Throughout the play, Macbeth and Lady Macbeth change characters. This is evident through their speaking and their actions. Act One shows you the beginning of Lady Macbeth's killing rage. For example, she says on page 284 in lines 18-29 that Macbeth has the title of Glamis and Cawdor and now the only things that are keeping him from the throne are King Duncan and his two sons, Malcolm and Donalbain. In that soliloquy, she is already thinking of plotting to kill Duncan. The next soliloquy that she gives on page 285 in lines 38-53, she is calling on the...
In the end of the play, Macbeth is killed which shows that if you go about things by evil deeds, something bad will happen to you. In this case, Lady Macbeth and Macbeth are dead because they killed Duncan.

Macbeth and Lady Macbeth change characters in the play. They do this through their speaking and through their actions. Sometimes they use direct speech and sometimes they cover up what they actually want to do by using inference. They use their actions through authority to get what they want. This change in characters is very effective in a good play.