Do I still need separate tickets with a Eurail Pass?
Your Eurail Pass will serve as your ticket on most trains. With it, you can get on trains run by National Railway Companies, without additional tickets or supplements.
However, keep in mind that many European high-speed and night trains require reservations. This is to ensure that every traveler has a seat or a bed. When boarding one of these trains, you will need to have both your Eurail Pass and your reservation with you.