Irony is the most widely used rhetoric in the novel Oliver Twist written by the English novelist Charles Dickens.In this thesis,the author mainly analyze how verbal irony is used to achieve the semantic deviation expecting to contribute to the undentanding of the great novel Irony is the most widely used rhetoric in the novel Oliver Twist written by the English novelist Charles Dickens.In the thesis, the author mainly analyze how verbal irony is used to achieve the semantic deviation expecting to contribute to the undentanding of the great novel