Hi,
I think you should try to proofread your essay more carefully to avoid grammatical, spelling mistakes, and some awkward phrasing. Below are a few mistakes I found from your essay.
Although I admit that the students can obtain knowledge or information
forfrom books,
I would argue that when they are in classes, the teachers who have good experience can give the students several examples in order to help the students understand deeply about lessons.
The 2 clauses of this sentence don't really go together. How about changing to something like: experienced teachers in class can clarify the students' doubts and help them understand the lessons better with relevant examples.
For instance, without help of
the teachers,
different students may figure out different ways about the same theory in a book. Therefore, in some cases, students need explanations of teachers.
This point I think you need to develop better. Figuring out different ways to understand a theory is not necessarily a bad thing; it actually encourages independent and critical theory. Thus I don't really see the link between these 2 sentences.
The communication skill
ishelps students not only in
theirstudying period (a bit awkward, you can change to school days or something else?), but also in their future career.
Hope this helps. All the best for your exam!