I am American?
So I got 2 apps to help me learn Japanese, and they say minorly contradicting things. LingoDeer says "watashi wa amerika jin desu" while Duolingo says just "amerika jin desu." What is the truth???
Both these sentences are correct. "watashi wa amerika jin desu" is important to learn it like this at beginning stages to understand well the grammar and how it works. But "amerika jin desu." sounds natural and this is what you want to use when you talk to Japanese people to not sound foreign, but the natural way of saying things come with time when you begin to understand Japanese better.
I am Japanese. We normally start a sentence with the most important thing. わたしは あめりかが すきです(Q:Which country do YOU like?) あめりかは わたしの すきな くにです(Q:How about AMERICA?) すきな くには あめりかです(Q:Tell me your FAVORITE COUNTRY) In case of "I am American.", if you are talking with one person, you can say あめりかじんです. But if there are other people, like a group discussion, you need to start from わたしは. I'm sorry, my English is not so good.