Original sentence: The hare’s front legs are much shorter.
Is it grammatically correct? Yes — the sentence is grammatically correct.
Why:
- "The hare’s front legs" is the subject. The apostrophe + s (hare’s) shows the legs belong to the hare.
- "are" is the correct verb because "legs" is plural.
- "much shorter" is a correct comparative phrase that tells how the front legs compare in length.
Small improvement (clearer comparison): Add what the front legs are being compared to. For example:
The hare's front legs are much shorter than its hind legs.
Simple explanation for a 6-year-old: This means the hare's front legs (the ones at the front) are a lot shorter than the back legs. The "'s" means the legs belong to the hare.
Good job — your sentence was already correct! Try the longer version if you want to be more specific.