だれがその手紙を書いたかはまだなぞである。

Sentence Analyzer

だれ その 手紙 書いた まだ なぞ ある

English Translation

It is still a mystery who wrote the letter.

Furigana

だれがその手紙(てがみ)()いたかはまだなぞである。

Romanji

Dare ga sono tegami o kaita ka wa mada nazo de aru.

Words

(だれ、たれ、た)
who
()
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
其の (その)
that (something or someone distant from the speaker, close to the listener; actions of the listener, or ideas expressed or understood by the listener); the; um...; er...; uh...
手紙 (てがみ)
letter
()
indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
書く (かく)
to write; to compose; to pen; to draw; to paint
()
indicates a question (sometimes rhetorical); or; whether or not; some- (e.g. something, someone); indicates doubt, uncertainty, etc.; emphatic prefix; suffix forming adjectives or adverbs; in that way
()
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
未だ (まだ、いまだ)
as yet; hitherto; only; still; not yet (with negative verb); more; besides; unfinished; incomplete; not yet finished with
何ぞ (なんぞ、なにぞ、なぞ)
something; what; why; how
()
be; is; indicates past or completed action; indicates light imperative
(ある)
a certain ...; some ...

Kanji

Readings: シュ、 ズ、 て、 て-、 -て、 た-
Meaning: hand
Readings: シ、 かみ
Meaning: paper
Readings: ショ、 か.く、 -が.き、 -がき
Meaning: write