Men _who have become class-conscious_ do not make good soldiers.
In this sentence the clause, _who have become class-conscious_, modifies
the noun _men_, and is introduced by the relative pronoun _who_.
2. +An adjective clause may modify the noun which is the object of the
verb+, as:
The men supported the party _which fought for their rights_.
Here the clause, _which fought for their rights_, is an adjective clause
introduced by the pronoun _which_, and it modifies the noun _party_,
which is the object of the verb _supported_.
3. +An adjective clause may also be used to modify the noun which is
used in the predicate complement+, as:
That was the book _which I enjoyed_.
In this sentence the clause, _which I enjoyed_, is an adjective clause
modifying the noun _book_, which is used as the predicate complement
with the copulative verb _was_.
4. +An adjective clause may also be used to modify the noun which is
used as the object of a preposition+, as:
He arrived on the train _which was late_.
Here the adjective clause, _which was late_, modifies the noun _train_,
which is the object of the preposition _on_.
Sometimes it is a little difficult to discover these adjective clauses,
for frequently the connecting word is omitted, as for example: