The achievements of the said work usually embody two sides: the validity of objectivity (social assessment) and the validity of subjectivity (subjective experience of the social assessment).

The analysis of valid claims and double structure of an utterance in Universal Pragmatics provides a new perspective and a basic analytic unit for this problem,it is insightful into understanding and choosing expressions in translation process.

This research aims to find out the key factors which influence the group effectiveness in dealing with complex pro.

Previous research showed that group effectiveness was influenced by many factors, including individual characteristics, organizational context, task property, and group process etc.