Sun Ok Park. 1998. Differences in Discourse Functions of Modal Auxiliaries and Quasi-Modals. Studies in Modern Grammar 13, 107-131. The main concern of this study is to provide the English learners with the differences in discourse functions of will and be going to and suggest the differences can be applied to other modal auxiliaries and quasi-modals. Will has hypothetical condition and the speaker reaches his or her subjective prediction using the background experience and common sense. Be going to has present indication for the future event, so the speaker reaches his or her prediction based on the actual condition. The modal auxiliaries, must and can also have the speaker`s subjectivity while the corresponding quasi-modals, have to and be able to don`t.

• 박선옥 | Sun Ok Park