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高中二年级英语

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    The right pair of exercise shoes can do a lot to prevent discomfort and injuries, personal trainers say.Here are some shopping tips:
      小题1:   Depending on your workout, shoes designed for walking, running, tennis, cross-training or another specialty will provide the best support for your feet.
    Shop when you normally exercise.Feet actually get bigger throughout the day, sometimes swelling up as much as a half-size by nighttime.   小题2:  
    Try them on.Never grab a pair of exercise shoes based only on the size of footwear you normally buy.Bring the type of socks you’d wear to work out and go for a walk through the store.
     小题3:   You should be able to spread your toes out comfortably.Make sure there’s about a half-inch of space between them and the front of the shoe.The back should fit snugly (warmly and comfortably) against your heel and not move up and down.If your feet are different sizes, buy based on the larger one.
    Talk to an expert.Shoe salesmen and personal trainers can study your stride (步伐) and the shape of your feet.  小题4:  
     小题5:   Many trainers recommend switching footwear every three to five months, if possible, to maintain(保持)proper cushioning and support.One tip: if you have to tie your shoes very tightly to feel a good amount of support, they may be ready to go.
    A.Think about how much you can afford to buy the workout shoes.
    B.Consider your type of exercise.
    C.Focus on fit.
    D.So don’t shop first thing in the morning if you often work out in the evening.
    E.Pay more attention to new style shoes
    F.Replace worn shoes regularly.
    G.Usually they can recommend the best shoes to guard against injuries.

    本题信息:英语阅读理解难度一般 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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