§ 5. The subject is the principal part of a two-member sentence which is grammatically independent of the other parts of the sentence and on which the second principal part (the predicate) is grammatically dependent, i. e. in most cases it agrees with the subject in number and person.
N o t e. — There are cases, however, when there is no agreement in number
(see Chapter XV, § 19–21).
The subject can denote a living being, a lifeless thing or an idea.