Australia captain Michael Clarke has vowed to lead an all-out assault on England as the hosts go in search of a 5-0 Ashes series triumph.
Clarke has already led his side to emphatic victories in the opening three Tests to end England's recent Ashes dominance and he wants to rub salt into the wounds by winning in both Melbourne and Sydney.
The fourth Test gets under way at the MCG on Boxing Day with the fifth and final Test at the SCG from January 3.
"People have been asking me how we're going to approach the Boxing Day Test after already winning back the Ashes," said Clarke.
"The answer is easy - full throttle. Momentum is a rare and precious commodity. When you have it you run with it as hard as you can because you're never sure how long it will last.
"We want to show our many thousands of fans in Melbourne and Sydney the same dominant, aggressive cricket we have been able to play at near full stadiums in Brisbane, Adelaide and Perth."
Clarke has also paid tribute to England off-spinner Graeme Swann who will miss the remainder of the series after his decision to retire.
"I couldn't believe it when he announced his sudden retirement on Sunday," Clarke admitted.
"England are going to miss him for a number of reasons, not just because he was a high quality spinner.
"He was also integral to England as a slips fieldsman with a very good set of hands and he's one of those cheerful guys who always make life in the changing rooms more fun."
Watch the fourth Ashes Test live on Sky Sports 2HD from 10.30pm on Christmas Day