This is Dennis Smith. *打电话时常用This is...代替My name is...。
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? *这句话直译是“如果我用一下您的电话，您介意吗?”。如果同意，回答是No(不介意)。
Do you mind if I use your phone? (我能借用一下您的电话吗?)
No, please go ahead. (可以，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。并不失礼，工作和日常生活中都可以用。
Let me talk to Mr. Sato, please. *这样说有点太直，除了对熟人以外一般不用。
Is Mark there? *孩子们之间、朋友之间和比较熟悉的人之间比较随便的说法，工作中最好不用。
I'm sorry for calling you this late. *若在早晨的话把late换成early。
I hope I'm not disturbing you. *disturb“打扰(休息和工作)”。
I hope I'm not keeping you.
I hope I didn't wake you up.
I hope I didn't wake you up. (但愿没吵醒您。)
No, you didn't. (没有，你没吵醒我。)
It is urgent I talk to Mr. Barr now.
I need to get in contact with Mr. Barr right away. *get in contact with...“和……取得联系”。
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.