Mr.  Smith never watched TV.  He thought that people spent too much time watching it.  Some of his friends often talked about sports shows,  the movies and plays. Mr. Smith said to himself,  “They never read any books or go out in the evening. ” So he didn’t buy a TV.
Two years ago,  Mr. Smith was 60 years old.  He stopped working in the hospital.  His son bought him a TV.  He began to watch all the news.  He knows much more about the world now.  And he reads more books,  too.
   Now,  Mr. Smith will get very unhappy if you trouble(打扰) him when he is watching TV.  I can’t know that one can change(改变) his idea when he is 60.