核心问题
lightning, lightening 与 lighting 是不是一个词的三种拼写法?
词典解答
这是三个不同的词。lightning(不带e)是名词“闪电”的意思，如lightning rod(conductor)(避雷针), lightning speed(闪电般的速度), lightning decision(闪电般的决定), lightning visit(闪电般的访问), lightning strike(闪电式罢工)。
lightening(带 e)则是动词 lighten(照亮;变亮)的现在分词和动名词:
The driver was lightening the road. 司机照亮了公路。
lighting 是个名词,它的意思是“点燃”“照明”:
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Every home now has electric lighting. 现在每个家庭都有电照明。
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The only lighting comes through a small window. 唯一的灯光通过小窗子射了出来。请做下面的英语试题：
There were many flashes of ____ during the storm last night and I was worried that some one might get hurt.
A. lighting B. lightening C. firing D. lightning