How does the author use juxtaposition in the novel, Three Junes?

Within the chapters of each part, the past and present are told in juxtaposition, alternating between one and the other. As a result, the language of the sections of the chapters occurring in the past are written in past-tense, and take on a reflective tone since they deal with issues in the past, while reflections on the past made in the present time sections of chapters also take on a reflective tone given present circumstances – such as Fern’s pregnancy and Paul’s death – lead to characters reflecting on a past as a way to understand the present.