The girl smiles happily at the boy.

Meaning: This means that the young female child is forming a pleasant expression with the mouth turned up at the corners in a state of happiness or joy at the young male child.

Choice of Words: Girl is a young female child. Smiles means to form a pleasant expression with the mouth turned up at the corners. Happily means in a state of happiness or joy. Boy is a young male child.

Alternative Expressions

Related Expressions