FORMATION OF THE POSSESSIVE CASE

(1) When the noun is singular, the Possessive Case is formed by adding‘s to the noun; as,

The boy’s book; the king’s crown.

Note- the letter  s is omitted in a few words too many hissing sounds would come together; as,

 For conscience’ sake; for goodness’ sake;

For justice’ sake; for Jesus’ sake; Moses’ laws.

(2))When the noun is Plural, and ends in s, the Possessive Case is formed by adding only an apostrophe; as,

Boys’ school; girl’s school; horses’ tails..

(3)When noun is Plural but does not end in s, the Possessive sign is formed by adding’s as

  Men’s club; children’s books.

 When a noun or a title consists of several words , the Possessive sign is attached only to the last word; as,

 The King of Bhutan’s visit.

The Prime Mister of Mauritius’s  speech.

When two nouns are in apposition the possessive sign is put to the latter only; as,

    That is Tagore the poet’s house.

also when two nouns are closely connected, the possessive is put to the latter; as,

 Karim and Salim’s bakery.

William and Mary’s reign.

Each of two or more connected nouns implying separate possession must take the possessive sign; as,

  Raja Rao’s and R.K. Narayan’s novels.

Goldsmith’s and Cowper’s poems.