The Father And His Son
Father: You Know, tom, when Lincoln Was Your Age, he Was A Very Good Pupil. In Fact, he Was The Best Pupil In His Class.
Tom: Yes, father. I Know That. But When He Was Your Age, he Was President Of The United States.

Father and child
Father: Tom, you want to know, it is when Lincoln when your this age, he is a very good student. In fact, he is the best student in the class.
Tom: Yes, father, I know. Can be in when him you when this age, he already was American president.