Research the history of phonetics and speech as a subject of study; does Shaw's depiction of the scientific interests of his character Higgins seem to have been well-grounded in historical precedent?
Compare and contrast the ways in which both Liza and her father are thrust into the middle class (she through learning to speak ''properly,'' he through obtaining money), and why each is not comfortable in it. Through these characters, what does Shaw seem to be saying about class distinctions?
Contrast Colonel Pickering and Henry Higgins in terms of manners and behavior. What are the implications of their very different treatments of Liza?
Research the social position of women in early twentieth-century Britain (economic opportunities, cultural conventions, legal rights), and use this information to explain further why Liza is so concerned about her future following the conclusion of Higgins's "experiment."