时间：02-23 来源：转载自澎湃新闻 浏览量：5890
Something whooshed suddenly out of the end of his wand; it looked like a wisp of silvery gas.
"So..." Professor Lupin had taken out his own wand, and indicated that Harry should do the same. "The spell I am going to try and teach you is highly advanced magic, Harry -- well beyond ordinary Wizarding Level. It is called the Patronus Charm."
Harry looked curiously at the goblet. Lupin smiled.
"He did indeed. Black was tired of his double-agent role, he was ready to declare his support openly for You-Know-Who, and he seems to have planned this for the moment of the Potters' death. But, as we all know, You-Know-Who met his downfall in little Harry Potter. Powers gone, horribly weakened, he fled. And this left Black in a very nasty position indeed. His master had fallen at the very moment when he, Black, had shown his true colors as a traitor. He had no choice but to run for it --"
"Filthy, stinkin' turncoat!" Hagrid said, so loudly that half the bar went quiet.
"He bit Goyle for us once!" Ron said miserably. "Remember, Harry?"
"What about the Astronomy tower? Professor Trelawney's room? The Owlery?"
Quickly and silently, Harry dodged out from his hiding place and climbed the stairs; looking back, he saw an enormous backside and shiny bald head, buried in a box. Harry reached the door at the top of the stairs, slipped through it, and found himself behind the counter of Honeydukes -- he ducked, crept sideways, and then straightened up.
"How does it work?" said Harry nervously.
Crabbe and Goyle sniggered.
"What d'you think Harry's going to do with it -- sweep the floor?" said Ron.
"Detention, Weasley," Snape said silkily, his face very close to Ron's. "And if I ever hear you criticize the way I teach a class again, you will be very sorry indeed."
"Oh, shut up," said Ron as he and Harry drew level with Neville.
"She doesn't know," said Ron, staring resentfully after Hermione. "She's just trying to get us to talk to her again."
Then, quite suddenly, as though following orders, he rolled up the map, stuffed it inside his robes, and hurried to the door of the classroom. He opened it a couple of inches. There was no one outside. Very carefully, he edged out of the room and behind the statue of the one-eyed witch.