You may borrow this book______you keep it clean.

题目

You may borrow this book______you keep it clean.
A as long as B so far as C in case D even if
选择哪个选项,然后解释as long as 与 as far as 的区别
因为as long as 与 so far as 都有只要的意思，所以有点混乱。

答案

选A as long as 表示 只要 的意思.只要你能把书保持的干干净净,你就可以借走这本书.当然as long as 字面意思是长达.比如,the great wall is as long as 10000km.长城长达一万米.而as far as 字面意思是远达.,比如Beijing is as far as 1200000m from my homtown.另一层含义是据.常常构成as far as i know 据我所知 .
当然了因为两者是as..as...结构,所以本身意思还有和,一样远或者长的意思哦.
in case 以免...
even if 即使
我解释的还不够好吗?楼主?