+338.+ +Co-ordinate conjunctions are also used to connect verbs.+ Verbs
connected in this way have the same subject; and with the use of the
conjunction to connect the verbs, we save repeating the subject.
He _reads_ and _studies_ constantly.
In this sentence _reads_ and _studies_ are words of the same kind and of
the same rank; either could be omitted and the other would make a
predicate for the sentence. They are of equal importance in the sentence
and are connected by the conjunction _and_. They have a single subject,
the pronoun _he_.
This is called a compound predicate.
In the sentence, _He reads constantly_, we have a simple predicate, the
single verb _reads_; but in the sentence, _He reads and studies
constantly_, we have a compound predicate, compound of the two verbs
_reads_ and _studies_. A sentence may have both a compound subject and a
compound predicate. As, for example:
John and James read and study constantly.
In this sentence _John_ and _James_ is the compound subject of both the
verbs, _read_ and _study_. So we have a compound subject and a compound
predicate.