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高中二年级英语

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     1 You can find it on buildings,sidewalks,street signs and trash cans from Tokyo to Paris,from Moscow to Cape Town.Street art has become a global culture and even art museums and galleries are collecting the works of street artists.
    Street art started out very secretly because it was illegal to paint on public and private property without permission.  2 Some think it is a crime and others think it is a very beautiful new form of culture.
    Art experts claim that the street art movement began in New York in the 1960s.Young adults painted words and other images on the walls and trains.This colorful style of writing became known as graffiti,whose art showed that young people wanted to rebel against society.
    Street artists do their work for different reasons.  3 They choose street art because it is closer to the people.Some artists try to express their political opinions in their work.Others like to do things that are forbidden and hope they won’t be caught.Advertising companies also use street art in their ads because it gives people the impressions of youth and energy.
     4 Artists can show their pictures to an audience all over the world.Many city residents,however,say that seeing a picture on the Internet is never as good as seeing it alive.
     5 There,it will continue to change and grow.
    A.Street art is a very popular form of art that is spreading quickly all over the world.
    B.Today,the Internet has a big influence on street art.
    C.With the development of science and technology,different art styles come into the Internet.
    D.The street art movement lives with the energy and life of a big city
    E.People often have different opinions about street art.
    F.Street art used to be illegal,but now has become popular.
    G.Some of them do not like artists who make so much money in galleries and museums.

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序数词

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  • 序数词

序数词的概念:

表示顺序的数称为序数词。如:first, second, third, fourth。


序数词的构成与用法

1、序数词的构成:
①一般来说,是由相应的基数词加词尾th构成。
   例:four+th→fourth
           six+th→sixth
           seven+th→seventh
           ten+th→tenth
②下面这些基数词在变为序数词时,有特殊的变化。
例:one→first
        two→second
        three→third
        five→fifth
        eight→eighth
        nine→ninth
        twelve→twelfth
③十位整数序数词的构成方法是将基数词的词y变成i,然后再加eth。
例:twenty→twentieth
        thirty→thirtieth
        forty→fortieth
        ninety→ninetieth
④两位或两位以上的基数词变成序数词时,仅将个位数变成序数词。
例:twenty-one→twenty-first
        thirty-five→thirty-fifth
        a hundred and fifty-three→a hundred and fifty-third

2、序数词的用法:
①序数词在使用时,一般加上定冠词。
例:the first book
        the second floor
        the third day
        the fourth week.
②序数词在多数情况下都用作定语,有的也可以作表语、主语和宾语。
例:The may1st is Labour Day. 五月一日是劳动节。
        My room is on the second floor. 我的房间在二楼。
        The first is larger than the secon.(主语)第一个比第二个大。
        Read the book from the first.(宾语)从开头读这本书。
        You'll be the sixth to write.(表语)你将是第六个写的。
③序数词的前面可以加上不定冠词,用来表示“再一”,“又一”的意思。
例:You may have a third try. 你可以第三次尝试。


序数词知识体系:

 


约数的表达方法

用tens/dozens/scores/hundreds/thousands/millions of 表示“几十、几百、上千、成千上万”等。
如:The boy bought dozens of pencils.            
        Thousands of people died in the earthquake.
注意: (A):dozen, score, hundred, thousand, million等表示确切数量时,不用复数。
如:five dozen (of) eggs   五打鸡蛋
        hree hundred people  三百个人

分数词的构成和用法:

1)分数词构成法:
分数词(FractionalNumerals)由基数词和序数词构成,基数词代表分子,序数词代表分母。除了分子为1的情况下,序数词都要用复数形式:
如:1/4:one-fourth
        5/9:five-ninths
        2/3:two-thirds
       17/5:three and two-fifths
       7/12:seven-twelfths
       379/8:forty-seven and three-eighths
此外还有下面表示法:
如:1/2:a(one) half
        1/4:a(one) quarter
        3/4:three-quarters
        9/4:two and a quarter
        3/2:one and half
        31/4:seven and three quarters


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