a Mr Smith的用法和样例：
- At the airport a Mr Smith was paged to board the plane.
- Mr Smith was a high-handed tyrant in his office.
- Mr Smith found the steaming jungle a living death.
- Mr Smith opened the ball with a report on last year's work.
- John Dennis was hat in hand to Mr Smith.
- Mr Smith told me to hold on to my oil shares.
a Mr Smith的相关资料：