Harry Potter is the name of a series of fantasy novels by British writer J.K. Rowling. Six of seven planned books have been published to date. The books depict（描写）a society of witches and wizards, the man character being a young wizard named Harry Potter. The first novel, Harry Potter and the Philosopher’s Stone（ retitled Harry Potter and the Sorcerer’s Stone in the United States） , was released in 1997. The first four books have been made into films, and the fifth book is due to start filming in February 2006.
1．How many books does the series of novel have ?
2．Is Harry Potter a witch or a wizard ?
3．What does “Philosopher”s stone” mean in Chinese ?
4．Who is the writer of Harry Potter ?
5．How many books have been made into films so far ?