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高中二年级英语

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  • 完形填空
    Directions: Read the following passage and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need.
    A. Illegal hunting has caused a decrease in the number of sea turtles.
    B. Most turtles are eaten by Mexicans and Mexican Americans.
    C. A campaign to protect sea turtles.
    D. Many people kill and eat turtles in a religious observance.
    E. Government should prevent sea turtle being hunted to increase the number of the species.
    F. A letter was written to Pope to save endangered sea turtles.
    小题1: ___________
    Environmental groups in the United States are leading a campaign to save thousands of endangered sea turtles. They have asked Pope John Paul the Second to ban turtle meat during the Christian religious observance known as Lent. Christians observe Lent in preparation for the holiday of Easter.
    小题2: ___________
    Environmental groups say illegal turtle hunting is one of the major threats to endangered sea turtles in southern California and Mexico. It has been illegal to harvest and eat sea turtle meat in Mexico for more than ten years. However, demand for sea turtle meat is widespread in both Southern California and Mexico. Biologists believe that illegal hunting is one of the main reasons for the sharp drop in sea turtle populations during the past thirty years.
    小题3: ___________
    The week before Easter Sunday is an especially deadly time for the turtles. As many as 5,000 turtles are killed during this time each year. Many Mexicans and Mexican Americans eat turtle meat during the days before Easter. Many people do not eat meat during this holy time in order to obey the rules of Lent. Because sea turtles swim, many people consider them to be fish. Fish is permitted during Lent.
    小题4: ___________
    The Sea Turtle Conservation Network is a union of fishermen, environmental activists and researchers. They sent a letter to Pope John Paul, urging the Roman Catholic Church leader to officially declare that sea turtle flesh is meat, not fish or seafood. They say thousands of these endangered animals would be saved if people did not eat them during this religious period. The letter also asked members of the Catholic Church to obey laws banning the capture of turtles in Mexico and the United States.
    小题5:___________
    About 35,000 endangered sea turtles are killed illegally near the coasts of Baja, California each year. Studies have shown a sharp drop in the numbers of females. They travel from as far away as Japan to lay their eggs on local beaches. Environmental activists say hunting sea turtles for their meat is the main barrier to the recovery of the species. They have urged the governments of the United States and Mexico to improve enforcement of the ban on sea turtle harvesting.

    本题信息:英语完形填空难度一般 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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