Here is a small list of common questions with hopefully simplistic answers. If it is regarding ebike laws, it is always best to check your local city, state, provence or countries rules and regulations as these can vary widly between areas.
Yes, all electric bikes function as normal bicycles when the motor is off, so you can simply ride your electric bike the same way you would a traditional bicycle, whether the motor is switched off or if the battery is dead. You can also ride the bike normally by simply switching the pedal-assist function to zero.
No. It doesn’t. That wouldn’t make much sense. You see, the goal of an electric bicycle is to assist you, not for you to assist it.
Some ebikes DO have regenerative braking though – which charges the battery by capturing some of the energy normally lost during braking.