Bonsoir
Bon j’ai un DM et je n’y arrive pas…je suis pas très forte en anglais…j’espère que vous pourrez m’aidez !

En ce qui concerne les avions" se dira:

As far as planes are concerned
As far as planes are concerning
As far as planes is concerned
As far as planes is concerning
As far planes are concerned
As far planes concerned
As far so planes concerned

Merci !