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·US Box Office Sales： $2，388，775，529

·Book Sales （worldwide）： $7，743，000，000

·DVD Sales （worldwide）： $1，878，000，000

·Total Pages （US Books）： 4，100 ·Total Pages （UK Books）： 3，405

·Longest Book： Harry Potter and the Order of the Phoenix

·Number of Languages the Harry Potter Books Are Translated Into： 67

·Numbers of Actors Who Played Voldemort1） in the Harry Potter Movies： 6

Did you know？

1 Both Harry&apos；s and J. K. Rowling&apos；s birthdays are on July 31.

2 The actress who played Moaning Myrtle2） was 37 years old at the time Harry Potter and the Chamber of Secrets was filmed. She is the oldest actress to ever portray a Hogwarts student.

3 Rowling&apos；s publisher suggested she use initials rather than her real name， "Joanne Rowling"， in order to appeal to male readers. She chose J. K. borrowing the "K" from her grandmother&apos；s name， Kathleen.

4 Only Alan Rickman， the actor who played Professor Snape， knew his character&apos；s fate before the release of Harry Potter and the Deathly Hallows， because Rowling told him.

5 Contrary to popular belief， the "t" at the end of Voldemort is silent. The name comes from the French words meaning "fight of death".

6 J. K. Rowling is the first person to become a billionaire （US dollars） by writing books.

7 When Harry Potter and the Prisoner of Azkaban was released in Great Britain， the publisher asked stores not to sell the book until schools were closed for the day to prevent truancy3）.

8 The least successful Harry Potter film， Harry Potter and the Prisoner of Azkaban， made $90 million more than the most successful Twilight movie.

9 Numbers are symbolic in the series， especially 2， 3， 4， and 7. For example， the trio of Harry， Ron and Hermione suggest the power of three and the spiritual trinity4）. Harry fatally wounds the basilisk5） on its third strike， and Hagrid knocks on the front door of Hogwarts three times. Students attend Hogwarts for seven years and there are seven players on each Quidditch6） team.

10 Rowling said her favorite beast in the series is the phoenix， a mythical sacred bird who ignites into flames when it reaches 500 or 1，000 years old only to emerge from the flames as a new and young phoenix.

1. Voldemort： 伏地魔，《哈利·波特》系列小說中的大反派，有著“史上最危險的黑巫師”之稱，一般人不敢直呼其名。

2. Moaning Myrtle： 桃金娘，是一個經(jīng)常出現(xiàn)在霍格沃茨城堡二樓女生盥洗室的幽靈。

3. truancy [?tru??nsi] n. 逃學(xué)，曠課

4. trinity [?tr?n?ti] n. 三人一組；三合一

5. basilisk： 蛇怪，類蛇形魔法生物，身體翠綠。

6. Quidditch： 魁地奇，是魔法世界中由巫師們騎著飛天掃帚參加的球類比賽。