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Now the air in our city is _______ than it used to be. Something must be done to stop it.

A.very good B.much better

C.rather bad D.even worse

D

【解析】

试题分析:句意:现在我们城市的空气比以前要糟过了,必须采取措施来阻止它。根据than得知要用比较级;排除A和C选项;B 好很多;D 坏很多。结合语境选D。

考点: 考查比较级。

考点分析: 考点1:副词 副词用法
一、副词在句中的作用: 副词修饰动词, 形容词, 名词, 副词或全句, 在句中的作用如下
        1.作状语:
        You should always review your lessons.
        He works hard. 他工作努力。
        2.作表语: The class is over.
         3.作定语: 副词作定语时置于被修饰词之后
        The comrades here give us a lot of help.
        4.作补语(包括宾语补足语和主语补足语):
          I found all the lights on when I got home last night.
 二、副 词 的 比 较 等 级:
   副词和形容词一样,也有它的比较级和最高级形式,并且变化规则也是一样的。
        单音节副词的比较级是在副词后面加上 -er 构成的,最高级是在副词后面加上 -est 构成的。例如:near nearer nearest
         多音节副词(多以 -ly 结尾)的比较级是在副词的前面加上 -more 构成的。 最高级是在副词前面加上 -most 构成的.例如;warmly   more warmly   most warmly
        有些副词的比较级和最高级形式是不规则的:
  well-better - best       little - less - least
  much- more - most         badly - worse - worst
  far-farther(further)-farthest(furthest)
        副词的比较级和最高级用法同形容词的比较级用法基本一样,两者比较用比较级,三者或以上用最高级,但是副词最高级形式句中 the 可以省略。例如:
        Lucy gets up earlier than Lili. 露西比丽丽起床早。
        He runs fastest in our class. 他在我们班跑地最快。
        当然,形容词比较等级的各个特殊用法,也同样适用于副词。比如“the + 比较级……,the + 比较级……”,表示“越……,越……”:He was too tired that he ran more and more slowly.他太累了以至于跑的越来越慢。
常见考法
        对于副词的考查,多以单选或词语运用的形式考查学生在具体语境中灵活运用副词的能力,尤其是在各种比较句型中灵活运用副词。例如:
He walked       (quiet) into the classroom.
解析:本题考查学生是否能熟练分辨形容词和副词的用法。“轻轻地走进”,副词修饰动词,所以quiet变为副词quietly,.我们要牢记“动+副”这种结构。
答案:quietly
误区提醒
        象friendly , lovely 虽然以 ly 结尾,但实则是形容词,She is friendly to me (她对我很友好。)可千万不要误认为是副词哟!. 另外,early的比较等级为规则变化, early -earlier -earliest,要记住啊!
        例题:My mother often gets up        (早)than me.
        解析:很明显是两人对比,所以应用比较级,early 的比较等级为规则变化,early -earlier 。
        答案:earlier
 
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