質問: And there are examples:(新完全マスター文法N3より) 1.医者にお酒を止められているが、ちょっと(。。。)いいだろう。 1. だけでは 2. だけでも 3. ぐらいなら 4. などなら 2.一度会った(。。。)どんな人物かわからない。 1. ほどなら 2. ことでも 3. だけでも 4. だけでは どうしてその答えを選ぶのかも説明してくれませんか?
回答: I'll try my best to answer. 1. だけでは is just begging to be completed with ...ない. So it doesn't quite fit there. The も in だけでも is acting similarly to how さえ in the grammar pattern Xさえ...eば functions. So the も behaves somewhat like "is enough for." For instance "Just thinking about that is enough to make me feel embarrassed" それを思い出すだけでも恥ずかしい or even better, "just doing my normal school commute is enough to make me tired" 通学するだけでも疲れる。 I'd say it doesn't fit here because it's a bit strange in the same way that it's strange to say "a little is enough for being good." I don't even know what would have to possess someone to choose などなら. 2. Remember how I said that だけでは screams for ない? I would choose it based on that. Not sure how to disprove the other options (other than だけでも, where the same reasoning from the first question applies).