Move from the general to the specific.

What is the major issue being investigated? Why is the problem interesting?

What is the theoretical background for your study? That is, what has previous research about this topic shown, and what possible explanations can be found in the literature that might help you predict what the outcome will be? Make sure the articles you cite are relevant to the study at hand and that you explain explicitly how they are linked to your study.

What are the limitations of the previous work ?

What knowledge can be gained from the current work?

What is the major question ?

How will this knowledge be gained?

What are the specific hypotheses being tested?