Writing prompt: Will E-book Be Necessary in the Future?

Student essay:
A growing number of people turn to e-book for pleasure , and e-book is gradually taking place of real books.
Because of the obvious convenience of e-book, People save the time and money for searching for and buying books. What's more, e-book provides diversities of contents, which is as the same as real books. Moreover, reading e-book requires no money while reading real books involves money. Accordingly, e-book caters for the majority of people.
Although e-book has many advantages, its disadvantages are inevitable, reading for long hours in front of the machine is bad for our eyes. What's worse, in terms of newly-published books, they can't be searched on the machine.
It seems e-book well conforms to modern life, and it's necessary in the future, especially for the adults. Generally speaking, people who have got married don't have much time for reading, let alone going to the library to absorb new knowledge. Actually, they are more concerned with family matters and their working. E-book is of great flexibility. So, as long as people are reminded to read, e-book can serve them anytime without any trouble. However, I think e-book can't completely take place of real books. The limits listed above keep it in the essential place rather than the most crucial place.
In brief, e-book takes on a prosperous trend. With the advantage of keeping pace with modern life, I think e-book will be a necessary in the future.

Corrected essay:
A growing number of people turn to e-books for pleasure, and e-books are gradually taking the place of real books.
Because of the obvious convenience of e-books, people save time and money searching for and buying books. What's more, e-books provide diverse content which is the same as real books. Moreover, reading e-books requires no money, while reading real books involves money. Accordingly, e-books cater to the majority of people.
Although e-books have many advantages, their disadvantages are inevitable. Reading for long hours in front of a machine is bad for our eyes. What's worse, in terms of newly-published books, they can't always be searched on the machine.
It seems e-books conform well to modern life, and they are necessary in the future, especially for adults. Generally speaking, people who have got married don't have much time for reading, let alone going to the library to absorb new knowledge. Actually, they are more concerned with family matters and their work. E-books are of great flexibility. So, as long as people are reminded to read, e-books can serve them anytime without any trouble. However, I think e-books can't completely take the place of real books. The limits listed above keep them in an essential place rather than the most crucial place.
In brief, e-books take on a prosperous trend. With the advantage of keeping pace with modern life, I think e-books will be necessary in the future.