I'm from Portugal.
I'm Portuguese.
He is Mexican.
He is from Mexico.
I'm from France.
I'm French.
She is Australian.
She is from Australia.
He is American.
He is from The USA.
I'm from China.
I'm Chinese.
We are British.
We are from The UK.
They are Spanish.
They're from Spain.
She is from Canada.
She is Canadian.
He is from Turkey.
He is Turkish.
She is Japanese.
She is from Japan.
You are Chilean.
You are from Chile.