Łysy jak kolano!
My grandfather is bald
he is without hair
Yes, "Mój dziadek jest łysy".
Regretfully, grandpa's baldness was not accepted by Duolingo.;-)
A bald move by Duolingo to refuse it. ;-)
I was about to type: "My hair does not have grandfather"... Why, brain, do you do this to me?
Reminds me of some of the first (and only) sentences I have read on Irish Duolingo, because of its bizarre word order. Water drinks Paul, instead of Paul drinks water. :D
My was 'my grandfather has no hair' not accepted?
That's actually an accepted answer.
Is the singular used only when referring to one, literal hair, unlike English?
Yes, "włos" would be literally one string of hair.
Would bald work?
Although the meaning is the same, the sentences are different:
Mój dziadek nie ma włosów - My grandpa has no hair
Mój dziadek jest łysy - My grandpa is bold
My grandpa is bold - Mój dziadek jest [śmiały/odważny]
For moj they require an accent but the word sounds like an an unaccented o. Why?
Ó makes exactly the same sound as U. So the similarity between O and Ó is only visual.
My grandad doesnt have any hair is wrong
We accept it, just as "granddad".
Writing "any hair" instead of just "hair" caused me to fail.
We accept "My grandfather does not have any hair"...