Not in Australia's wildest dreams could they have believed they would be 2-0 up in this Ashes series after playing only six days of cricket. They were put under the pump by England in the first Test in Perth, then pulled off an incredible turnaround. It put them on a wave of confidence going into the second Test in Brisbane, where they gave England a lesson in how to play Test cricket, particularly day-night Test cricket.

This series is not dead, but it's not far from it. If England don't win the third Test in Adelaide, it will get embarrassing. I got a close look at England's style during the 2023 Ashes in the UK. For all of the talk about this tour being their chance to finally win a series in Australia, there was a lot of scepticism in this country about the way England play. Would England's batting be suited to Australian conditions? Would they play big shots and find ways to get out? Would they crumble under the pressure of the big moments?

Right now, all of the Australians who were sceptical about England are being proved right. There is a lot I like about England's attitude. I love it when sportspeople play without fear, because that helps them push the boundaries of what is possible. But I don't like the idea that pressure or expectation needs to be removed. The great players thrive under pressure, and the best teams hold each other to account.

I played in an Australian team that won a lot, under some tough captains in Allan Border, Mark Taylor, Steve Waugh, and Ricky Ponting. Yes, there were the coaches like Bob Simpson and John Buchanan, but it was the captain and senior players who always ran the dressing room. Even as a young player, I felt like I was allowed to have my say and opinion. Everyone took ownership of the team.

Then, if someone stepped out of line, they were held accountable by the other players. If someone made a mistake on more than one occasion - which didn't happen very often - they were told. We had some huge personalities - none bigger than the great Shane Warne - but we all felt that what we were doing was for the team and for each other. Matthew Hayden used to say we pulled together because of the love we had for each other, such was the amount of time we had as a group. That accountability, responsibility, and adaptability all came together when we stepped on to the field as a team.

Admittedly, all of these things are easier when a team is winning, which England are not doing right now. My concern for England was the message of "this is the way we play" yielded a culture that lacks accountability. It was almost that England had decided conditions had to adapt to them, rather than England adapting their game to suit the conditions.

Finally, in the aftermath of the defeat in Brisbane, it looks like the penny has dropped. Both Ben Stokes and Brendon McCullum conceded there are issues, and they need to do something about it. I have no problems with what the England leaders said in public at the Gabba. If Stokes and McCullum have been strong in the media, you can guarantee they have been even stronger behind closed doors.

Will we now see a new version of Bazball? Like I said, I like the element of playing without fear. If England can add the ingredients of pressure and accountability, then they might still be on to something. For all that England have been criticised, Australia deserve a huge amount of credit.

If England had been told they would play an Australia team without all of Pat Cummins, Josh Hazlewood, and Nathan Lyon, they would have been rubbing their hands with glee. And yet, Australia pulled off victory in Brisbane with all of their other players standing up. Mitchell Starc has been absolutely outstanding, supported by Michael Neser, Scott Boland, and Brendan Doggett. Alex Carey put in an absolute masterclass behind the stumps, possibly the best wicketkeeping performance I've ever seen - and I played with Ian Healy and Adam Gilchrist.

Perhaps the biggest revelation for Australia has been the shift in the batting order. Before the series, when there seemed to be a lot of discussion about the Australia line-up, I said there was only really a debate about one area - Usman Khawaja's opening partner. That debate has been settled, just not in a way anyone expected. Ever since Travis Head stuck his hand up to open when Khawaja got hurt in Perth, Australia have looked like a different team. Now, there seems to be the opportunity for Head and Jake Weatherald to cement themselves as the opening pair. Khawaja might find it tough to get back in, although Australia coach Andrew McDonald has suggested he could bat at number five.

Injuries will mean England's Mark Wood and Australia's Josh Hazlewood will miss the third Test in Adelaide and the rest of the series. That is a great shame for both men. I know how much hard work it is to bowl fast, the effort that goes into coming back from injuries, and how desperate both would have been to play a full part in this series. They will be devastated.

Adelaide will be a good pitch, with something in it for batters and bowlers. Australia will certainly recall Lyon and it looks like Cummins will be back to lead. Australia will remember how England came from 2-0 down to draw the last Ashes. They will know England are dangerous. On this occasion, they have England by the throat and must not let up just because some big names are returning. They cannot get complacent. An Australia team should always think it can win every Test it plays, so for that reason this team should be thinking about winning 5-0.

England will know they have no choice but to turn things around in Adelaide. If they don't, then it really could be 5-0.

Glenn McGrath was speaking to BBC Sport's chief cricket reporter Stephan Shemilt.