shine / shined / shone

When shine means to give off light and takes no object, the past and the past participle are shone: The sun shone. The lamp shone. The lamp has shone. When shine means to direct light, it takes an object. The past and the past participle are shined: He shined the flashlight on the lock. He has shined the flashlight on the lock. When shine means to polish, it also takes an object, and the forms are shined: He shined the shoes. He has shined the shoes. Do not use The sun shined.