Question

why are shakespeare's plays considered difficult for modern students to understand

Answer 1

because now a days the Shakespearean language is not used as the use of standard language is there

Answer 2

One of the reasons, why, Shakespeare’s plays considered difficult for modern students to understand is that most of the lines used iambic pentameter that does not resemble the way we speak in today's time.

Also because his play involved a lot of feelings and understanding which one cannot easily get through and learn.