Hamlet appears to act mad when he hears of his father's murder. At the time he speaks "wild and whirling words." [Act I, Scene v, lines 127-134 Hamlet's behaviour throughout the play, especially towards Ophelia is very erratic. He professes to be the only one who truly loves her, during the fight with Laertes in Ophelia's grave, but he tells her that he never loved her, when she returns his letters and gifts.
His mood changes abruptly throughout the play.
He jumps aboard a pirate ship without anyone to back him up.
He jumps into Ophelia's grave, and fights with Laertes in her grave.
He has Rosencrantz and Guildenstern killed, even though they were not part of his revenge-against-his-father's-murder plan.
He alone sees his father's ghost in his mother's chamber. Every other time the ghost appeared someone else has seen it. During this scene he finally shows his madness, because his mother does not see the ghost.
[Act III, scene iv, ~ line 105] He has violent outbursts towards his mother.
Hamlet tells Laertes that he killed Polonius in a "fit of madness". [Act V, Scene ii, lines 236-250] He kills Polonius and will not tell anyone where the body is.
Hamlet appears to act mad when he hears of his father's murder. At the time he speaks "wild and whirling words." [Act I, Scene v, lines 127-134 Hamlet's behaviour throughout the play, especially towards Ophelia is very erratic. He professes to be the only one who truly loves her, during the fight with Laertes in Ophelia's grave, but he tells her that he never loved her, when she returns his letters and gifts.
Hamlet appears to act mad when he hears of his father's murder. At the time he speaks "wild and whirling words." [Act I, Scene v, lines 127-134 Hamlet's behaviour throughout the play, especially towards Ophelia is very erratic. He professes to be the only one who truly loves her, during the fight with Laertes in Ophelia's grave, but he tells her that he never loved her, when she returns his letters and gifts.
Hamlet appears to act mad when he hears of his father's murder. At the time he speaks "wild and whirling words." [Act I, Scene v, lines 127-134 Hamlet's behaviour throughout the play, especially towards Ophelia is very erratic. He professes to be the only one who truly loves her, during the fight with Laertes in Ophelia's grave, but he tells her that he never loved her, when she returns his letters and gifts.
Hamlet appears to act mad when he hears of his father's murder. At the time he speaks "wild and whirling words." [Act I, Scene v, lines 127-134 Hamlet's behaviour throughout the play, especially towards Ophelia is very erratic. He professes to be the only one who truly loves her, during the fight with Laertes in Ophelia's grave, but he tells her that he never loved her, when she returns his letters and gifts.