Why it's impossible to write: there's nothing to be afraid
Because you are missing the preposition. You are afraid OF something.
Or afraid FOR, but that has a different meaning.
Is this sentence with a double negative correct: "Není se ničeho bát."
It is incorrect.
Why would it be incorrect? Can you explain further please? Because Czech requires double, triple etc. negatives, it would seem that a negative sentence would require negation in the pronouns associated with the negative verb.
"Není se ničeho bát."
Not in this type of sentence "Mít se čeho + infinitive" "Být čeho + infinitive".
Šlo by: There is nothing to worry about?
Why use se and not si?
The verb is "bát se", you have to remember that.
Would "It is nothing to fear" then be "To neni....." Thanks
To není nic, čeho bychom se měli bát. - It is nothing we should fear.
I do not like shortening it further more.