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