英语中关于“such”倒装句句的用法

结果状语从句“so/such 。。。that（to do sth。） 。。。”中的so,such连同它所直接修饰的成分共同位于句首,主句要进行倒装,that后面的结果状语从句不倒装,表示强调。
eg:such a good boy is he that he is always ready to help =
so good a boy is he that he is always ready to help
eg:such a difficult question did I find it is that I can't work it out
(把 I find it is such a difficult question that。。。的谓词find倒装过来)
eg:so difficult did I find it to work out the question
(把 I find it so difficult to 。。。的谓词find倒装过来)