In English, the simple past tense of regular verbs usually ends in –ed. Sometimes, –ed is added to the present tense form:
You play the piano very well.
I played basketball in high school.
(Or, if the verb ends in e, then only a –d is required to form the past tense: I like to dance./She danced until dawn.)
Other times, a change in spelling is required:
“Please control yourself!”
“Laura controlled the business until her death.”
“Can you identify the assailant?”
“John identified the problem.”
The rules are different for irregular verbs; in some cases, a –d or a –t is added to the simple present (root or base) form:
“If I can hear it, it’s too loud.”
“I heard the news on the radio.”
“I mean what I say.”
“I meant to send this last week.”
“Just deal the cards!”
“Let me tell you how I dealt with that problem.”
This “t-form” sometimes requires a change in spelling, such as dropping a vowel: feel (felt), creep (crept), keep (kept).
For some verbs, the past tense can be formed with either –t or –ed:
“Don’t leap for joy until the official announcement is made.”
He leaped at the opportunity.
She leapt across the stage.
“Burn Jim’s papers, as he requested.”
Sue burned the pan.
“My hand got burnt in the fire.”*
Similarly, the past tense of dream can be formed with –ed or with –t:
“I never dreamed he would take my advice!”
Larry dreamt about the war for years.
“I dreamed about you last night.”
Brian dreamt up a scheme that just might work.
The preferred form of a word sometimes changes over time and varies by region. As a writer, you may prefer the –t form in some contexts and the –ed form in others. Be consistent in your usage throughout the same piece!
* In the U.S., burnt is more commonly used as an adjective:
The priest chanted over the burnt offering.
“I don’t like burnt toast.”