If you stand too close to the fire, it could singe the edge of your jacket.Did she singe her ponytail as she blew out her birthday candles?Sadly, the family photos were singed in the fire.
A sentence is a sentence because it has a subject (noun or noun phrase), a predicate ( verb) and punctuation as well as the other parts of speech like pronouns ( she, it him, her, they, them)...