手早い答え
isto・isso・aquilo は名詞を伴わず、それぞれ「ここ」「聞き手の近く」「さらに遠く」を指します。
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
isto
this thing or idea
Use isto for an unidentified thing near the speaker or an idea being introduced.
isso
that thing or idea
Use isso for an unidentified thing near the listener or something already said.
aquilo
that thing over there
Use aquilo for an unidentified thing far from both people.
選び方
- isto: Choose isto if the sentence points to an unidentified thing near the speaker or an idea being introduced.
- isso: Choose isso if the sentence points to an unidentified thing near the listener or something already said.
- aquilo: Choose aquilo if the sentence points to an unidentified thing far from both people.
例文
O que é isto?
What is this?
Isso é verdade.
That is true.
Aquilo é uma igreja.
That over there is a church.
よくある落とし穴
These forms do not change for gender or number. Before a named noun, use este, esse, or aquele instead.
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istoで、もう一度はisso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。