Possessive

's and of

Look at the example:

the boy's name = the name of the boy

We normally use 's for: people, animals, organizations and countries.

• the boy's name
• the cat's tail
• the club's rules
• China's influence

We also use 's for when/time expressions.

• tomorrow's weather
• a month's vacation
• yesterday's news
• today's paper

For other cases we normally use an of structure.

• the name of the book
• the leg of the table
• the rules of grammar