Question 1 ~ますまい is grammatical, but it's already fairly uncommon. It's mainly heard in role languages for stereotypical samurai and pompous/noble elderly people. ~ですまい is ungrammatical, although ~ではありますまい is okay. Question 2 Basically if you used ある for a person, it would sound more or less archaic. ~くありましょう is grammatical, but it's fairly uncommon and ...


「ちょっとこれ1本でどうやって食べろっていうのよ」 :Why do you say "eat" to me by just one of this chopstick? (How can I eat it?) It is used as an antonym. Omitted「」on 食べろ may be making you confused.

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