Go to: weak verbs in '-d' and weak verbs formed with -t. There is one verb that is irregular and weak in the past tense, but strong in the the non-progressive participle: do, did, done. A few verbs ...

It is also used to describe or give opinions about something or someone in the past, or to say what was happening when something else took place. The imperfect tense or that incomplete, habitual ...