"This person is not him."
Translation:Этот человек не он.
I think it's because so far we have used это to say "this IS" something or other. Now we are saying "this THING" so you have to match это with the gender of the noun.
этот - masculine эта - feminine это - neuter эти - plural
это is used as a general "this," when you don't know the gender of the noun, like "Is this a house?" or, as ic1male mentioned, for neuter nouns. этот is used next to a noun as in "this book," "this person."
I thought word order did not matter as much in Russian as in English? Why doesn't this work? он не етот человек
Difference in nuance, I suppose. "He is not this person" is not quite the same thing as "This person is not him", neither in English nor Russian.
To a certain extent, word order does not matter, but you can't just throw the words in any order.
In simple subject + predicate sentences in the present tense where the predicate is a noun or adjective, Russian uses the nominative case for both ("он" in the case of "he/him"). The English pronoun "him" as an object (grammatically speaking) translates various ways in Russian, depending on case.
This makes sense, thanks! My only confusion now is why, when you hover over 'him' in the sentence, the suggested words list includes него (which is what I tried, but was deemed incorrect) but not он.
Not 100% sure as I've given up with Russian now - it was just too hard. :D But I think не is not and нет is no. No, I am not gay = Нет, я не гей.
Не =not; Het = no. Unlike English, double negatives reinforce what is not present. So, the two are often used together.
Duo told me it was "него" not "он". Can someone tell me why the former is incorrect?
This is poorly phrased and inaccurately translated. Calling it "nuanced" (as other posters have) is a BS catch-all answer people on Duolingo use when they really have no idea whatsoever what they are saying. The simplest thing is to delete the entry.
There are not two subjects: there is the subject and the complement. And, Russian and in formal English, both subject and complement take the nominative.