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    高考復習:高中英語倍數表達法詳解
    編輯:admin 更新時間:2019-1-29 13:33:00 來源:中學英語網 【字號: 】 瀏覽:

    倍數表達法是歷屆高考的熱點。當我們要表達甲是乙的幾倍時,通常可使用以下句型:

    1. 倍數+as+形容詞或副詞的原級+as+其它。這種結構又常演變成下列兩類:
    ①倍數+as+many+可數名詞復數+as;
    ②倍數+as+much+不可數名詞+as。如:
    There are seven times as many people as I expected.是我預料的人數的七倍。
    There is five times as much coffee in this glass as in that one.這個杯子里的咖啡是那個杯子里的五倍。
    2. 倍數+形容詞(或副詞)的比較級+ than+其它。如:
    The hall is five times bigger than our classroom.這個大廳的面積比我們教師大五倍。
    3. 倍數+the size/height/length/width.etc.+of+其它。如:
    This road is six times the length of that one.這條路是那條路的六倍長。
    4. 計量名詞+of+名詞+be+倍數+that+of+其它。如:
    The size of the newly broadened square is four times that of the previous one.新擴建的廣場為以前的四倍大。
    5. 倍數+what從句。如:
    The production is now three times what it was ten years ago.現在的產量是十年前的三倍。
    6. 倍數+more+名詞+than+其它。如:
    There are nine times more books in his bag than in yours.
    他書包里的書比你書包里的書多九倍。
    7. 其它表達。如:
    She's twice/double my age.她的年齡是我的兩倍。
    The average income of the staff has been increased by 50 percent compared with last year.
    與去年相比,該單位職工的收入已增加了50%。
    He runs faster than me by three times.他跑得比我快三倍。
    {考查方向}
    1)倍數在句中的位置一般放在第一個as前面或比較級前面或名詞前面。
    2)用times表示倍數時,一般只限于表示包括基數在內的三倍或三倍以上的數。表示兩倍可以用twice或double,一倍用once.

    【重點歸納】

    除了我們初中所學的形容詞的比較級的用法,本模塊我們主要歸納幾種句式結構:

    (一)含倍數的比較句型

    1. 倍數+as+形容詞原級+as…。如:
    This bridge is three times as long as that one.
    His room is twice as big as mine;in other words,mine is only half as big as his.

    【特別提醒】

    “as…as”中間加入名詞的句式:
    ●倍數+as+形容詞+a/an+可數名詞單數+as…
    ●倍數+as+形容詞+可數名詞復數/不可數名詞+as…。如:
    Last year my brother twice as big a new house as mine.
    He has collected more than three times as many stamps as I (have).
    I spent twice as much time on my studies as you did.

    【難點點撥】

    該結構的省略:通常省略形容詞后面的名詞及比較的部分。如:
    I have to transfer(轉乘)buses so I spend twice as much (money as others)for the bus every day.
    2. 倍數+形容詞比較級+than…。如:
    This street is four times shorter than that one.
    Fear of danger is ten thousand times more terrifying than danger itself.

    【特別提醒】

    倍數+形容詞比較級+名詞+than…。如:
    He earns five times more money now than he did ten years ago.
    There are three times more books in our library than in yours.
    3. 倍數+the+名詞(如size,height,weight,length,width,depth等)+of…。如:
    This well is three times the depth of that one.
    4. 另外,請注意下面兩種說法:
    (1) 倍數+what從句。如:
    The length of the road is four times what it was three years ago.
    (2) 倍數+that of+被比較對象。如:
    Airmail charges almost twice or three times that of a normal mail.

    (二)其它句式

    1. "比較級+and+比較級"表示"越來越…"。如:
    Things are getting better and better every day.
    Our country is becoming more and more beautiful.
    2. "the+比較級…,the+比較級…"表示“越…,就越…”。如:
    The more you have, the more you want.
    The more a man knows, the less he knows he knows.

    【知識擴展】

    在形容詞比較級前可以加a little, a bit, a lot, no, any, much, far, even,still等副詞(組表示程度的加深。如:
    The result is much better than we expected.
    Actually, health is far more important than wealth.


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