Usually, our teachers often give some evaluation on us according to the performance in their eyes.
通常，我们老师经常会根据在他们眼中我们的表现来做出一些评价。
Although it is one of the Chinese traditional education system, it is unfair in some extend.
虽然这是中国教育体系中的一个传统，但是在一定程度上是不公平的。
So, teacher evaluation becomes an important part in the education system, especially in the course evaluation.
所以，教师评价已成为教育体系的重要组成部分，特别是在课程评价上。

To have high quality courses, both teachers and students should take the responsibility.
展开高质量的课程，教师和学生都有责任。
So, if students can appraise the teaching quality for every teacher, it will be helpful for high quality classes.
所以，如果学生能够对每个教师的教学质量做出评价，这将有助于提高课程的质量。
As no one will be perfect, teachers can realize their disadvantages on teaching from teacher evaluation.
没有人是完美的，教师可以教师评价中了解到自己的缺点。
Thus, it is important and necessary.
所以说教师评价是重要和必要的。