What is a modifier, a subject, and an object

Even the insistent cough of the woman next to him wasn't enough to draw his eyes away from the tiny type of the ancient book its pages were brittle and felt like they could crumble at the slightest disturbance he noticed the musty odor if each page as he carefully it over.

Plzz me between what two words does the ellipses appear in the following sentence? "the his breakfast." "the" and "cat" "cat" and "ate" "ate" and "his" "his" and "breakfast"

What's my name? if you know you know