On the basis of observing and analyzing 37 professional teachers' classes from vocational colleges, some conclusion is drawn that the new education concepts that combining the work into study and student-centered teaching has become the mainstream ideology of the vocational education. And some problems still exist such as teachers have a better play in knowledge objective than competence objectives; there is some room to improve in teaching design and ability training. This paper goes on to

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... answers to the question of how to design expertise in a way that recognizes the context-sensitive nature of expertise, without neglecting professional subjects and their developing skills and knowledge.