4 a) Read the rules. Give more examples.

The question refers to the 'Grammar' section on Possessive case. The instructions are to read the rules and give more examples of possessive case. Here are examples:

1. **Singular Possessive**:
- The boy's book (книга мальчика)
- The dog's bone (кость собаки)
- Mary's dress (платье Мэри)
- A car's engine (двигатель автомобиля)

2. **Plural Possessive** (for plural nouns ending in 's')
- The boys' toys (игрушки мальчиков)
- The girls' school (школа девочек)
- The students' projects (проекты студентов)

3. **Plural Possessive** (for plural nouns not ending in 's')
- The children's games (игры детей)
- The men's clothes (мужская одежда)
-The women's rights (права женщин)

4. **Possessive using 'whose'**:
- Whose book is this? (Чья это книга?)
- Whose car is that? (Чья это машина?)