Early in the morning Mr Smith is cutting the grass in his garden. Mr Green，his neighbor（邻居），sometime comes to help Mr Smith. Mr Smith is very happy to see Mr Green. He asks Mr Green, "Do you often help people to cut grass?" "No" says Mr Green. "So why do you come to help me?" "I come to help you cut the grass so that（为了）I can go back to have a good sleep. Your cutting machine（切草机）is making a big noise and I can't sleep."

一大早，史密斯先生在自家花园修剪草坪。这时他的邻居格林先生过来帮忙。史密斯先生非常高兴，他问：“你经常帮别人割草吗？”格林先生说“不”。史密斯又问：“那你为什么来帮我？”格林先生回答说：“我来帮你是为了我能回去睡个好觉，你的割草机实在是太吵了。”