"Possiamo andare a piedi."

Translation: We can walk.

[wulfrunian]

Is "piede" plural because the subject we is plural? An earlier question was singular and was "Lei va a piede alristorante".

[silen03]

It's always "a piedi". It's because usually you use both of them to walk :D

[Kotza]

I think the confusion arises because the English sentence typically uses the singular 'by FOOT', as opposed to 'by FEET', which can make it confusing.

[Nitram.]

I thought it is always "a piedi"...

[AernJardos]

"We can go by foot" is accepted. Which is kind of neat.

[DeanG6]

I think "we can go by foot" should be the preferred translation. But I'm not an expert. I just like that it more accurately reflects the literal translation.

[inconveniente]

Why "by foot" and not "by feet"?? La passeggiata si fa con due piedi e non con uno!

[Germanlehrerlsu]

Logical question that unfortunately has no logical answer. Like so much in language, it just is. I'd add though that other phrases (involving body parts) also use a singular, even though more than one part of the body is used, as in "by hand", "lend a hand", "within ear shot" (meaning within hearing range), "to keep an eye on someone/thing", "strongarm someone" (meaning force or put pressure on someone), to fight "tooth and nail," to put one's 'finger' on something, (meaning to locate it or remember it), etc.