Hello. You forgot to put the text to which the question refers, which makes it impossible for me to provide an exact answer. However, I will try to help you in the best possible way.
To answer this question it is necessary to read the entire text. The phrases that the author shows his opinion of Shakespeare's role in the future, will be the one in which the author shows an assumption about what he thinks will happen. These sentences are likely to be constructed using verbs in the future tense, so the author testifies that he is making an assumption, a projection, about what Shakespeare will represent.
