Relacionar Columnas Modal Verbs + Have + Past ParticiplesVersión en línea Match the modal verbs with their corresponding past participles to form correct sentences. por Marcella Endrigo 1 can't have 2 shouldn't have 3 could have 4 must have 5 would have 6 might or may have 7 should have used to conclude that sth was impossible in the past used to express conclusions about the past used to say that sth was a good idea, but we didn't do it used to express that sth happened (or not) in the past as a result of sth else used to say that sth wasn't a good a idea, but we did it used to express what was possible in the past used to say that we had the opportunity to do sth, but we didn't