
Originally Posted by
cc_editor
1. As he flies out of the window, Matt looks at Shock with disgust on his face. This is rather like a stage direction or caption to a photograph.
2. As he is flying out of the window, Matt is looking at Shock with disgust on his face. Also possibly a caption.
3. As he flies out of the window, Matt is looking at Shock with disgust on his face.This suggests that the looking has a longer duration than the flight.
4. As he is flying out of the window, Matt looks at Shock with disgust on his face. Probably the one you would expect in normal circumstances, with no other context.