手早い答え
esperto は機転が利く・注意深い、experto は専門家ですがブラジルでは especialista や perito が一般的です。
確実な見分け方は、英語から訳す前に、その単語の働きを見きわめることです。
それぞれの単語の働き
esperto
clever, alert, or quick
Use esperto for mental agility, attentiveness, or practical shrewdness.
experto
expert
Use experto for a specialist with deep technical knowledge or skill.
選び方
- esperto: Choose esperto if the sentence points to mental agility, attentiveness, or practical shrewdness.
- experto: Choose experto if the sentence points to a specialist with deep technical knowledge or skill.
例文
A aluna é esperta e aprende rápido.
The student is bright and learns quickly.
O tribunal ouviu um experto em segurança digital.
The court heard a digital security expert.
よくある落とし穴
In Brazil, especialista and perito are often more natural than the less frequent experto, but experto never simply means clever.
文脈の中で練習する
自分の実生活から文を一つ選び、二回書いてみましょう。一度はespertoで、もう一度はexpertoで。どちらも成り立ちそうなら、意味の違いを言葉にしてみましょう。