The English youngster noticed that pollution levels are around two-thirds higher close to the ground than they are in the air at the height where they are recorded by the agency. (2020北京卷;阅读理解Text B·人与自然)
这位英国少年注意到,地面附近的污染程度比该机构所记录高度的空气中的污染程度高出大约三分之二。
结构解码
难点突破
本句中用到了分数的比较表达two-thirds higher than...“比……高了三分之二”,其中two-thirds就指“三分之二”,如果要表达“比……高了二分之一”,则是one half higher than...。注意本句中close to the ground 修饰的是pollution levels。
语法链接 常用的倍数表达结构
在表达“比……大/小/高/长几倍”时,常用的结构为“倍数+形容词比较级+than+比较对象”。具体运用时,可以先用“形容词比较级+than”来表达“比……大/小”等,然后再在比较级前面加上相应的倍数,比如:
This room is larger than that one.这个房间比那个房间大。
This room is twice larger than that one.这个房间比那个房间大两倍。(这个房间是那个房间的三倍大)
其他倍数表达结构还有:
倍数+as ... as ...
倍数+the size/number/amount of ...
倍数+what从句
核心词
youngster n. [C]年轻人
pollution n. [U]污染
height n. 高度
agency n. [C]机构