Introductions establish context. In order words, introductions "identify the topic of the paper, locate the topic within the general literature on the subject, announce the thesis, and point toward the support offered and organization followed." (Fajans and Falk 2011).
State the Problem
Tell the audience why they should care about your paper
Clarify Relevant Issues:
What is the Relevant Law?
How does it fail to address the problem?
Why does it fail to address the problem?
Briefly explain the problem's important
Give a sample roadmap of paper/comment
"Part II sets out X. Part III analyzes X and concludes Y."
An author may craft the introduction how he or she sees fit. Traditionally, the author has creative freedom to introduce his or her paper as long as the format provides the necessary contextual information to the audience. Here are a few successful ways to provide an introduction.