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高中二年级英语

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    Each summer, you hear news about a sports player being rushed to the hospital or passing out because the heat was just too much. If you follow some basic safety tips, you’ll be safe and happy playing outside for years to come.
    Drinking water is crucial to your health in the heat. This is the first thing that everyone says when it is hot outside. You should not drink soda, coffee, or iced tea when you’re playing outside, and for a few hours after you get inside too.
    Be sure to take enough breaks to let your body rest. If you feel that your coach don’t let you take enough breaks in the heat, don’t wait until you feel awful to march to the sidelines. Once you feel bad, it’s usually too late. Just be honest with your coach when you need breaks. He’ll understand.
    When you do have a break, don’t sit in the sun. With the sun beating down on you, you’ll only heat up and sweat more. Try to grab a seat in the shade under a tree, or even better, go indoors for a little while. Cooling yourself down can help you stay active longer.
    The signs of dehydration(脱水)can be tough to recognize. They include a dry or sticky mouth, dry skin, a headache, and dizziness(头晕). You might not always feel thirsty, so watch out for the signs of dehydration, and get yourself into the shade and get some water before it gets worse.
    The earlier in the day you start your workout or practice, the cooler it will be. If you can start practice before the sun comes up, you have a few good hours to practice in the cool hours of the morning. Also, the earlier you practice, the earlier you can be done, which gives you some good recovery time when the heat gets bad in the afternoon. If you need more practice time, a good idea is to take a break when the heat is bad and come back to the field later in the evening, when the sun is setting.
    As long as you pay attention to the above, playing sports safely in the heat isn’t a difficult thing.
    Title: Some safety tips while playing sports in the heat
    Drinking water in time
    ●Drinking water is crucial and necessary when you play outside.
    ●Some drinks are not   小题1:for your body when you’re playing outside and for a few hours after you get inside.
    Taking enough breaks
    ●Breaks can小题2:your body.
    ●Take a rest before it is too late.
    ●Take a break in the shade or go  小题3: to cool yourself down.
    小题4:dehydration
     小题5: of dehydration: a dry or sticky mouth, dry skin, a headache and dizziness.
    ●Get into the 小题6: and get some water before it gets worse.
    Choosing 小题7:hours for your practice
    ●Practice before   小题8:, so you can小题9:better in the afternoon.
    ●Do extra exercise in the evening with the sun   小题10:.

    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 “Each summer, you hear news about a sports player being rushed to the hospital or passing out because the heat was just too much. If you follow some...” 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