while I was away
Tom cuidou do meu cachorro enquanto eu estava fora.
Tom looked after my dog while I was away.
Alguém esteve aqui enquanto eu estava fora?
Was anyone here while I was away?
Isso deve ter ocorrido enquanto eu estava fora.
This must have happened while I was away.
Alguém limpou o meu quarto enquanto eu estava fora.
Someone cleaned my room while I was out.