could, might
Pensei que tu poderias ajudar-me.
I thought you could help me.
Could you give me an example?
Could you wait a moment?
Poderias me dizer quem fez isso?
Could you tell me who did this?
What else could you do?
Poderias ter-me transformado em ouro e me usado em teu proveito.
You could have turned me into gold and used me to your advantage.
— Henrique V (1989)
Poderias repetir isso mais lentamente?
Could you repeat that more slowly?