Verbal communication is a complex interactive reasoning process, the hearer constructs a dynamic context on the basis of the speaker’s ostensive behaviors, and as the context varies, the two sides have to adjust and select the communication content and communication strategies constantly to achieve their purpose. In the film of《Catch Me if You Can》, the actor Frank picked up a lot of information from his dialogue with the speaker’s careless words, and formed many new plans in his heart, while adapting to the participants’ present context, he actively created new context and achieved unexpected effect, thus the audience left a deep impression on his alertness and intelligence; the implication of unrelated words between Frank and Carl also let the audience feel indebted as if it were received in person.