十年间,需注意的是,年代用文字表示时则不可用-'s形式如:.Great changes took place in the l970s.History has entered the eighties.3)表示不确定数目时,这时要在million,thousand,hundred等词后加上-s并与of连用,表示大约多至“数以……计”,但millions of等前不能再加基数词,却可加some,several等表示不确定数目的修饰语如:Millions of other stars are even bigger and brighter than the sun.Some hundreds of new buildings have been put up here this year.4)在分数中,当基数词(表示分子)大于one时,序数词(表示分母)要用复数,两者之间用不用连字符号均可。

      如:Two thirds of the teachers in our school are women.She has spent four-fifths of her money.5)当基数词用作可数名词或用于某些固定词组中时,也要用复数如:How many sevens are there in forty-nine?They arrived by twos and threes.他们三三两两的来了Wait a minute.I’ll be finished in two twos.请等一下,我马上就来3.数词和名词单数一起作定语,中间用连字符连接a seven-year-old girl 一个七岁的女孩 a two-thousand-word article 一篇2千字的文章4.当基数词和序数词同时修饰一个名词时,序数词一般放在基数词前;但如果序数词充当描绘性修饰时,则放在基数词后He is one of the first five students. 他是前五名的学生之一He won three first prizes. 他获得三次第一名二)序数词表示数目顺序的词叫序数词。

      1.序数词的构成规则1)基数词变为序数词一般是在基数词后加上“th”例如:fourth,seventh,hundredth2)第一、第二和第三的序数词分别是first,second和third3)从第四起均是在相应的基数词后加上“th”,但加“th”时还须注意以下四点:①eight在变为eighth时少了一个字母t;nine在变为ninth时去掉了一个字母“e”②以“ve”结尾的基数词变序数词时,须将“ve”改为“f”,然后再加“th”例如:five→fifth,twelve→twelfth③十位整数(以-ty结尾)的序数词构成,是先将“y”改为“ie”,然后结尾再加上“th”例如:twenty→twentieth,thirty→thirtieth④从二十一起的“几十几”均只须变个位的基数词为序数词就行了例如:twenty-two→twenty-secondforty-four→forty-fourthsixty-nine→sixty-ninth教你巧学巧记:基数词变序数词歌诀基数词变为序数词绝大多数是直接加-th,但有少数变化是不规则的虽然不规则的少,但同学们却最容易弄错如把fifth写成fiveth,把ninth写成nineth。

      记住下面这首歌诀可以使你们克服诸如此类的错误基变序,很容易,结尾加上“th”一二三特殊记,结尾各是t、d、d八减t,九去e,f来把ve替,y改为“ie”,结尾仍有“th”若是遇到几十几,只变个位就可以2.序数词前不用定冠词的情况1)表示顺序的语气很弱,具有“又一”、“再一”的意思时,其前要用不定冠词,不用定冠词如:l.He cast the net a second time.2.A third bullet passed.2)序数词前己有指示代词、物主代词、名词所有格或every时,不用定冠词如:l.He made his first set in an old box.2.Berlin in 1929 held a public celebration on Einstein’s fiftieth birthday.3)在表示分数的序数词前不用定冠词如:l.From then on Bashi toured three-fourths of Beijing.2.Two-thirds of the area is covered by trees.4)数词与名词构成复合名词时,不用定冠词。

      如:l.There is a first-class hotel over there.2.He went to a second-hand bookshop.5)序数词用作副词时,不用定冠词如:l.Why did the captain first hesitate in letting the boy risk climbing the tree?2.First come,first served.6)在一些由序数词构成的固定词组里不用定冠词如:1.at first 2.first of al1 3.from first to last二、数词用于编号表示编号,可以用基数词,也可以用序数词,即:事物名词(不加冠词)+基数词;the+序数词十事物名词如:Lesson Twelve=the Twelfth Lesson 第十二课Part One→the First Part第一部分World War I=the First World War第一次世界大战如英语编号中数字较长,一般用基数词表示如:Room 506 第五0六号房间 page 265 第二百六十五页Telephone NO.8297976 号码8297976三、小数、分数和百分数的表达方式[高考试题]①China is _______ larger than the United States. (1990,上海)A. one six B. one sixth C. one sixes 。

      点击阅读更多内容
      关于金锄头网 - 版权申诉 - 免责声明 - 诚邀英才 - 联系我们
      手机版 | 川公网安备 51140202000112号 | 经营许可证(蜀ICP备13022795号)
      ©2008-2016 by Sichuan Goldhoe Inc. All Rights Reserved.