たぶん彼はそのことを忘れたのだろう。
Sentence Analyzer
English Translation
It is probable that he forgot about it.
Furigana
たぶん彼 はそのことを忘 れたのだろう。
Romanji
Tabun kare wa sono koto o wasureta no darou.
Words
多分
(たぶん)
perhaps; probably; generous; many; much; great
彼
(かれ)
he; him; his; boyfriend
は
(は)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
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...
事
(こと、こん)
thing; matter; incident; occurrence; event; something serious; trouble; crisis; circumstances; situation; state of affairs; work; business; affair; after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to; nominalizing suffix; pretending to ...; playing make-believe ...; alias; aka; nickname; alternative name; also known as
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.
忘れる
(わすれる)
to forget; to leave carelessly; to be forgetful of; to forget about; to forget (an article)
の
(の)
indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question
だ
(だ)
be; is; indicates past or completed action; indicates light imperative