Чтобы перевести данное предложение в косвенную речь на английский язык, можно использовать следующий вариант:
Sam said that he preferred films because they were more exciting. He explained that in a film you could get involved in all the action and actually feel like you were there. Besides, he mentioned that books could be boring, but films were cool, colorful, and wonderful. He added that you could just sit and enjoy them, and also watch a film with your family or friends, and then talk about it afterwards.
Если вам нужно что-то уточнить об использовании косвенной речи на английском, пожалуйста, дайте знать!