私は事情があってお手伝いできませんでした。

Circumstances did not permit me to help you.

私(わたし)は事情(じじょう)があってお手伝(てつだ)いできませんでした。

Watashi wa jijō ga atte o tetsudaidekimasen deshita.

私 (わたし、わたくし)

I; me; private affairs; personal matter; secrecy; selfishness

は (は)

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

事情 (じじょう)

circumstances; consideration; conditions; situation; reasons; state of affairs

が (が)

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

有る (ある)

to be (usu. of inanimate objects); to exist; to live; to have; to be located; to be equipped with; to happen; to come about

御 (お、おん)

honorific/polite/humble prefix

手伝う (てつだう)

to help; to assist; to aid; to contribute to; to be a factor in

デス (デス)

death

Readings: シ、わたくし、わたし

Meanings: private, I, me

Readings: ジ、ズ、こと、つか.う、つか.える

Meanings: matter, thing, fact, business, reason, possibly

Readings: ジョウ、セイ、なさ.け

Meanings: feelings, emotion, passion, sympathy, circumstances, facts

Readings: シュ、ズ、て、て-、 -て、た-

Meaning: hand

Readings: デン、テン、つた.わる、つた.える、つた.う、つだ.う、 -づた.い、つて

Meanings: transmit, go along, walk along, follow, report, communicate, legend, tradition