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高中三年级英语

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    阅读下面的短文,并根据短文后的要求答题。(请注意问题后的词数要求)
    [1]Every year, lots of children die in traffic accidents, and many of these tragedies occur because child safety seats are not properly installed or are not used at all. As more and more families buy private cars, it’s time to _______________ the safety of children.
    [2]Parents tend to let the child sit alone in the front passenger seat, or leave the child alone in the back of the car without any safety restraints, have the child held in an adult’s lap, or have the child use an adult’s safety belt. All of these can potentially add elements of danger for a child in a car.
    [3]In the 1970s, Western countries began to research safety devices for children in cars. It was later found that special safety devices for children in cars will help to reduce injury by about 70 percent, and child safety seats play a key role in protecting children in case of traffic accidents.
    [4]Since 1999, automakers have been required to put child restraint systems in cars in the United States. There are more than 25 million child safety seats in the United States, compared to only 600,000 in China. Today, more than 40 countries in the world have already issued relevant legal regulations, making it compulsory that children sit in safety seats. In Germany, the Netherlands and Japan, children under 12 years old are required to sit in child safety seats.
    [5]China is a manufacturing base for child safety seats, but the market in China is still limited. As a result, while we export our products to other countries, our own children in China are rarely provided with safety seats for various reasons. We hope this situation will be improved.
    小题1:What’s the main idea of Paragraph 2?(no more than 10 words)
                                                                                   
    小题2:Fill in the blank in Paragraph 1 with proper words. (no more than 5 words)
                                                                                   
    小题3:Explain the underlined sentence in Paragraph 5?
                                                                                   
    小题4:List at least 3 elements of danger for a child in a car.
    1)                                                                           
    2)                                                                           
    3)                                                                           
    小题5:What does the author want to tell us by writing such an article? (no more than 12 words )
                                                                                  

    本题信息:英语完形填空难度一般 来源:未知
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本试题 “阅读下面的短文,并根据短文后的要求答题。(请注意问题后的词数要求)[1]Every year, lots of children die in traffic accidents, and many of these trage...” 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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