Tween animation, tween shape, how to use traditional tween, and when to use it respectively, I always use it wrong and my creation fails.

Tween animation: When making flash animation, you need to do "tween animation" between two key frames to realize the movement of the picture; The computer automatically calculates the interpolation frame between two key frames after inserting the tween animation. There are two kinds of tween animation in FLASH animation: one is shape tween, which is used for shape animation; The other is animation tween, which is used for animation of graphics and components. The types of Flash CS4 tween animation include moving tween animation, shape tween animation and traditional tween animation, which is also one of the most important means of expression in Flash. There are two kinds of tween animation: motion tween animation and shape tween animation. Tween animation refers to the animation in which a component is placed on a key frame on the time frame panel of Flash, and then the size, color, position and transparency are set. The value of is changed at another keyframe, and Flash will automatically create an animation based on the value between the two keyframes. After the tween animation is established, the background of the time frame panel becomes light purple, and there is a long arrow between the start frame and the end frame. The elements that make up tween animation are components, including movie clips, graphic components, buttons, characters, bitmaps, combinations and so on. But they can't be shapes. Tween animation can only be completed after shapes are combined (Ctrl+G) or converted into components. Shape tween animation is an animation in which a shape is drawn on one key frame and then changed or drawn on another key frame on the Time Frame panel of Flash. Flash will automatically create an animation according to the value or shape of the frame between them, which can realize the mutual change of color, shape, size and position between two graphics. After the shape tween animation is established, the background of the time frame panel turns light green, and there is also a long arrow between the start frame and the end frame. The elements that make up the shape tweening animation are mostly shapes drawn with a mouse or a pressure-sensitive pen, rather than graphic elements, buttons and characters. If you want to use graphic elements, buttons and characters, you must decompose them (Ctrl+B) before you can make shape tweens.