By 'author of the essay reading Shakespeare' do you mean us readers?
As, I'm currently doing right try and read classical novels like 'How to kill a mockingbird'. There's no need to rush if it's the first time reading, the more you read (or few of classicals) you will kind off get what the author is making the character speaking. Also understanding the aspect of the story. :)
A: <span>A clause has a subject and verb but a phrase does not</span>
<u>Answer:</u>
The topless towers of ilium were believed to be indestructible, but Helen led to their ruination, which parallels Faustus’s downfall. This line best explains the underlined image contributing to the meaning of the passage. The topless towers of ilium was allusion to the Helen of Troy. She was very beautiful however abducted paralleling the fall of Faustus due to his over ambitious and greedy nature. Similarities are drawn of the fall of Dr. Faustus and the topless tower of ilium.