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高中三年级英语

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  • 阅读理解
    根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
    In times of economic downturn, many people start to look for ways to reduce their household budget and save extra cash. Living a thrifty (节俭的) lifestyle does not have to mean doing nothing.   小题1:   Here are some tips.
    Track your spending for at least 2 weeks. You won’t really know how to live a thriftier lifestyle until you know where your money is going. Write down every time you spend money and take a look at it at the end of the month.  小题2:
    Search the Internet when you have to buy something. Because of the easy access to information, you can compare prices from more stores in less time.
     小题3: Combining producers’ coupons (优惠券) with store discounts can lead to major savings.
    Turn off the lights and other electronics in your home when you are not using them. 小题4:   Leaving electronics on can use a tremendous amount of extra energy, costing you money.
      小题5:  When you do have to go out, look for available deals and discounts. If you are a frequent restaurant diner, consider purchasing a guide book for local restaurants, which will help you save money.
    A.Eat at home as often as possible.
    B.You probably don’t really need 500 channels.
    C.If you really can’t live without it, call the company.
    D.Open a window and let in the natural light instead.
    E. In this way, you will see obvious ways to reduce the small daily expenses.
    F. So check your local stores as well as online providers to find the best price.
    G. Instead, making small changes will allow you to save money and still enjoy yourself.

    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 “根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。In times of economic downturn, many people start to look for ways...” 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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