TO DESCRIBE A COMPLETE EVENT
FEEL, SEE, WATCH, NOTICE, HEAR + OBJECT + VSF
FEEL, SEE, WATCH, NOTICE, HEAR + OBJECT + V-ING
I heard people singing.
I heard someone say, "See you soon."
I saw my sister call a taxi and felt her take my arm and guide me to it.
I watched my friends leave the restaurant.
TO DESCRIBE AN EVENT IN PROGRESS OR THAT TAKES PLACE OVER A LONGER PERIOD OF TIME
I went in the room and saw all my friends standing around the piano.
