I watched a video on essential Japanese phrases and saw this sentence しりませんでした which translates to “I didn’t know that.” I’d like to know exactly what context this phrase is used in, and whether it’s formal or informal (I’m guessing that it’s at least semi-formal, but I want to make sure to avoid misunderstanding in the future.) I would also like to know what the informal form of this phrase is.
by HappyFireChaos