Lesson 35: More questions with っけ/け, かい, じゃない, and じゃん
っけ/け is used to ask positive "confirmation" questions, as well as questions about something the speaker forgot about.
なんだっけ？ "What was it again?"
どこに置いたっけ "Oh, where'd I put it?"
っけ/け is almost never used with non-nouns except in the past tense. When it is, other stuff is usually put in between.
来るんだっけ
In kansai and some other dialects け is a rough-sounding alternative か.
かい is a "friendly" question marker, especially for masculine speakers. Outside of familiar conversation, it's usually rude. It's か + い, and this い can show up attached to other stuff as well, like だ.
お元気かい？ You doin' well?
じゃない is used to ask confirmation questions. Yes, when attached to nouns, it's identical to normal "is not". No, there's no way around it.
いいじゃない It's fine, isn't it?
じゃん is a contraction of じゃない, but only used for confirmation questions.