English vocabulary and translations (See all)
(He smiled) upon seeing (the baby): (He smiled) when he saw (the baby); (He smiled) when (the baby) came into view
Upon + verb in ING is an expression which indicates one action immediately preceding or producing another. The verb in ING is a 'gerund' in this expression, a verb acting as a noun.
- "I am also filled with terror upon discovering your new president, but that is a discussion for another time!"
- "Several people saw the troubling red color which appeared on my son's face upon eating his tuna steak, and I personally can confirm that he vomited no fewer than eighteen times when he returned home."
Do you have smart way of remembering 'Upondoingsomething'? Share it with us!