Meaning: This sentence describes a girl throwing a soft toy.
Choice of Words: The word "threw" is the past tense of the verb "throw" and it means to send something through the air with your hand. "Soft" means not hard or firm. "Toy" is an object that is used for play. So, "The girl threw the soft toy" means the girl sent the not hard or firm object that is used for play through the air with her hand.