James R. Martin, with this challenge in mind, developed SFL and set up the APPRAISAL Systems (AS) in the early nineties of the 20th century.

• James Martin在20世纪90年代初注意到了这一盲点,在SFL的基础上提出了评价系统(APPRAISAL Systems)的理论,进一步发展了系统功能语言学。