Inversão da ordem/posição dos verbos - did, do, have, to be

"Officers can be seen in the footage pushing the crowd back and one officer is shown to remove his Taser from its holster, although at no time was it ever deployed. Clearly, in those initial early stages, officers would have been unaware of what had occurred and where the suspect(s) might be, and their priority would have been to prevent further injury or loss of life.

Gostaria de saber quando podemos colocar o verbo "to be" antes do sujeito, mesmo quando não se tratar de uma pergunta. Nesse caso, poderíamos colocar o verbo "to be" depois do sujeito?