Яке плаття червоне? - просто, коротко і бльше в ужитку. Уникайте перекладу в курсі складеного присудка з "є". http://lib.misto.kiev.ua/UKR/VPRAVA/MOVA/SUCHASNA_MOVA/skladeniy_imenniy_prisudok.txt
"Which" is normally used when you have a choice of options to pick from.
(at an ice cream stand) Which flavour do you want?
Which dress are you going wear tonight?
Which bar shall we go to? White Lion or Pravda?
"What" can also be used in these circumstances, but "which" often sounds a little more natural.
"What" is used when there aren't specific options.
What do you want to eat?
What did you wear?
"Which" can't be used in these circumstances.
Yes... all became so more clearly with you! In your profile discription writed so you a British and learn Ukrainian. And I have so many questions about it. I can undersand why I try to study English (It is need for job), but why are you study Ukranian? For what? Tell me... If I be a British, and I will want to study forin language... I start to lern French... maiby Japan.... Why Ukrainian? We a small country... nobody care about as((
My paternal grandparents were born in Ukraine and moved to Britain. I never learnt Ukrainian when I was a child, but since 2013 I've been on holiday to Ukraine at least once a year. Now I've started taking my friends to visit your wonderful country too, so it's a lot more useful for me to learn Ukrainian than any other language!