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？