能否

wǒ men néng fǒu huí dào zhèng tí shàng lai ne

我们能否回到正题上来呢。

If we could just get back to the lecture.

nǐ néng fǒu gào su wǒ fù jìn nǎ r kě yǐ huàn qián ma

你能否告诉我附近哪儿可以换钱吗？

Could you tell me some place nearby where I could change money?