Are both of the following sentences right?
1. I am superman.
2. I am a superman.
If they are both right, what's the difference?

Question

Answer

Hi there,
I am Superman. - should be with a capital letter, referring to Superman we know from movies. With this sentence you imagine you ARE in fact the same person as Superman. Maybe you put on a costume at Halloween and say this sentence:)
2. I am a superman. - It means that you compare your qualities to those of Superman and you can do things like he does. Maybe you say this sentence after you saved someone in a less serious situation.  
I hope this helps.

Answer

Yes both answers are correct.
1. I am Superman. - Meaning that you are literally Superman.
2. I am a Superman. - Meaning that you are like Superman but not 'The Superman'.

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