Passive-Active voices

b) modifying with quite rather more c)replacing BE by a lexical copular verb such as feel or seem

We feel rather encouraged and content…. Leonard seemed very interested in and keen on linguistics. In such adjectival uses of the past participle, it is rare to have a by phrase expressing the agent, but sometimes they occur: I feel rather let down by his indiference. Prepositions however can introduce agent-like phrases. (about,at,over,to,with) We were all worried about the complication=The complication worried us all.

Pseudo passives

These have no active form and no possibility of agent addition: The building is already demolished.

Their verb+ed participle recommends as passives. In terms of meaning they of course have an active equivalent. In 1972 the democrats were defeated.

This sentence has dynamic and stative meanings. They occur with current (be,feel,look) and resulting (get,become,grow) copular verbs.