题目

so that so as?
The teacher set so difficult an emperiment problem ---none of us worked out.
填as还是that?为什么?
答案是as..

提问时间：2020-11-10

答案

as
这是一道陷阱题,很容易误选that
The teacher set so difficult an emperiment problem (as)none of us worked out. 这道题里,as在句中引导的是一个定语从句,修饰先行词problem, 并在从句中作 work out的宾语.但it 作为代词要和在work out的中间.
The teacher set so difficult an emperiment problem (that)none of us worked (it) out.
如果从句中不缺宾语的话,就用that,与之前的so 组合成 so ...that...如此...以至于这样一个结构作结果状语.