Construction method of possessive case of

1, general situation (including singular nouns and plural nouns without suffix -s) plus -'s:

Children's books children's books

Today's newspaper today's newspaper

2. Plural nouns with suffix -s are abbreviated as ('):

girls'school

Smith's car Smith's car

Pay attention to singular nouns with suffix -s, usually with -'s:

The boss's plan. The boss's plan

The hostess's worry

3. For names with suffix -s, you can add s or just save the apostrophe ('):

Dickens' novels

Charles' job. Charles' job

Anything that ends with a sibilant without the suffix -s will add -'s: Marx's works.

4. The possessive case of coordinate nouns connected with and can be divided into two situations, that is, when expressing all their relations, you should add -'s after coordinate nouns respectively, and when expressing all relations with * * * *, you should only add -'s after the last noun:

Tom and Jim's Rooms Tom and Jim's Rooms.

Tom and Jim's room Tom and Jim's room.