I noticed that my mother had lost weight, underlining the worry that was inscribed on her face; Sharon's face echoed that emotion, and I knew I must speak with care.
Every textbook revolving around the subject of health made such statements, underlining the fact that one's teenage years were often the most difficult to bear.
The prince took up the pamphlet which he had been busy underlining with red and blue pencil.
The underlining of the last two words clearly asked me to substitute for them a proper name with which we were both well acquainted.