This is Dennis Smith.
　　This is Dennis Smith speaking.
　　Hello, John? *常用于熟人之间
　　Is this Mr. Dennis Smith?
　　Is this the finance department?
　　Is this Dr. Jim Baker's office?
　　Do you mind if I use your phone?
　　No, please go ahead. 不介意，请用吧
　　May I speak to Mr. Sato?
　　May I speak with Mr. Sato?
　　I'd like to speak to Mr. Sato, please.
　　Is Mr. Sato there, please?
　　Mr. Sato, please. *这是最简单的说法。
　　Is Mark there? 马克在吗? *熟人间用
　　I'm sorry for calling you this late.
　　I hope I'm not disturbing you. 打扰
　　I hope I'm not keeping you.
　　I hope I didn't wake you up.
　　It is urgent I talk to Mr. Barr now.
　　I need to get in contact with Mr. Barr right away.
　　I need to talk to Mr. Barr immediately.
　　I'm calling about tomorrow's meeting.
　　I'm returning your call.
　　I'm calling you back.