英语问题--定语丛句That was so diffcult a maths problem____none of us could work out.

英语问题--定语丛句That was so diffcult a maths problem____none of us could work out.
英语问题--定语丛句
That was so diffcult a maths problem____none of us could work out.

英语问题--定语丛句That was so diffcult a maths problem____none of us could work out.
应该填写that
首先你判断错误了...这不是一句定语从句
它是so...that...引导的让步状语从句
这个问题太难了以至没有人能够解答出来...
也可以说This is too difficult a mqths problem for us to work out.
如果是定语从句...被修饰词一定在从句中充当一定的成分...
显然problem 不作成分...不难判断是状语从句
建议：这一部分知识一开始有些搞,经常练习和辨析就能熟能生巧