4. This paddy field / large / five stadiums

=> This paddy field is larger than five stadiums.

5. A cow / plough / bad / a buffalo

=> A cow ploughs worse than a buffalo does.

6. Mai / speak English / fluent / her sister

=> Mai speaks English more fluently than her sister does.

7. Summer / hot / autumn

=> Summer is hotter than autumn.

8. Life / countryside / peaceful / city

=> Life in the countryside is more peaceful than that in the city.

9. An ox / strong / a horse

=> An ox is stronger than a horse.

10. Quang / write / careful / his friends

=> Quang writes more carefully than his friends do.