Vedieť

• Ja viem 


  I know
• Ty vieš


  You know (informal)
• On vie


  He knows
• My vieme


  we know
• Vy viete


  You know (formal)
• Oni vedia

  They know
• Ja neviem

  I don't know
• Neviem či mám horúčku

  I don't know if I have a fever