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高中三年级英语

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    Directions: Read the following passage. Answer the questions according to the information given in the passage and the required words limit. Write your answers on your answer sheet.
    Software developed by an Israeli company could help concerned parents protect their children from possible dangers online.
    The software from United Parents, which can be downloaded for free onto the child’s computer, sends parents a warning by email or text message when doubtful relationships or activities are discovered.
    A computer analyzes(分析) children’s interactions on Facebook and within 10 days the service will also be able to follow interactions over MSN Messenger. “Parents probably know about one or two email accounts or nicknames the child uses but often there are other accounts they don’t know about,” co-founder and Chief Executive Officer Hanan Lavy said. “We give the parents the information and they choose what to do with it.” When doubtful interactions are discovered, a warning will direct parents to United Parents’ website where they can get more information and advice about what to do next. Lavy said the service protects children’s privacy more than other products that save chat content and screen captures and require parents to look through masses of information. United Parents does not share with parents private content and dialogues, only the analysis done by a computer.
    A Consumer Reports survey released in May found that millions of children use Facebook without supervision, exposing themselves to serious threats from potential dangers online. Lavy, who was head of research and development at Mercury, started United Parents after he saw the risky online behavior of a relative. “I thought the methods available were so unhelpful. I wanted the option of building a community where parents can help other parents,” he said.
    Though many of the products available are from small players such as United Parents, large companies such as Intel Corp’s McAfee are entering the market.
    小题1:How does the software make parents aware of their children’s doubtful relationships or activities? (No more than 9 words) (2 marks)
    ____________________________________________________________________________
    小题2:Why do you think some children don’t want their parents to know about all their accounts or nicknames? (No more than 10 words) (3 marks)
    ____________________________________________________________________________
    小题3: What is the purpose of Lavy’s starting United Parents? (No more than 10 words) (2 marks)
    ____________________________________________________________________________
    小题4:What is the main idea of the passage? (No more than 12 words) (3 marks)
    ____________________________________________________________________________

    本题信息:英语完形填空难度一般 来源:未知
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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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