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高中一年级英语

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  • 完形填空
    请认真阅读下列短文,并根据所读内容在文章后76~85表格中的空格里填入一个最恰当的单词。
    注意:每个空格只填1个单词。请将答案写在答题卡上相应题号的横线上。
    In the past, man did not have to think about the protection of his environment. There were not many people on earth, and natural resources seemed to be unlimited.
    Today, things are different. The world has become too crowded. We are using up our natural resources too quickly, and at the same time we are polluting our environment with dangerous chemicals. If we continue like this, human life on earth will not survive.
    Everyone realizes today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing methods, more and more fish are caught. We know that if too many trees are cut down, forests will disappear and nothing will grow on the land. Yet, we continue to use bigger and more powerful machines to cut down more and more trees.
    We realize that if rivers are polluted with waste products from factories, we will die in
    the end. However, in most countries waste products are still put into the sea, and there are few laws to stop this.
    We know, too, that if the population of the world continues to rise at the present rate, in a few years, there will not be enough food.
    What can we do to solve these problems?
    If we eat more vegetables and less meat, there will be more food available for everyone. Land that is used to grow crops can feed five times more people than land where animals are kept.
    The world population will not rise so quickly if people use modern methods of birth control.
    Finally, if we educate people to think about the problems, we shall have a better and cleaner planet in the future.
    Problems
    •More 小题1:_______ are caught. 
    •More小题2:_______ are cut down.
    •More 小题3:_____ products are put into rivers.
    •More小题4:_____ are born.
    Causes
    •The world is becoming too小题5:__________.
    •Modern methods make the world 小题6:________.
    小题7:
    •We human beings will not survive on the earth.
    Situation
    ● •Eat more小题8:_____ and less meat so that more food will be available. 
    ● •Use modern methods of小题9:_______ control so that the population will not grow too fast.
    •Educate people so that the earth will be better and 小题10:_____.

    本题信息:英语完形填空难度一般 来源:未知
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本试题 “请认真阅读下列短文,并根据所读内容在文章后76~85表格中的空格里填入一个最恰当的单词。注意:每个空格只填1个单词。请将答案写在答题卡上相应题号的横线上...” 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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