03課 〜と比べて・〜がいちばん 教科書 p.22
Compare / superlative
接続：V辞書形・Vない／N + に限る
… is the best. Confirm the best choice based on experience or gut feeling.
注意 / Note：Check the subject, tense and tone of both clauses; Avoid translating word for word from Vietnamese.
比較 / Compare：Compare with similar samples in the same article to choose according to nuance and connection. Same 課: 〜くらいだ／〜ほどだ／〜くらい〜はない／〜くらいなら／〜ぐらいなら — these models are often mistaken for each other, read the 接続 line carefully and then decide.
疲れた日は早く寝るに限ります。
On a tired day, it's best to sleep early.
夏は冷たいビールに限る。
In the summer, cold beer is best.
旅行は電車に限ります。
Traveling by train is best.