Part 1：文本欣赏
Percy Buttons
I have just moved to a house in Bridge Street. Yesterday a beggar knocked at my door. He asked me for a meal and a glass of beer. In return for this, the beggar stood on his head and sang songs. I gave him a meal. He ate the food and drank the beer. Then he put a piece of cheese in his pocket and went away.Later a neighbor told me about him. Everybody knows him. His name is Percy Buttons. He calls at every house in the street once a month and always asks for a meal and a glass of beer.
Part 2：文本解析
一）词汇学习 Word study
1．knock
（1）vi. 敲门：
Someone is knocking at the door.
有人在敲门。
I knocked, but no one answered.
我敲了敲门，但是没人答应。
（2）vt., vi. 碰撞：
You always knock things off the table. 你总是碰掉桌上的东西。
Jim was knocked over by a bus this morning.
今天上午吉姆被一辆公共汽车撞倒了。
She has knocked a cup over again.
她又碰倒了一个杯子。
（3）vt. 把（某人）打成……状态：
Bob is very strong.He knocked Tom out yesterday.
鲍勃很强壮，他昨天把汤姆打昏过去了。
（4）与off连用时有一些特殊的含义。一般用于口语。
A vt.（价格上）减去，除去，打折扣：
They knocked five dollars off the price of the coat.
他们把这件上衣的价格降低了5美元。
B vi. 下班，停止，中断（工作等）：
When do you usually knock off?
你一般什么时候下班？
He knocked off for lunch at half past eleven.
他11点半休息吃中午饭。
