Is this correct grammar?

[snade17]

Hi, dear experts. Is this sentence grammatically correct? Does it sound OK in English?
"Only in times of trouble can one tell whether the person considered a friend is really such."

[renzot25]

Yes it's grammatically fine....!

[RonBee]

Hi, dear experts. Is this sentence grammatically correct? Does it sound OK in English?
"Only in times of trouble can one tell whether the person considered a friend is really such."

I suppose it is grammatically correct, but whether it sounds OK is another matter. Perhaps:

Only in times of trouble can one tell whether a person considered a friend really is a friend.

Only in times of trouble can one tell whether a person considered a friend truly is a friend.

When you are going through hard times you find out who your friends really are.

The people who stick with you during troubled times are true friends.

~R

[snade17]

Thank you very much for your detailed explanation. It was of great help to me.