8. Write the comparative form of the adjectives in brackets.

Here are the answers to exercise 8:

1. The garden in front of our house is **bigger** than the garden behind the house.

2. His brother is five years **younger** than him.

3. Houses are usually **more expensive** than flats.

4. Is Moscow **older** than St Petersburg?

5. Their living room is **more comfortable** than their dining room.

6. Is the bus **fuller** than usual?

7. Motorcycles are **more dangerous** than cars.

8. Our new flat is **more spacious** than our old one.

**Explanation:**

In English, to form the comparative form of an adjective, we usually add '-er' to the end of short adjectives (like 'big', 'young', 'old', 'full', and 'spacious'). However, for longer adjectives (two or more syllables), we usually use 'more' before the adjective (like 'expensive', 'comfortable', and 'dangerous'). There are also irregular forms (which are not included in these examples).

Let's go through each example:

1. **big** becomes **bigger**

2. **young** becomes **younger**

3. **expensive** becomes **more expensive**

4. **old** becomes **older**

5. **comfortable** becomes **more comfortable**

6. **full** becomes **fuller**

7. **dangerous** becomes **more dangerous**

8. **spacious** becomes **more spacious**