彼は手紙を書いてしまっているだろう。
Sentence Analyzer
English Translation
He will have written a letter.
Furigana
Romanji
Kare wa tegami o kaiteshimatteiru darou.
Words
彼
(かれ)
he; him; his; boyfriend
は
(は)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
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
だ
(だ)
be; is; indicates past or completed action; indicates light imperative