Meaning: She makes musical sounds with her voice that are pleasant to hear.
Choice of Words: Sing is to make musical sounds with your voice. Sweet means pleasant to taste or smell.
Alternative Expressions
The girl sings a sweet melody.
Meaning: This means that the girl is singing a song that sounds nice. It's like saying, Her voice is making beautiful music.
Choice of Words:The is an article that is used before a noun to indicate that it is specific. Girl is a noun that refers to a young female person. Sings is a verb that means to produce musical sounds with your voice. A is an article that is used before a noun to indicate that it is singular. Sweet is an adjective that describes something that is pleasing to the taste or smell. Melody is a noun that refers to a series of musical notes that are played or sung together. When you put them together, "The girl sings a sweet melody" means that the young female person is producing musical sounds with her voice that are pleasing to the ear.
The young lady sings a harmonious tune.
Meaning: This means that the girl is singing a song that sounds nice. It's like saying, Her voice is making beautiful music.
Choice of Words:The is an article that is used before a noun to indicate that it is specific. Young is an adjective that describes someone who is not yet fully grown. Lady is a noun that refers to a woman who is polite and well-mannered. Sings is a verb that means to produce musical sounds with your voice. A is an article that is used before a noun to indicate that it is singular. Harmonious is an adjective that describes something that is pleasing to the ear. Tune is a noun that refers to a series of musical notes that are played or sung together. When you put them together, "The young lady sings a harmonious tune" means that the polite and well-mannered young woman is producing musical sounds with her voice that are pleasing to the ear.