When you add "-ed" to present tense verbs, you usually create the past tense. When you add "-ed" to present tense verbs that end it "t," you normally create a past tense verb with an additional syllable that is pronounced "id."
want (one syllable) - wanted (two syllables)
heat (one syllable) - heated (two syllables)
count (one syllable) - counted (two syllables)
attempt (two syllables) - attempted (three syllables)
connect (two syllables) - connected (three syllables)
report (two syllables) - reported (three syllables)
Now, practice pronouncing the past tense of these words that end in "t" sounds: greet, hunt, pat, cheat, suit, accept, alert, interest, permit