例句：

　　Please, sir, can I open a window?

　　老師，請允許我打開一扇窗戶好嗎？

　　Please could I leave early today?

　　請問，我今天早走一會兒行嗎？

　　What's your account number please?

　　請問你的賬戶號碼？

　　Please could you speak more slowly?

　　請您說慢一點好不好？