1、请给某人/某单位打电话
Would/could/can you ring up...？请你...打电话好吧？
句中ring up意思是“给某人打电话”，除了用ring up外，还可用call, call up, telephone 等，意思相同 can you...？用得最普通：could/would you...？用在正式场合，比较礼貌。
2、电话拨不通时常说：
The line is busy , I can‘t get through.电话占线，我打不通。
/ I’ll try again later.我过一会儿再打.
其中line指电话线路，get through 指接通电话。
3、电话拨通后相互打招呼：
Hello，（name or telephone number）你好，（并通报本人的姓名或单位名称或电话号码）Hello，is That...speaking？你是...吗？ / Who is that speaking/calling？你是谁？/ Who is speaking/calling, please？你是谁？
应答时常说：Yes,（this is）...speaking. 是的，我是..../ Yes, it‘s...here. 我是....
4、打电话请对方找人或留言：
Is...in/at home？ 某某在家吗？/ can/may/could I speak to..., please？请...接电话好吗？/ Will/would you give a message to..., please？请给...捎个口信好吗？ / Would you tell him my telephone number, please？ 请你把我的电话号码告诉他好吗？/ Can/could you ask...to ring me back, please？请叫...给我回个电话好吗？