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高中三年级英语

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  • 完形填空
    阅读下面的短文,然后按照要求写一篇150词左右的英语短文。
    China bans free plastic bags
    CHINA began a crackdown on plastic bags, banning production of thin bags and forbidding supermarkets and shops from handing them out free, Tuesday, June 1, 2008.
    Chinese people use up to 3 billion plastic bags a day and the country has to refine 5 million tons of oil every year to make plastics used for packaging, according to a report on the Website of China Trade News, and fails to get rid of them properly, wasting valuable oil and littering the country, the State Council said in a notice posted on the Central Government’s Website.
    “Our country consumes huge amounts of plastic bags every year. While providing convenience to consumers, they have also caused serious pollution, waste of energy and resources, because of too much use and inadequate recycling,” it said.
    Worries about pollution are growing among ordinary citizens, as years of breakneck growth has a very bad effect on the country’s air and water, but the new ban may not be universally welcomed.
    1. 请用30个词概括短文的要点;
    然后用约120个词就“‘为了环保和节能,禁止商场免费提供塑料袋’的禁令与方便老百姓日常生活的矛盾”这一中心发表看法,并包括如下要点:
    a) 你对国家这一禁令的看法,并说明你的理由;
    b) 禁令实施后,消费者该怎么办?
    [写作要求]
    可以使用实例或分项论述的方法支持你的论点,也可以参照阅读材料的内容,但不得直接引用原文中的句子;
    概括准确,语言规范,内容合适,篇章连贯。

    本题信息:英语完形填空难度较难 来源:未知
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本试题 “阅读下面的短文,然后按照要求写一篇150词左右的英语短文。China bans free plastic bagsCHINA began a crackdown on plastic bags, banning production of t...” 主要考查您对

序数词

等考点的理解。关于这些考点您可以点击下面的选项卡查看详细档案。
  • 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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