先生用英文怎么表达？?

　　"Dear Sir," she began.

　　“尊敬的先生”，她开始写到。

　　"A pleasure to meet you, sir," he said.

　　“很荣幸见到您，先生，”他说。

　　Could I interest you in this model, Sir?

　　先生，请你瞧瞧这个型号好吗？

　　"We shall, sir," said Thorne, with conviction.

　　索恩坚定地说：“先生，我们会的”。

　　Could you sign the hotel register please, sir?

　　先生，请在酒店登记簿上签字好吗？