彼の母親は彼が小さいときに亡くなったので、お祖母さんが彼を育てた。

Sentence Analyzer

母親 小さい ときに 亡くなった ので お祖母さん 育てた

English Translation

His mother died when he was young, and his grandmother brought him up.

Furigana

(かれ)母親(ははおや)(かれ)(ちい)さいときに()くなったので、お祖母(ばあ)さんが(かれ)(そだ)てた。

Romanji

Kare no hahaoya wa kare ga chiisai tokini nakunatta node, obāsan ga kare o sodateta.

Words

(かれ)
he; him; his; boyfriend
()
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
母親 (ははおや)
mother
()
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
()
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
小さい (ちいさい)
small; little; tiny
時に (ときに)
by the way; incidentally; sometimes; occasionally
亡くなる (なくなる)
to die
ので (ので、んで)
that being the case; because of ...; the reason is ....; given that...
お祖母さん (おばあさん)
grandmother; female senior-citizen
()
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.
育てる (そだてる)
to raise; to rear; to bring up; to train; to teach; to educate; to promote the growth of...; to nurture; to foster; to develop

Kanji

Readings: ヒ、 かれ、 かの、 か.の
Meanings: he, that, the
Readings: ボ、 はは、 も
Meaning: mother
Readings: シン、 おや、 おや-、 した.しい、 した.しむ
Meanings: parent, intimacy, relative, familiarity, dealer (cards)
Readings: ショウ、 ちい.さい、 こ-、 お-、 さ-
Meanings: little, small
Readings: ボウ、 モウ、 な.い、 な.き-、 ほろ.びる、 ほろ.ぶ、 ほろ.ぼす
Meanings: deceased, the late, dying, perish
Reading: 
Meanings: ancestor, pioneer, founder
Readings: イク、 そだ.つ、 そだ.ち、 そだ.てる、 はぐく.む
Meanings: bring up, grow up, raise, rear