Last term our maths teacher set so difficult an examination problem ( )none of us work out.A that BLast term our maths teacher set so difficult an examination problem ( )none of us work out.A that B as C so that D which答案为什么是AS呢,怎么也不理解
问题描述：
Last term our maths teacher set so difficult an examination problem ( )none of us work out.A that B
Last term our maths teacher set so difficult an examination problem ( )none of us work out.
A that B as C so that D which
答案为什么是AS呢,怎么也不理解
答
用that，是so...that句型, none of us work out it , 文中无it
用as，是定语从句，so修饰先行词时， as做宾语，
problem as none of us work out 一个无人能解的问题
答
C 呗 so that 连接
答
你想选that吧?
选that的话,work out的后面要加一个it的
这里选as是引导定语从句的
答
不对，不能是as引导的定语从句。
as引导定语从句是
such ...as...
the same...as
这两个句式中，as 是关系词，前面的是定语。
这题出的有问题，题出的不对。