Could you…? Requests

The most common polite request is a question in the aorist: Pencereyi açar mısınız? (Could you open the window?). A slightly more careful version uses -ebilir: Pencereyi açabilir misiniz? (Would you be able to open the window?). Add lütfen for extra politeness and use -sınız / -siniz with strangers.

The question particle shows which form you need:

• açar mısınız, durur musunuz, götürür müsünüz → aorist, the particle follows the last vowel
• açabilir misiniz, durabilir misiniz → -ebilir always takes mi

With verbs whose aorist ends in -ir or -er, such as verir / verebilir misin, both forms take mi, so both fit.