Can 是情态动词,所有的情态动词后都加动词原型没有数和格的变化,may,would ,will,shall等也是如此
Can you give me an example of what you mean?
你能给我举个实例来解释你的意思吗?
Could you go back to the beginning of the story?
你能不能回到故事的开头?
Can you give me more background on the company?
你能多提供一些这家公司的背景资料吗?