A
Mike walks into a pet shop and sees a little white dog. He asks the shopkeeper（店主）, “Does your dog bite?”
The shopkeeper says, “No, my dog doesn’t bite.”
“What a nice dog！” Mike says to himself. Then he bends down and tries to touch（接触，碰）the dog. The dog bites（咬）him.
“Ouch!” he cries. “You said your dog did not bite!” The shopkeeper answers, “That is not my dog.”
狗为什么会咬 Mike 呢？

因为那条狗不是店主的狗。

B
John lives on a small farm. He cannot speak well. He stammers（口吃）a lot when he speaks.
One day he goes to a shop. He wants to buy a parrot（鹦鹉）. He says to the shopkeeper, “D-d-do you have a p-p-parrot?”
“Yes, sir,” answers the shopkeeper. “Here is a fine green one. It understands（理解，明白）everything.”
So John buys it and goes home with his bird. But some days later he takes it back to the shop.
“This b-b-bird can’t t-t-talk,” he says. “It can only st-t-tammer.”
商店的店主说谎了吗？

没有说谎，鹦鹉在学John的口吃。