Regular verbs form the past tense by the rule: Verb + the ed. For example, to play-played, to look-looked. Pronunciation and spelling: End ed pronounced [d] after a vowel or a voiced consonant: stayed, listened. After unvoiced consonant, hissing or whistling it is pronounced [t]: kissed, cooked. After the t and the d - like [id]: to found (base) - founded. If the verb ends in y preceded by a consonant - it changes to i and add the ending ed: to copy-copied. If the verb ends in a consonant preceded by a short vowel - the final consonant is doubled (to preserve the pronunciation of the sound of a closed syllable), and added to the end of the ed: to stop - stopped [stopt].