手早い答え
dia は一日という期間、data はカレンダー上の日付です。
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
dia
day
Use dia for a day as a period of time or an experience.
data
calendar date
Use data for the numbered day, month, and often year assigned to an event.
選び方
- dia: Choose dia if the sentence points to a day as a period of time or an experience.
- data: Choose data if the sentence points to the numbered day, month, and often year assigned to an event.
例文
Hoje foi um dia longo.
Today was a long day.
Qual é a data da reunião?
What is the date of the meeting?
よくある落とし穴
Data is not the ordinary word for a romantic date. Depending on the situation, use encontro or sair com alguém.
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diaで、もう一度はdata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。