In addition to subject-pattern adjective clauses, there are
also object-pattern ones. They have that name because
in them, the relative pronoun replaces the object of
the clause.
Examples
| 1. | The person called me. We met the person at The person who(m) (that*) we met The sentence with who(m) has an adjective | 
| 2. | I enjoyed talking to the person. We met I enjoyed talking to the person who(m) Again, the sentence with who(m) has | 
| 3. | The trip was quite interesting. I took The trip that (which*) I took last week The sentence with that has an adjective | 
| 4. | I enjoyed the trip. I took the trip I enjoyed the trip that (which*) The sentence with that has an adjective | 
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Special Notes:
| 1. | Adjective clauses come after the nouns that wrong: *The person called me who(m) right: The person who(m) we met wrong: *The trip was quite interesting right: The trip that I took last week | 
| 2. | Do not use both an object pronoun and wrong: *The person who(m) we met him right: The person who(m) we met at wrong: *I enjoyed the trip that I took it right: I enjoyed the trip that I took last week. | 
| 3. | The relative pronouns whom and that are The relative pronouns that and which |