Here's why:
* The vowel sound in "stove" is a short "o" sound. This is the same sound as in words like "hot", "stop", and "box".
* Long vowel sounds are typically represented by a vowel followed by a silent "e" (like "bake"), a double vowel (like "feet"), or a vowel followed by a consonant and a silent "e" (like "cone").
So, while "stove" has the letter "o", it doesn't have a long vowel sound.