1. see sb do sth 看见某人做过某事,
I often see him draw a picture.
2. see sb doing sth 看见某人正在做某事.
When I pass the window I see him drawing a picture.
3. be seen to do ,用于被动语态还原to
He is seen to draw a picture.
He was seen to come out.
We saw her chatting with her neighbors.
I looked for Mike but couldn't see him in the crowd.
They have seen hard times.
I see what you mean.
We see him as an authority on the subject.
Go and see if the car leaks oil.
See that the lights are turned off before you leave the office.
He saw me to the door and said goodbye.
Last year saw a slight increase in car accidents in that city.
Can you see without your glasses?
I don't see at all.
Let me see.