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With the development of ICT technologies, such as ubiquitous computing, and semantic Web etc., group-oriented large-scale cooperation environment used for special domains is needed. In e-learning, the environment can be used as infrastructure for large-scale collaborative e-learning facility. In this infrastructure, awareness service is the key. The paper focuses on the research of innovative awareness service for this environment. According to the characteristics of groups in large scale environment and intrinsic requirements of cooperation, an awareness language is proposed, which is called group-oriented cooperative awareness language. The language is a declarative language, which is described in detail in the paper. The runtime for this awareness service is developing.