Listen to the first two minimal pair sentences again and look at the circles on the left. The big circles are the strongly stressed syllables, and the small circles are the weakly stressed syllables.
OoOO     Put the ‘x’ here./Put the axe here.
ooOooO Can I borrow a pen? / Can I borrow a pan?
Listen to the rest of the sentences and bold the sentence stress (the strongly stressed syllables in the most important words in the sentence).