Printable grammar worksheet for practicing comparative and superlative adjectives.

The task involves filling in the comparative and superlative forms of the given adjectives. Here's how to solve it step by step:

Rules for Forming Comparative and Superlative Adjectives:

1. Adjectives with 1 Syllable:
- Comparative: Add "-er" (e.g., big → bigger).
- Superlative: Add "-est" (e.g., big → biggest).

2. Adjectives with 2 Syllables:
- If the adjective ends in -y, change the -y to -i and add -er/-est (e.g., happy → happier, happiest).
- If the adjective does not end in -y, use more/most (e.g., quiet → more quiet, most quiet).

3. Adjectives with 3 or More Syllables:
- Use more/most (e.g., beautiful → more beautiful, most beautiful).

Solution:

Let’s fill in the table based on these rules:

| Adjective | Comparative Form | Superlative Form |
|-----------|------------------|------------------|
| big | bigger | biggest |
| sick | sicker/sicklier | sickest/sickest |
| rich | richer | richest |
| strong | stronger | strongest |
| soft | softer | softest |
| cold | colder | coldest |
| poor | poorer | poorest |
| loud | louder | loudest |
| wealthy | wealthier | wealthiest |
| rough | rougher | roughest |
| weak | weaker | weakest |
| quiet | quieter | quietest |
| short | shorter | shortest |

Explanation:

1. Big:
- Comparative: "bigger" (add "-er").
- Superlative: "biggest" (add "-est").

2. Sick:
- Comparative: "sicker" or "sicklier" (both are acceptable).
- Superlative: "sickest" (add "-est").

3. Rich:
- Comparative: "richer" (add "-er").
- Superlative: "richest" (add "-est").

4. Strong:
- Comparative: "stronger" (add "-er").
- Superlative: "strongest" (add "-est").

5. Soft:
- Comparative: "softer" (add "-er").
- Superlative: "softest" (add "-est").

6. Cold:
- Comparative: "colder" (add "-er").
- Superlative: "coldest" (add "-est").

7. Poor:
- Comparative: "poorer" (add "-er").
- Superlative: "poorest" (add "-est").

8. Loud:
- Comparative: "louder" (add "-er").
- Superlative: "loudest" (add "-est").

9. Wealthy:
- Comparative: "wealthier" (change "-y" to "-i" and add "-er").
- Superlative: "wealthiest" (change "-y" to "-i" and add "-est").

10. Rough:
- Comparative: "rougher" (add "-er").
- Superlative: "roughest" (add "-est").

11. Weak:
- Comparative: "weaker" (add "-er").
- Superlative: "weakest" (add "-est").

12. Quiet:
- Comparative: "quieter" (change "-y" to "-i" and add "-er").
- Superlative: "quietest" (change "-y" to "-i" and add "-est").

13. Short:
- Comparative: "shorter" (add "-er").
- Superlative: "shortest" (add "-est").

Final Answer:

$$
\boxed{
\begin{array}{|c|c|c|}
\hline
\text{Adjective} & \text{Comparative Form} & \text{Superlative Form} \\
\hline
\text{big} & \text{bigger} & \text{biggest} \\
\text{sick} & \text{sicker/sicklier} & \text{sickest/sickest} \\
\text{rich} & \text{richer} & \text{richest} \\
\text{strong} & \text{stronger} & \text{strongest} \\
\text{soft} & \text{softer} & \text{softest} \\
\text{cold} & \text{colder} & \text{coldest} \\
\text{poor} & \text{poorer} & \text{poorest} \\
\text{loud} & \text{louder} & \text{loudest} \\
\text{wealthy} & \text{wealthier} & \text{wealthiest} \\
\text{rough} & \text{rougher} & \text{roughest} \\
\text{weak} & \text{weaker} & \text{weakest} \\
\text{quiet} & \text{quieter} & \text{quietest} \\
\text{short} & \text{shorter} & \text{shortest} \\
\hline
\end{array}
}
$$