动词短语后作宾语补语的不定式不带to,但改成被动时必须带to,以此造句,

I often watch him go for a walk after supper .he is often watched to go for a walk after supper by me I see the dog stand in front of the house the dog is seen to stand in front of the house by meI look at this picturethe picture is looked at by me I listen to the teacher the teacher is listened to by me I often hear the noise at nightthe noise is often heard at night by me It makes me have to go to the hospital I am made to have to go to the hospital by it I feel him have something bad he is felt to have someting bad by me I notice him play computer gameshe is noticed to play computer games by me

I made him open the door.He was made to open the door by me.