The way to form possessives in English is to add ‘s to regular singular nouns and noncount nouns and irregular plural nouns not ending in s or to add an apostrophe after the s ending of regular plural nouns and after singular/noncount nouns ending in the sound /s/ to form ‘s.
Celse-Murcia (2013) affirms that, besides possession, the genitive form can indicate:
- A amount, relationship, part to whole, description.
- B description, amount, relationship, part to whole, origin.
- C origin, amount, relationship, part to whole.
- D relationship, description, part to whole, origin.