4[2]Prince, E.F. & Bosk, C.. On hedging in physcianphysician discourse [A]. In Robert, J.D. Pietro (ed.) Linguistic and the profession. Vol. Viii [ C ]. New Jersey: Alex Publishing Corporation, 1980.83- 97.
5[1]引自 He Ji-sheng. On Hedges: A Contrastive Study of English and Chinese. Unpublished M.A. Thesis. Guangzhou Institute of Foreign Languages. 1992.