The case is used to indicate the relation of the Noun with other words in the Sentence.
When a Noun / Pronoun is used as the object of a verb in a sentence, it is said to be in Accusative or Objective case.
Ex: He ate a mango, Cancerous cells destroy our health.
To find the Nomination case, ask – Who or What of the verb.
To find out Accusative case, ask – Whom or What of the verb and the object.
A Noun that comes after the Verb is normally in the Accusative Case. Rama killed Ravana
Who killed Ravana? – RAMA – Nominative case. Rama is the subject.
The horse kicked the boy. Whom did the horse kick? – Horse
Horse is the object – Accusative case
The boys broke the window (object) – Nominative.
The window was broken by the boys (subject) – Accusative.
Noun in English have the same form for both the Nominative and Accusative.
Nominative case normally appears before the verb and the Accusative after the verb.
When a Noun is used to denote ownership of the object, authorship, origin, laid etc., it is said to be in the Possessive Case.
Possessive case indicates ownership or one’s own right over things. So, Possessive case is to be used while expressing one’s ownership.
Ex: This is Krishnan’s bike. – Krishna – Subject. The bike is owned by Krishna. Ownership is indication. The Noun Krishna has to be added with an ( ‘ ) (apostrophe) by ‘s’
(To understand Grammar, whatever be the question asked, first, find out subject, predicate, object and proceed further.)
To arrive at Possessive case, ask whose?
How to form Possessive Case?
– When the noun is singular,
– When the Noun is in Plural and ends up with ‘S’, add (‘) after the last ‘S’.
Ex: Boys’ School Teachers’ Day
– When the Noun is in Plural but does not end in ‘S’, add ( ‘ ), Ex: Children’s book
– When the two nouns are in apposition, then possessive sign is marked on the latter. That is – MGR, the humanitarian’s samadhi.
NOUNS IN APPOSITION
‘Virender Sehwag, Delhi Dare Devilseaptain has been most impressive in the IPL tournament’. We see Virender Sehwag and Delhi Dare Devil’s captain are one and the same.
When one Noun follows another to describe it, the Noun which follows is said to be in Apposition to the Noun which comes before it.
A Noun in Apposition is in the same case, as that of the Noun which comes before it. In this case as mentioned above, both are in Nominative case.
USES OF POSSESSIVE CASE
Possessive case is used generally with the Name of living things.
With Non-Living things, we should say
The roof of the house (not in the house’s roof).
The wheels of the car (not the car’s wheel).
But, for the Personified objects, Possessive case is used with the Name of Personified objects – Nature’s law AT DEATHS DOOR.
Possessive can also be used with Nouns denoting time, space and weight.
Ex: A week’s holiday. A pound’s weight.