| The intelligent computer-assisted instruction based on network is a new type of instruction form. It comes out under the constructivism theory. It is the result of combining of the instruction reform and computer technology, and through the network and intelligent design. The thesis generally introduces the development and current situation of the computer-assisted instruction. It explains the constructivism theory and the teaching principle coming from it. Furthermore it analyses the constructivism theory and teaching principle. It also analyses the great effect of constructivism theory on designing the networked and intelligent CAI. It promotes the reform in education and instruction greatly. This thesis also describes the current situation of modern English teaching of our country. Development of computer network provides a lot of facilities and the wide development space for English teaching. As the development of the computer network technology and the constructivism theory, a new type of CAI produced, online teaching. Especially aimed for the developing education form ---Professorship education. According to the needs of reality, we set up an English study system – Online English study classroom. Finally, the thesis introduces the realizing procedure and solving methods of the English CAI network-teaching model based on constructivism theory in detail . The system uses the theory of constructivism theory and technology of ASP, etc. It includes the function of study on line, answer question on the net, online discussion and the virtual classroom. This system becomes the base of the complete and practical system of education on Web under the constructivism theory. |