求写篇英语作文：the turth about college teachers

the turth about college teachers以下内容，可以参考：）~~
There are different type of teachers .
I have divided them into 3 categories according to their ways of teaching.
I call the first group leaders. They are perhaps the most welcome teachers. They lead to their students along the way of knowledge.
In class ,they only analyze the most difficult and important part of the textbook and leave the details to the students to learn by themselves . They give the students free time to discuss problems instead of showing them everything. They do not give an excessive amount of homework but enough for student s to grasp what they have learnt.

The second group are followers beacause they do not seem to have brains of theirs own and they follow exactly what the textbook says.During the calss,they just transfer evrything from the books to the blackboard , no more ,no less. You can easily find this type of teacher beacause there are always several sleepers in their