核心问题
Edison discovered the light bulb. 爱迪生发明了电灯泡。
上面的英语句子对吗？
词典解答
上面的 discovered 应改为 invented。为什么呢？因为 discover 是指发现本来就存在，但尚未被人所知的事物、地方、思想。如：
Columbus discovered the New World. 哥伦布发现了新大陆。
而 invent 则是指创造出世界上不存在的事物：
Who invented the microscope? 谁发明了显微镜?
“电灯泡”“显微镜”在被发明之前是不存在的。
练习题
请做下面的英语试题：
Electricity ____ by Edison, but he ____ the electric light. A. discovered; invented B. was not invented; was invented C. was not discovered; invented D. was not invented; discovered