The three teams we faced in our group, Serbia, Denmark and Slovenia, were all stubborn and did not pose much of a threat, but England’s defence was shaky whenever Slovakia came at us in the first half.
The Swiss will be well-organised again, just with more quality and carrying more of a threat. They have been one of the best teams at these Euros so far, and after coming close to beating Germany they absolutely outclassed Italy.
If we play as badly as we did in the first 95 minutes against Slovakia, then the same could happen to us.
To avoid that, England need to learn their lesson about what has gone wrong so far and ensure it does not happen again.
If we go on to win this tournament then no-one will care about what happened in our first four games or how poor we were, but we are going to have to improve massively to even get close.
Alan Shearer was speaking to BBC Sport’s Chris Bevan.