Looking for a website that could clear up the usage of "past vs passed" to me, the first search result was a xena fanfic site of sorts. It was designed to help fanfic writers, and all the examples are about xena. :P
past vs. passed: "Past" refers to time, to events that happened before now; "passed" is an action, referring to someone passing by.
Gabrielle couldn't help but notice the grim-faced peasants who stared at them. "Let me guess, you've passed through this town before."
Xena nodded, her own face just as grim as their audience. "My past is filled with towns like this one."
past vs. passed: "Past" refers to time, to events that happened before now; "passed" is an action, referring to someone passing by.
Gabrielle couldn't help but notice the grim-faced peasants who stared at them. "Let me guess, you've passed through this town before."
Xena nodded, her own face just as grim as their audience. "My past is filled with towns like this one."