IV, 1. Lan is taller than Hoa.
2. This book is thicker than that book.
3. The chair is shorter than the table.
4. These boxes are bigger than those boxes.
5. Miss Trang is younger than her sister.
6. These buildings are higher than those buildings.
7. The boys are stronger than the girls.
8. I am older than my brother.
V, 1. more expensive than
2. faster than
3. more modern than
4. hotter than
5. more beautiful than
6. cheaper than
7. better than
8. more convenient than
9. worse than
10. more clever than
VI , bạn tự làm đi nha , chỉ cần thêm đuôi " est " hoặc "the most " là được , bạn cần phân biệt tính từ dài và ngắn nha