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高中三年级英语

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    Understanding the basic tips on growing grass will help you create a healthy and green lawn. If you plan the right variety at the right time and in the right place, you’ll achieve success.
    Autumn is the ideal growing season for the majority of grass varieties. Prepare the soil in this season as you do for any other plant. Based on the type of grass that you have chosen, the nutrient requirements may differ. For poor soil that is lack of essential plant nutrients, you can supply it with some organic fertilizer.
    To grow grass successfully, make sure you select the correct variety that will adapt to the soil conditions of your area and to the growing location. You can choose the American shade grass variety or native grass varieties.
    The sowing of grass can be done on bare soil or on an existing lawn. After sowing the grass seeds, cover them with a layer of top soil to quicken the germination (萌芽) process. In the first few weeks, you should irrigate the area every other day. Reduce the watering frequency after the grass has germinated. The addition of proper fertilizers at the right time is necessary for the healthy growth of grass. In the case of grass growing in shady environments, limit the use of fertilizers.
    Weed control is another important tip for growing grass. The presence of weeds in grass growing areas leads to competition for water and nutrients, thus resulting in the poor growth of the planted grass. Hence, in order to avoid this condition, ensure that you remove the weeds regularly.
    Lastly, one should also watch out for the presence of diseases and pests around the grass growing site in order to preserve the beauty of the lawn.
    Advice on How     小题1:   
    I. Rule of thumb
    ★plant the right variety at the right time and in the right place
    II.    小题2:  
    ★choose the soil in    小题3:  , which is the ideal grass growing season
    ★add organic fertilizer to poor soil lacking essential plant nutrients
    III. Grass variety
    ★select the correct variety   小题4:   the soil condition and growing location
    IV. Sowing
    ★sow grass seeds over soil and cover them with a layer of top soil to make the grass seeds   小题5:
    V.    小题6:   and Fertilization
    ★irrigate the area every other day and reduce the watering frequency after germination
      小题7:   proper fertilizers but limit the use of fertilizers in shady locations
    VI.    小题8:  
    ★remove weeds regularly to    小题9:   competition for water and nutrients
    VII. Disease control
      小题10:   to the presence of diseases and pests to preserve the beauty of the lawn

    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 “Understanding the basic tips on growing grass will help you create a healthy and green lawn. If you plan the right variety at the right time and in...” 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