求翻译：教授可以与在教室之外的学生建立社会关系，但是在教室里他们起一位教师作用。一位教授有一天但是第二天可能与学生喝咖啡他可能期望他们见到一篇文章的期限或者为一个讨论或者一次考试作准备。教授可能给额外的注意，除班级外，对一个需要帮助的学生，但是在涉及评价学术工作时，或许将不不同处理他或者她。教授关于学生有几个角色；他们可能是顾问和朋友以及老师。学生必须意识到当一个老师的角色改变时，他们应该照着改变他们的行为和态度。是什么意思？

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In addition, professor in the classroom with students can build social relationships in the classroom, but they play a teacher role. One professor one day but the first 2 days with the students may be having a cup of coffee he might expect them to see an article or a discussion or a meeting to prepa

Professor may with establish the social relations outside the classroom student, but a their teacher affects in the classroom.But a professor one day second days possible and the student drinks the coffee he possibly to expect they saw an article the deadline or is a discussion or one time tests the

Professors and students establish social relationships outside of the classroom, but in their role as a teacher in the classroom. A Professor one day but may be related to the student for coffee the next day he might expect them to see an article or as a discussion or a test for a period of preparat