"C'est un livre concernant ce garçon."

Translation: This is a book regarding this boy.

[cmyr]

concerning isn't accepted?

[derek3x]

affecting is not accepted as well

[Marcus_J_S]

Shouldn't this be "Concerne" not "Concernent" as there is only one book not more than one?

[prky]

If this is a verb, how come it's spelled concernant (with an a) instead of concernent (with an e?) Is this the spelling of a preposition?

[Horace_G]

Present participle form.