This document discusses stress in English pronunciation. It explains that in English, stressed vowels are both longer and louder than unstressed vowels. It provides examples of words with different stress patterns on vowels, such as "cabbage" and "sentence." The document also discusses major and minor stress and compares stress patterns in English and Spanish vowels. It analyzes the stress patterns in three-syllable words with major stress on the first syllable and minor stress on the third.