当你在留学期间打电话时，以下是一些常用的口语表达：
自我介绍
"Hello, this is [Your Name]." [您好，我是XXX]
"Good morning/afternoon, may I speak with [Name]？" [早上好/下午好，我可以和XXX说话吗？]
阐述来意
"I'm calling to discuss [reason for the call]." [我打电话来是想讨论一下……]
"I wanted to talk to you about [the purpose of the call]." [我想和你谈谈（打电话的目的）]
询问对方是否有时间
"Is this a good time to talk？" [现在是个方便交谈的时间吗？]
"Do you have a moment to chat？" [你有时间聊一下吗？]
"Are you available right now？" [你现在有空吗？]
"Can I talk to you for a few minutes？" [我可以和你聊几分钟吗？]
转接请求
"Could you please connect me to [Name/Department]？" [你能帮我转接到（姓名/部门）吗？]
接电话时的礼貌用语
"Hello？" [喂？]
"Yes, this is [Your Name]." [是的，我是XXX]
"I'm sorry, but [Name] is not available right now. Can I take a message？" [对不起，XXX现在不在。我可以帮您留话吗？]
留话
"Could you ask him to call me at [Your Contact Information]？" [你能告诉他给我打电话到[你的联系方式]吗？]
"I'll be out of the office for the rest of the day. Can I call you back later？" [我今天剩下的时间都不在办公室。我可以稍后给你回电话吗？]
结束通话
"Thank you for your time. Have a great day!" [谢谢你的时间，祝你今天愉快!]
"Goodbye!" [再见!]
这些表达可以帮助你在留学期间更自信、礼貌地进行电话沟通。