Thread: Был transforms the predicate to the instrumental case!

Originally Posted by ShakeyX

So in response why is the example I posted; Концерт вчера вечером был плохой! why is плохой not плохим? as we have the verb Был and a subject + participle.

you can say "плохой" and you can say "плохим", you also can say "плох"

Концерт вчера вечером был плохой! - The yesterday's concert was bad (best choice)
Концерт вчера вечером был плохим! - The yesterday's concert has been being bad (not a good choice for words)
Концерт вчера вечером был плох! - The yesterday's concert was bad/wasn't good
IMHO