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高中英语倍数表达法详解

http://www.newdu.com 2024/11/29 02:11:42 普惠英才 佚名 参加讨论


    1. 倍数+as+形容词或副词的原级+as+其它。
    这种结构又常演变成下列两类：
    ①倍数+as+many+可数名词复数+as;
    ②倍数+as+much+不可数名词+as。如：
    There are seven times as many people as I expected.
    是我预料的人数的七倍。
    There is five times as much coffee in this glass as in that one.
    这个杯子里的咖啡是那个杯子里的五倍。
    2. 倍数+形容词（或副词）的比较级+ than+其它。如：
    The hall is five times bigger than our classroom.
    这个大厅的面积比我们教师大五倍。
    3. 计量名词+of+名词+be+倍数+that+of+其它。如：
    The size of the newly broadened square is four times that of the previous one.
    新扩建的广场为以前的四倍大。
    4. 倍数+what从句。如：
    The production is now three times what it was ten years ago.
    现在的产量是十年前的三倍。
    5. 倍数+more+名词+than+其它。如：
    There are nine times more books in his bag than in yours.
    他书包里的书比你书包里的书多九倍。
    6. 其它表达。如：
    She's twice/double my age.
    她的年龄是我的两倍。
    The average income of the staff has been increased by 50 percent compared with last year.
    与去年相比，该单位职工的收入已增加了50%。
    He runs faster than me by three times.
    他跑得比我快三倍。
    【考查方向】
    1）倍数在句中的位置一般放在第一个as前面或比较级前面或名词前面。
    2）用times表示倍数时，一般只限于表示包括基数在内的三倍或三倍以上的数。表示两倍可以用twice或double,一倍用once.
    【重点归纳】
    除了我们初中所学的形容词的比较级的用法，本模块我们主要归纳几种句式结
    （一）含倍数的比较句型
    1. 倍数+as+形容词原级+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.
    【特别提醒】
    “as…as”中间加入名词的句式：
    ●倍数+as+形容词+a/an+可数名词单数+as…
    ●倍数+as+形容词+可数名词复数/不可数名词+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.
    【难点点拨】
    该结构的省略：通常省略形容词后面的名词及比较的部分。如：
    I have to transfer(转乘）buses so I spend twice as much (money as others)for the bus every day.
    2. 倍数+形容词比较级+than…。如：
    This street is four times shorter than that one.
    Fear of danger is ten thousand times more terrifying than danger itself.
    【特别提醒】
    倍数+形容词比较级+名词+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. 另外，请注意下面两种说法：
    (1) 倍数+what从句。如：
    The length of the road is four times what it was three years ago.
    (2) 倍数+that of+被比较对象。如：
    Airmail charges almost twice or three times that of a normal mail.
    （二）其它句式
    1. "比较级+and+比较级"表示"越来越…"。如：
    Things are getting better and better every day.
    Our country is becoming more and more beautiful.
    2. "the+比较级…，the+比较级…"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.
    【知识扩展】
    在形容词比较级前可以加a little, a bit, a lot, no, any, much, far, even,still等副词组表示程度的加深。如：
    The result is much better than we expected.
    Actually, health is far more important than wealth.
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