grammaticality - Can I say "A Chinese" in English?
I can say "An American" or "A Frenchman", however, can I say "A Chinese" like that? Does it sound weird? Answer Yes, you can say "a Chinese" but yes, it sounds at least a little weird to many people most of the time. This is discussed in Why can we say 'an American' but not 'a British'? I'd recommend using the adjective "Chinese" instead it in situations where it is easy to do so, but the noun "Chinese" can be used when necessary. You can see this use listed in a number of dictionaries, such as Merriam-Webster and the American Heritage Dictionary which have as one definition of Chinese " a native or inhabitant of China". Here is an example I found from the book Sweet Bamboo: A Memoir of a Chinese American Family by Louise Leung Larson (accessed via Google Books): Being a reporter had not occurred to me; I did not think a Chinese, and especially a woman (women reporters were rare in those d...