This is the film which I saw last night.

This is the film whose name is Titanic .

The man and the woman whom you see in the picture are Jack and Lucy .

Here are two pictures that are taken from the film .

Jack and Lucy are the hero and the heroine who loved each other very much in the film .

which指物，作宾语

that指物，作主语

whose指人，作定语

whom指人，作宾语

who指人，作主语