快速答案
比较巴西葡萄牙语中的 causa vs. motivo vs. razao：何时使用每个词，以及要避免的常见错误。
可靠的方法是先判断这个词在句子里的功能，再翻译。
每个词的作用
causa
cause
Use causa for the factor that produces an effect or result.
motivo
motive or reason
Use motivo for the reason someone acts or the explanation for something.
razao
reason
Use razao for logic, justification, or a reason in argument.
如何选择
- causa: Choose causa if the sentence points to the factor that produces an effect or result.
- motivo: Choose motivo if the sentence points to the reason someone acts or the explanation for something.
- razao: Choose razao if the sentence points to logic, justification, or a reason in argument.
例句
A causa do atraso foi a chuva.
The cause of the delay was the rain.
Qual foi o motivo da decisao?
What was the reason for the decision?
Voce tem razao.
You are right.
常见误区
Razao can also mean being right, as in voce tem razao.
放到语境中练习
从你的真实生活中选一个句子，写两遍：一次用 causa，一次用 motivo。如果两个版本都可以，说明意思怎样变化。