Comparative adjectives worksheet with exercises and animal illustrations.

Let's solve each part of this Comparative Adjectives worksheet step by step. We'll follow the rules for forming comparative adjectives based on the instructions provided.

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a) Complete the sentences using the -er form and the word *than*.

We use -er for short adjectives (usually one syllable or two syllables ending in a consonant).

1. The mouse is smaller than the horse.
*(small → smaller)*

2. The cat is cleaner than the dog.
*(clean → cleaner)*

3. The turtle is slower than the rabbit.
*(slow → slower)*

4. The horse is faster than the cow.
*(fast → faster)*

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b) Complete the sentences using by doubling the final consonant and the word *than*.

This applies to one-syllable adjectives ending in a single vowel + consonant, where we double the final consonant before adding -er.

1. The elephant is bigger than the rhino.
*(big → bigger — double 'g')*

2. The hippo is fatter than the zebra.
*(fat → fatter — double 't')*

3. A fish is wetter than a spider.
*(wet → wetter — double 't')*

4. A worm is slimmer than a snake.
*(slim → slimmer — double 'm')*

> Note: "Slim" ends with 'm' (consonant), so we double it.

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c) When the adjective ends in -y, change the -y to -i then add -er.

For adjectives ending in -y (especially after a consonant), we change -y → -i and add -er.

1. A butterfly is prettier than a beetle.
*(pretty → prettier)*

2. A parrot is noisier than a canary.
*(noisy → noisier)*

3. The elephant is heavier than the rhino.
*(heavy → heavier)*

4. A monkey is sillier than a gorilla.
*(silly → sillier)*

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d) When the adjective has 3 or more syllables, we use *more... than*.

For adjectives with three or more syllables, we use more + adjective + than.

1. The peacock is more beautiful than the turkey.
*(beautiful — 3 syllables → more beautiful)*

2. The lion is more dangerous than the jackal.
*(dangerous — 3 syllables → more dangerous)*

3. The dolphin is more intelligent than the tuna.
*(intelligent — 3 syllables → more intelligent)*

4. The snake is more interesting than the worm.
*(interesting — 3 syllables → more interesting)*

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✔ Final Answers:

#### a)
1. smaller than
2. cleaner than
3. slower than
4. faster than

#### b)
1. bigger than
2. fatter than
3. wetter than
4. slimmer than

#### c)
1. prettier than
2. noisier than
3. heavier than
4. sillier than

#### d)
1. more beautiful than
2. more dangerous than
3. more intelligent than
4. more interesting than

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🔍 Summary of Rules:

| Rule | Example |
|------|--------|
| -er (short adjectives) | fast → faster |
| Double final consonant (CVC pattern) | big → bigger |
| -y → -i + -er | happy → happier |
| more... than (3+ syllables) | beautiful → more beautiful |

Let me know if you'd like a printable version or explanation for any specific rule!