每门学科都有自己的理论,历史学也不例外。可以说,每门学科的理论都是该学科知识中最难弄懂的,但如果大家都因此而回避理论问题,这个学科就无法发展。非常佩服本书的作者有勇气编写这本选修课程教材,因为对中学历史教师来说,要掌握相关的理论知识,真不是一件容易的事情。一般而言,这比掌握某个方面的历史知识要困难得多。 Each discipline has its own theory, history is no exception. It can be said that the theory of each subject is the hardest to understand in the subject knowledge, but if all of us thus avoid theoretical problems, the subject can not develop. Those who admire this book have the courage to write this elective course material because it is not an easy task for secondary school history teachers to master relevant theoretical knowledge. In general, it is more difficult to grasp the historical knowledge of one aspect.