Grammar: Comparative Adjectives worksheet - Free Printable

Let's solve this worksheet step by step. The task is to complete each sentence using the correct form of the comparative adjective and the word "than".

We need to remember the rules for forming comparative adjectives:

1. One-syllable adjectives: Add -er (e.g., small → smaller)
2. Two-syllable adjectives ending in -y: Change -y to -i and add -er (e.g., happy → happier)
3. Most two-syllable adjectives and all longer adjectives: Use more + adjective (e.g., intelligent → more intelligent)

Now, let’s go through each sentence:

---

1. A deer is ________ (small) ________ an elephant.
→ "small" → smaller
→ A deer is smaller than an elephant.

2. A hippo is ________ (dangerous) ________ a deer.
→ "dangerous" (two syllables) → more dangerous
→ A hippo is more dangerous than a deer.

3. An elephant is ________ (big) ________ a wild boar.
→ "big" → bigger
→ An elephant is bigger than a wild boar.

4. A deer is ________ (shy) ________ a baboon.
→ "shy" (one syllable) → shyer
→ A deer is shyer than a baboon.

5. Hippos are ________ (fierce) ________ rhinos.
→ "fierce" (one syllable) → fiercer
→ Hippos are fiercer than rhinos.

6. The African lion is ________ (strong) ________ the Asian lion.
→ "strong" → stronger
→ The African lion is stronger than the Asian lion.

7. A snow leopard is ________ (interesting) ________ a rabbit.
→ "interesting" (three syllables) → more interesting
→ A snow leopard is more interesting than a rabbit.

8. A parrot is ________ (noisy) ________ a flamingo.
→ "noisy" (two syllables) → noisier
→ A parrot is noisier than a flamingo.

9. The African elephant is ________ (heavy) ________ the Asian elephant.
→ "heavy" → heavier
→ The African elephant is heavier than the Asian elephant.

10. A hippo is ________ (fat) ________ a zebra.
→ "fat" → fatter
→ A hippo is fatter than a zebra.

11. A giraffe is ________ (tall) ________ a flamingo.
→ "tall" → taller
→ A giraffe is taller than a flamingo.

12. A dolphin is ________ (intelligent) ________ a tuna.
→ "intelligent" → more intelligent
→ A dolphin is more intelligent than a tuna.

13. A peacock is ________ (beautiful) ________ an eagle.
→ "beautiful" (two syllables) → more beautiful
→ A peacock is more beautiful than an eagle.

14. A panther is ________ (fast) ________ a wild boar.
→ "fast" → faster
→ A panther is faster than a wild boar.

15. A deer is ________ (weak) ________ a buffalo.
→ "weak" → weaker
→ A deer is weaker than a buffalo.

16. A snake is ________ (poisonous) ________ a baboon.
→ "poisonous" (two syllables) → more poisonous
→ A snake is more poisonous than a baboon.

17. An eagle flies ________ (high) ________ a flamingo.
→ "high" → higher
→ An eagle flies higher than a flamingo.

---

✔ Final Answers:

1. smaller than
2. more dangerous than
3. bigger than
4. shyer than
5. fiercer than
6. stronger than
7. more interesting than
8. noisier than
9. heavier than
10. fatter than
11. taller than
12. more intelligent than
13. more beautiful than
14. faster than
15. weaker than
16. more poisonous than
17. higher than

---

📝 Explanation Summary:

- For short adjectives (1–2 syllables): use -er (e.g., big → bigger).
- For longer adjectives (3+ syllables) or irregular ones, use more + adjective (e.g., intelligent → more intelligent).
- Always include "than" after the comparative form.

This exercise helps reinforce how to compare things using proper grammar and vocabulary. Let me know if you'd like a printable version or extra practice!