Questions & Answers about La chica tiene mucho calor.
Why does the sentence use tiene instead of a word for 'is'?
The translation says 'very hot', so why does the Spanish use mucho (a lot) instead of muy (very)?
Why doesn't mucho end in an 'a' to match La chica?
The word mucho must match the gender of the noun it directly describes or counts, which is calor (heat), not the person feeling it. Because calor is a masculine word, we use the masculine form mucho.