What are the main features of Bernard Shaw’s plays with regard to the theme, characterization and plot?

What are the main features of Bernard Shaw’s plays with regard to the theme, characterization and plot?

A.Structurally and thematically. Shay followed the great tradition of realism. As a realistic dramatist, he took the modem social issues as his subjects with the aim of directing social reforms.
B.One feature of Shaw's characterization is that he makes the trick of showing up one character vividly at the expense of another. Another feature is that Shaw's characters are the representatives of ideas ints of view that shift and alter during the plsy.
C.Shaw' plays hare plots, but they do not work by plots.