Na'vi/Questions

Naʼvi, like English, has two ways of asking questions: "yes-no" questions for simple affirmation or denial, as in "Are you going?", and asking for elaboration, such as "Where are you going?". There are also numerous series of words that answer wh- questions: "Here", "There", "Nowhere", "Everywhere", "Elsewhere", "The same place", etc.
Yes-no questions.
Yes-no questions may be asked with the "srake?, srak?", though sometimes alone is used. 
or, when repeating a question to oneself after being asked,
Such questions may be answered simply "srane" "yes" or "kehe" "no".
"Srake" is not equivalent to English question tags like "isn't that right?", which aim to elicit agreement more than information. The Naʼvi question tags are "ke fìfya srak?" "(is it) not this way?", "kefya srak?" "isn't it?", or "kefyák?" for short.
Yes-no questions can also be worded with the verb "ftxey" "choose", here functioning as a "whether", with "fuke" "or not". Thus instead of "srake nga zaʼu?" "Are you coming/will you come?", one may ask, 
Wh-questions.
Information questions are asked with question words based on the leniting interrogative morpheme "pe+, -pe" "which?". These need not occur at the beginning of a clause: 
to which an actual explanation is expected (unless the question is rhetorical). 
"Pe-"words such as "pelun / lumpe" are only used for questions, not as s as in "I don't know why it was me". (For that, see the .) "Pe+, -pe" may be used with any noun, but it generally occurs with one of half a dozen common generic nouns, such as "tute" "person" for "pesu / tupe" "who?" and "ʼu" "thing" for "peu / ʼupe" "what?". Many of these nouns act also as adverbs, and the resulting question words are adverbial, as in 
based on "kem" "deed", or 
based on "lìʼu" "word".
Answer words.
Paralleling the "pe+" and "-pe" question words, and potentially answering them, are words based on "pre-nouns". Theses are morphemes that have concrete independent meaning, like "this" or "that", but which are found prefixed to nouns, such as the s "fì-" "this" and "tsa-" "that": 
Other prenouns are "kaw-" "no" ("not one"), "fra-" "every", "fne-" "kind", "la-" "other", and "teng-" "same". There is also a suffix "-o" "some" that combines with many of these same answer words. 
Not all combinations are attested. 
"Po" might be the third-person animate pronoun "po," and thus contrast with "tu" for people only. 
The table merely shows the more common forms; "fì-" (and its plural "fìay-" "these", commonly shortened to "fay-") and "tsa-," along with its plural "tsay-," may combine as a prefix to any noun: "fayvrrtep" "these demons", "tsayhetuwong" "those aliens". ("Tsaʼu," however, is pluralized as other pronouns, "aysaʼu" or "saʼu.") "Pe" combines with other nouns as well, either as a prefix or a suffix. As usual for affixes, they are unstressed, and they do not need the attributive "a": compare "fayvrrtep" with "kea txep / txep ake" "no fire" and "ke txep" "not a fire". 
Nouns combined with pre-nouns still behave as nouns, for example with case: "fìlìʼuä ral" "the meaning of this word". 
An exception to the stress pattern is "Fìtrr lu trrpeve?" "Which day (of the week, etc.) is it today?", where a suffix "-pe" is stressed before the ordinal suffix "-ve."
The such/kind series based on "fnel" governs the genitive of a noun: "tsafnel syulangä" "such a flower, that kind of flower". Such phrases may be reduced, with the prenoun+"fnel" becoming a compound prenoun: "pefnesyulang?" "which (type of) flower?" – "fìfnesyulang, tsafnesyulang" "such a flower"; plural "fayfnesyulang, tsayfnesyulang".