Це and Цей
In context, how do I know which of these is more correct to use?
I'm not a native speaker of English so I might have missed some examples where it doesn't work but I'd say use це when you can replace "this" with "it":
This (it) is a cat. – Це кіт.
I like this cat. – Я люблю цього кота.
This (it) is a horse. – Це кінь.
This horse is small. – Цей кінь маленький.
English also prefers to use "These/Those" for plurals, which is not the case in Ukrainian and Russian:
- (uk) Це мої друзі. = These are my friends
- (ru) Это мои друзья. = These are my friends.
The demonstrative used as a subject of the sentences and referring to the object(s) pointed at is always the same це, no matter what.