根据历年高考英语改错题，得出如下规律：多词、少词、错词、其中有一个是正确的。作者通过以上四点进行归纳总结。主要从语法角度和历年高考改错题的特点出发归纳四个系列。以及两个专题和改错技巧。同时配有练习题。

定语从句改错
一、误用关系词
I will never forget the days when we spent together on the farm.
This is the factory where he was invited to visit last month.
He save a son which I have ever help in our school.
The news which we never forgot to be invited to the party is a lie