Apr 23, 2012 07:53
Relative pronoun + finite form of be + past particple + something dependent on participle=> past participle.
> The man who was called by his wife => the man called by his wife.
Relative pronoun + present finite verb + something dependent on verb phrase => present participle.
> The man who lives nearby => the man living nearby.
This is just the general structure: as always, there are finer rules.