⇒ 你去超市时顺便帮我到邮局寄封信吧。 (Nǐ qù chāoshì shí shùnbiàn bāng wǒ dào yóujú jì fēng xìn ba.) Would you mind going to the post office to post this letter for me on your way tothe supermarket?
[说、问]by the way
⇒ 顺便问一下, 他给你回电话了吗？ (Shùnbiàn wèn yīxià, tā gěi nǐ huí diànhuà le ma?) By the way, did he call you back?