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外研版中考英语 第28讲 介词和数词课件

  • 课件名称:外研版中考英语 第28讲 介词和数词课件
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  • 更新时间:2018-5-21 7:58:42
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    外研版中考英语 第28讲 介词和数词课件
    ④21~99的写法是:十位数加个位数,中间用连字符号“-”连接。如:26 twenty-six;57 fifty-seven ⑤101~999的构成是:百位数与十位数之间用and连接。如:123 one hundred and twenty-three ⑥hundred,thousand,million,billion等词在表示确定数目的时候,直接在前面加基数词;表示不确定数目时,要在它们后面加s,其后还要加of。如: three hundred students三百名学生 thousands of students成千上万的学生 2.基数词的用法 ①表示数量的多少。 ②表示年份。1988读作nineteen eighty-eight ③表示时刻。7:00读作seven o''clock 8:30读作half past eight/eight thirty 3:05读作five past three/three five 5:48读作twelve to six/five forty-eight ④表示顺序。单数名词+基数词,名词的第一个字母通常要大写。如: Class Two,Room 12,NO.3 Middle School ⑤“数词+单数名词”相当于合成形容词作定语(如:a three-year-old girl)。合成形容词中的名词一定是单数。合成形容词不能作表语,后面必须跟上所修饰的名词。 ⑥与表示时间、距离、长度的名词一起构成“数词+单位名词+形容词”,表示事物的形状、年代及距离等。如:ten years old,3600 meters long ⑦“几十”的基数词复数形式可用来表示某人约几十岁或某个年代。如: In his sixties,he rode a bike round the world.在他六十多岁时,他骑自行车环游世界。 The light bulb was invented in the 1870s.灯泡发明于19世纪70年代。 ⑧与another,more连用时,表示在已有基础上再增加—定数量。如: another three hours,two more apples 【例1】 —Excuse me,sir.Here''s a package for Lin Tao.Which room does he live in? —___ B _. A.308 Room B.Room 308 C.The Room 308 D.The 308 Room 点拨:“几号房间”应用“Room+房间号”表示。 【例2】 Linda''s mother looks young,but actually she is in her __ A __.(2013,恩施) A.sixties B.sixtieth C.sixty years old D.sixty 点拨:表示某人约几十岁的时候,应用基数词的复数形式。 高频考点二 序数词 1.序数词的构成 ①序数词多数是由“基数词+th”构成。如:six→sixth,seven→seventh等。 ②以y结尾的整十的数字,先将y改为i,再加-eth。如:fifty→fiftieth,seventy→seventieth等。 ③21以上的非整十的数字,将末位数(即个位数) 改为序数词,其他的位数仍用基数词。如: twenty-one→twenty-first,two hundred and ninety-eight→two hundred and ninety-eighth等。 ④少数的序数词属于特殊情况,而且这类词也常常是考点,大家要特别注意记忆。如: one→first,two→second,three→third,five→fifth,eight→eighth,twelve→twelfth 注意:fourteenth(第十四),fortieth(第四十),ninth(第九),nineteenth(第十九),ninetieth(第九十) 2.序数词的用法 ①表示顺序。序数词表顺序时,其前须用定冠词the,后接单数名词。 如:I''m the first one to arrive here.我是第一个到达这儿的人 注:如序数词前出现人称代词,则不加the。 如:Today is my thirtieth birthday.今天是我三十岁的生日。 ②用于最高级前。 如:John is the second tallest boy in our class.约翰是我们班第二高的男生。 ③分数。分子用基数词,分母用序数词。分子为1,分母用单数,分子大于1,分母用复数。如:one fifth,three fifths。 —些习惯用法:1/4也可表示为a quarter,3/4也可 表示为three quarters,1/2也可表示为a half。 ④带分数的词组作句子的主语时,谓语动词的单复数与分数后的名词保持一致。如: Two fifths of the apple is eaten.这个苹果被吃了五分之二。 Two fifths of the apples are red.五分之二的苹果是红的。 ⑤表示数量上再增加“一”,用:a(an)+序数词+单数名词。如: She had a second child.她有了第二个孩子。 【例3】—What should we do now,Mr.Clark? —Please turn to Page __ A _ and look at the ________ picture.(2013,黄冈) A.Twelve;fifth B.Twelfth;fifth C.Twelve;five D.Twelfth;five 点拨:Page+基数词,且基数词首字母要大写;the+序数词+picture。 【例4】 __ C _ of the students in our class ________ girls. A.Two fifth;is B.Two fifth;are C.Two fifths;are D.Two fifths;is 点拨:分子大于1时,分母用复数,五分之二表示为two fifths;带分数的名词作主语时,谓语单复数与名词的单复数一致。 高频考点三 数词中的难点 1.hundred,thousand,million,billion的运用。在构成具体的数字时,用单数形式。如:two hundred students,表达不具体的多数时用其复数。如:thousands of students(成千上万的学生) 2.与another,more连用时,表示在已有基础上再增加一定数量。如:another three hours或three more hours。 3.“一两天”可表达为:a day or two或one or two days 有关“半”的表达:three years and a half或three and a half years三年半;half an hour半小时;one hour and a half/one and a half hours一个半小时。 【例5】The government of Linyi is building ___ D _ cheap and good houses for the people.(2013,临沂) A.thousand B.thousands C.thousand of D.thousands of 点拨:thousands of为固定搭配,意为“成千上万的”。 一、单项选择 1.In this test,we''re asked to write a passage of about __C__.(2014,宜宾) A.80-words B.80-word C.80 words D.80 words'' 2.—How far is it from Tianjin to Changsha? —It is a __A__ flight from Tianjin to Changsha.(2014,呼和浩特) A.2-hour-long B.2-hours-long C.2 hours'' long D.2 hour long 3.The park is far away from here indeed it''s about __D__ walk.(2014,苏州) A.three hour B.a three hour''s C.a three-hours D.a three-hour 4.They are the students of __B__.(2013,南宁) A.grade 7 B.Grade 7 C.7th grade D.Grade 7th 5.—Where is Class __A__? —It''s on the ________ floor.(2013,天津) A.Six;third B.Sixth;third C.Six;three D.Sixth;three 6.There are seven days in a week and Monday is __A__ day of the week.(2013,新疆) A.the second B.first C.the third D.second 7.It''s said that __D__ of the water around the world ________ polluted.(2013,黄石) A.two third;has B.two thirds;have C.two third;are D.two thirds;is 8.To finish the task,we''ve tried three times,and after dinner we''ll try __B__ time.(2013,安顺) A.the fourth B.a fourth C.fourth D.four 9.The__A__ action films has attracted millions of young people to the cinema.(2013,无锡) A.130-minute B.130-minutes C.130 minute D.130 minutes 10.—Have you finished your today''s work? —No,I need __B__.(2013,天水) A.two another hours B.another two hours C.more two hours D.two other hours 二、根据句意及提示写单词。 11.There are thirty days in April as well as in June and in September.(2013,杭州) 12.The new semester usually begins in September,the ninth month of a year.(2013,宁波) 13.The old man gave away eight hundred (百) books to the primary school in the countryside.(2013,兰州) 14.Next Sunday is Father''s Day and it is also my father''s fortieth (第四十) birthday.(2013,滨州) 15.It has been the tenth (第十) day since we climbed the Great Wall. 16.My grandma is in her eighties (八十多岁),but she can stil
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