whether与if 的用法总结
no less ~~than
none more than
not more than
no more than
那几个短语的意思
谢谢牛哥牛姐了！
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perhaps useful for you. I don't know how to attach it here. It gave a brief view of those questions as below enclosed:
For your reference only...................
(三)the more...the more结构
表示"越...越...".前者为状语从句,后者为主句.比较级的位置一般在句首,这种类型很容易辨别,看到两个中的一个另一个的位置和形式也就固定了,值得指出的是,该结构大多为系表结构,其中系动词经常省略.
(四)同级之间的比较
在比较两个人(事物,程度等)在某方面相同,用as...as在不相同用not so/as...as.如比较中有a/an要注意语序as+adj+a/an+n+as 如She is as good an actress as her sister.
(五)比较前后的时态不一致
两个比较对象的动作是相同的,但其发生的时间却不一致,比如一个发生在过去一个发生在现在.在这样的情况下,than之后的替代助动词就要与前面动作所表示的时态不一致.若前面是过去时,但比较后时间状语暗示了将来的动作,那么此时补出的谓语动词就是与将来时相对应的助动词will而不是did,如果是过去完成时,就补出had即可
(六)A至少等于甚至还超过B的表达方式
主要有以下三种表达方式:
1)at least as great as sth.
2)as great as sth... ,if not more so
3)as great as or greater than sth(great代形容词原级 greater代形容词比较级)
(七)倍数增减的表达
1)倍数(数量词)+形容词/副词比较级+than
Force N1 is 4 times greater(less) than Force N2.(n1比n2大四倍,n1是n2的四分之一)
His father's age is 25 years greater than his.
2).倍数+as+形容词/副词+as(或把倍数放在最后一个as之后)
Betty's books are five times as many as Mary's.
3) 倍数+名词
The earth is 49 times the size of the moon.
4)动词+百分数或倍数
The personal income last year rose 1.1%.
5)动词+to+数词
Last month the profit of that company rose to $2 million.
6)动词+by+数词或百分比或倍数
Expenditure on the constructing project will be reduced by 10%.
7)double/triple/quadruple+名词在这里这三个词都是动词
They plan to double their production.
(八)比较中的一些惯用省略形式以及部分成分的省略
在比较中,有一些习语被使用的多了,就成了一些习惯用语被保留了下来.如:than ever(before), as soon as possible(convenient), than usual/necessary, than estimated/thought/anticipated等等,之所以提出这些结构就是要告诉大家只要看到这些表达就认定他们是对的而无须去对照前面的原则.
(九)其他类似的比较形式
除了以上比较形式以外,还有一类词如: compared with, below, above, superior to 等也同样具有比较的含义.对于题干中含有此类词的解题思路同上,即:比较物形式应该对称,需要具有可比性...................
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