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  • 阅读理解
    下面文章中5处（第81-85题）需要添加小标题。请从以下选项（A、B、C、D、E和F）中选出符合各段意思的小标题。选项中有一项是多余选项。
    A. Education yourself in a long-term way.
    B. Save up for retirement.
    C. Work towards a goal.
    D. Spend money carefully to get long pleasure.
    E. Wise investment can make your life different.
    F. Develop lasting personal relationship.
    1.______
    We all want to buy a new piece of electronic product, spend an expensive night in town, or take a loan for the good-looking care we can’t afford in order to make ourselves happy. You might feel great when you get those things, but later rash(轻率的) spending will hurt you a lot. Because expensive things don’t create lasting happiness and security. Careful spending will bring you great enjoyment in the future.
    2._______
    Wise investing is also something everyone can work on to live happily. It even can make a big difference when they retire between their 40’s and their 60’s. For example, if a person in his early 20’s invests 20% of his income in a fund(基金), the interest he earns will equal his current salary when he reaches his early 40’s. He could retire without a drop in income!
    3._______
    To be happy, we need continuous growth. The best way to grow is life-long education. This doesn’t mean you need to spend 2 hours reading every day. What you need is just to keep an open mind and search for fresh ideas. Education builds over time. You might think that the bits of wisdom you acquire every day don’t mean much, but over the years they will add up to make you a wiser person.
    4. ________
    The personal relationships we develop with friends and family members are the greatest source of happiness in our lives. Don’t forget them. Taking some time to build and enjoy personal relationships is essential to long-term happiness. No matter how successful you are, you’ll probably be miserable without the people you care about.
    5.________
    If you always feel unhappy and think your life is terrible, try to set a goal which interests you a lot. We can’t control everything in our lives, but working towards a goal gives us something positive to focus on and lays the foundation for the future success.

    本题信息：英语阅读理解难度一般 来源:未知
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本试题 “下面文章中5处（第81-85题）需要添加小标题。请从以下选项（A、B、C、D、E和F）中选出符合各段意思的小标题。选项中有一项是多余选项。A. Education yourself...” 主要考查您对

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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