手早い答え
degradar は劣化させ、degredar は流刑に処します。
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
degradar
to degrade or deteriorate
Use degradar for lowering quality, dignity, rank, or environmental condition.
degredar
to exile or banish
Use degredar for condemning someone to forced residence away from their home.
選び方
- degradar: Choose degradar if the sentence points to lowering quality, dignity, rank, or environmental condition.
- degredar: Choose degredar if the sentence points to condemning someone to forced residence away from their home.
例文
O descarte irregular degradou o rio.
Illegal dumping degraded the river.
A antiga sentença mandava degredar o condenado.
The old sentence ordered the convict into exile.
よくある落とし穴
Degredar is mainly historical or legal-literary today. Degradar is the current verb for deterioration and humiliation.
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degradarで、もう一度はdegredar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。