快速答案
比较巴西葡萄牙语中的 extemporaneo vs. intempestivo：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
extemporaneo
untimely or out of season
Use extemporaneo for something done or appearing outside the proper time.
intempestivo
untimely or inappropriate in timing
Use intempestivo for late, premature, or badly timed action, especially in legal and formal contexts.
如何选择
- extemporaneo: Choose extemporaneo if the sentence points to something done or appearing outside the proper time.
- intempestivo: Choose intempestivo if the sentence points to late, premature, or badly timed action, especially in legal and formal contexts.
例句
Foi uma proposta extemporanea.
It was an untimely proposal.
O recurso foi considerado intempestivo.
The appeal was considered untimely.
常见误区
In legal deadlines, intempestivo is the more expected term.
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 extemporaneo，一次用 intempestivo。如果两个版本都可以，说明意思怎样变化。