[![enter image description
here](https://i.stack.imgur.com/fR2pR.jpg)](https://i.stack.imgur.com/fR2pR.jpg)

I saw this in my Genki I book and I don’t quite understand how to use でもあります.
Also, how would I say this informally? パットはアメリカ人でもある？
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2019-07-20T00:03:14.150
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2019-07-20T00:03:14.150
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question
grammar meaning words particles verbs
Explanation of でもあります？