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高中三年级英语

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    Hospital emergency rooms treat injured fingers all the time. Without treatment, a bad cut can lead to permanent damage. But how should a person know when a bleeding cut is serious enough to require medical attention?
    Here are some tips from Dr. Martin Brown, chairman of the department of emergency at Inova Alexandria Hospital in Virginia.
    1. Laceration (裂口)
    The medical term for a cut or tear in the skin is a laceration.   小题1:  A long cut on a finger can likely be treated without a visit to a doctor if the wound is not very deep. However, if you have a short but deep laceration, you will need professional attention.
    2. Fingertips cut off
    Some injuries, like a fingertip that gets cut off, might even need surgery to repair.   小题2: More often, cutting down the bone is what is done because reattaching a fingertip is often not successful.
    3. Bleeding
     小题3:  Small cuts usually produce what is known as venous (静脉的) bleeding. This means the blood flows steadily from the injury. The bleeding will often stop when pressure is put on the wound. In most cases holding direct pressure with a clean cloth for four to five minutes would do. But if a cut appears to be pumping blood out with some force, this may be a sign of arterial (动脉的) bleeding.   小题4: 
    Finally, always keep this in mind: even a cut that does not require medical attention must be kept clean to prevent infection. Small cuts should be cleaned gently with clean water.   小题5: Then cover it with a clean, dry bandage.
    A.How a wound bleeds can be a sign of how serious it is.
    B.That requires a specialist to either cut down the bone or reattach the fingertip.
    C.This kind of injury should be treated by a medical professional as soon as possible.
    D.The first signs of this disease include difficulty opening the mouth.
    E. Use a washcloth to clean the area if the wound is dirty.
    F. With a cut finger, holding the hand above the heart can reduce the loss of blood.
    G. The length is usually not as important as the depth.

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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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