The stationary blades you see at the front of the engine are stator/ inlet guide vanes used to direct the flow of air into the engine. 

As the F28s engines are turbojets rather than turbofans, they don't utilise a fan like what would be found on high bypass engines on all modern passenger aircraft. Therefore, the first set of blades you see rotating on the F28 are the first-stage low-pressure compressor blades (which are animated).