I.

2. fast - faster - the fastest

3. big - bigger - the biggest

4. short - shorter - the shortest

5. good - better - the best

6. noisy - noisier - the noisiest

7. long - longer - the longest

8. small - smaller - the smallest

9. happy - happier - the happiest

10. old - older - the oldest

11. hard - harder - the hardest

12. young - younger - the youngest

II.

1. black ⇒ white

2. heavy ⇒ light

3. strong ⇒ weak

4. expensive ⇒ cheap

5. fat ⇒ thin

6. long ⇒ short

7. big ⇒ small

8. late ⇒ early

9. wide ⇒ tight

10. good ⇒ bad

11. noisy ⇒ quiet

12. young ⇒ old

13. near ⇒ far

14. front ⇒ opposite

15. busy ⇒ free

16. cold ⇒ hot

17. left ⇒ right

18. full ⇒ empty

19. easy ⇒ hard

20. tall ⇒ short

III.

1. My school is bigger than your school.

2. Lan is younger than Hoa.

3. My father is older than my mother.

4. This ruler is longer than that ruler.

5. This room is larger than my room.

6. The boys are stronger than the girls.

7. My house is taller than your house.

8. Nam is shorter than his sister.

IV.

1. bigger

2. longer

3. highest

4. shortest

5. older

6. deepest

7. hottest

8. shorter

9. younger

10. smaller

11. taller

12. thicker

13. longest

14. higher

15. happiest

16. best

17. thinnest

18. coldest

19. tallest

20. richer

V.

1. Hoa is shorter than Lan.

2. My sister is smaller than me.

~Good luck~

III/

1. My school is bigger than your school.
2. Lan is younger than Hoa.
3. My father is older than my father.
4. This ruler is longer than that ruler.
5. This room is larger than my room.
6. The boys is stronger than the girls.
7. My house is taller than your house.
8. Nam is shorter than his sister.

IV/

1. River are bigger than lakes

2. The MeKong river is longer than the Red river.

3. Everest is the highest moutain in the world.

4. Hoa is the shortest girl in the class.

5. My mother is older than my teacher.

6. The Amazon River is the deepest river in the world.

7. Summer is the hottest season in a year.

8. Nga and Lan are shorter than Minh.

9. My mother is younger than my father.

10. Ha Noi is smaller than Ho Chi Minh City.

11. This boy is taller than that boy.

12. A dictionary is thicker than a notebook.

13. The Great Wall is the longest structure in the world

14. Buildings are taller than houses.

15. Lan is the happiest student in my class.

16. My parents are the best people.

17. This girl is the thinnest in her class.

18. Winter is the coldest season in a year.

19. Tom is the tallest boy in his family.

20. I have never met a richer woman than this one.

V/ 

1. Hoa are shorter than Lan.

2. My sister is smaller than me.

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~ Chúc bạn học tốt ~

(Bài 1 với bài 2 là 2 ảnh dưới đây nhé~)