大学英语作文：Where do dreams come from?想知道梦的成因吗?

　　Most people often dream at night. When they wake in the morning they say to themselves, "What a strange dream I had! I wonder what made me dream that." Sometimes dreams are frightening.Sometimes, in dreams, wishes come true.At other times we are troubled by strange dreams in which the world seems to have been turned upside-down1and nothing makes sense.

　　大多数人夜晚经常做梦，早上醒来便自语：“做了个好奇怪的梦!不知道怎么会梦见这个。”有时候梦令人毛骨悚然，有时候梦却使愿望成真，还有的时候怪梦会来打扰我们，梦里的世界好像乱七八糟，不知所云。