Abstract: Language is not only a tool to convey objective propositions,but also a tool used by utterers to convey subjectivity.Firstly,the utterer's awareness of the proposition,the attitude towards the event,and the position on discourse form a subjective statement.Moreover,when the subjectivity of the utterer endows certain parts of the utterance and gain prominent perception,it takes the form of emphasis in the utterance.Secondly,from the perspectives of semantics,syntax and pragmatics,we can explore the essence of subjectivity and emphasis expression in the utterance.Finally,one-way emphasis implies subjectivity,and emphasis is a form of subjectivity,while subjectivity in connection with the concept of advantage and freedom in language does not always express the emphasis.