Frau Blucher wrote:
Ackshully the t and ed ending for a large group of words are equally acceptable. Like past and burnt and so on.
"Past" and "passed" have different meanings. "Passed" is the past tense of "pass."
Americans use "burnt" as a participle, but usually not as a verb tense. For example, we'll say "burnt toast," "burnt offerings" and so forth. But we seldom say "The man was badly burnt in the accident." For that, we say "burned."
And we cry over spilled (not "spilt") milk.