Note: This thread is meant to be beginner friendly. If you are an advanced learner, please be kind by using easy bunpo and putting furigana on the LV6+ kanji by using the following html! ありがとう
Are we using が because the subject is still 正しい こたえ? ど の, does this mean which?
答(こた)え も Why the use of も?
In English, it seems I would say “Answer is mistake”, noun is noun.
In Japanese, it seems they say “Answer is to-be-a-mistake”, noun is て-form verb.
Is that a good generalization? Should I be looking for more Intransitive verbs that fit the situation and put them in て-form instead of looking for nouns?
Using は is grammatically correct, but it sounds like you’re generally stating the fact and about to start explanation. If you want to pick one among multiple choices, you’d usually add が to emphasizes on the answer. To make it more naturally, we’d say 二番の答えが正しいと思います。Hope it makes sense.
In Japanese, you can say “This answer is mistake.” この解答は誤りです。Yet, it sounds very かたい and it’s something you’ll find in a textbook. I can’t think of any other examples, but when you want to casually say something is wrong or incorrect, you need to take the て form: まちがっている (or まちがっていた in past tense). Just as a note, this い can be omitted in conversations, so some people just say まちがってる or まちがってた.