誰がこの手紙を書いたかは明らかでない。

Sentence Analyzer

誰がこの手紙を書いたかは明らかでない。

English Translation

It is not clear who wrote this letter.

Furigana

誰(だれ)がこの手紙(てがみ)を書(か)いたかは明(あき)らかでない。

Romanji

Dare ga kono tegami o kaita ka wa akiraka denai.

Words

誰 (だれ、たれ、た)

who

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

此の (この)

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

手紙 (てがみ)

letter

を (を)

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

か (か)

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

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

明らか (あきらか)

obvious; evident; clear; plain

だ (だ)

be; is; indicates past or completed action; indicates light imperative