【正确答案】正确答案：We may summarize conversational implicature as a type of implied meaning. It could be inferred only by the dependence on the context of the utterance and shared knowledge between the speaker and listener. Illocutionary force, on other hand, refers to speaker"s meaning, contextual meaning , or extra meaning, that is, the meaning the speaker wants to convey in a specific context. By an illocutionary force, we can say "What does he mean by saying that?" In this sense, implica-ture is comparable to illocutionary force in speech act theory in that they are both concerned with the contextual side of meaning, or "言外之意" in Chinese.