walked slapped passed jogged sobbed fizzed In walked, slapped, and passed, the -ed is pronounced as a t; in jogged, sobbed, and fizzed, it is pronounced as a d. By now you can probably figure out what is behind the difference: the t pronunciation comes after voiceless consonants like k, p, and s; the d comes after voiced ones like g, b, and z. There must be a rule that adjusts the pronunciation
