私は昨日一日中寝ていた。

私は昨日一日中寝ていた。

I was in bed all day long yesterday.

私(わたし)は昨日(きのう)一(いち)日中(にちちゅう)寝(ね)ていた。

Watashi wa kinō ichi nichichū neteita.

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

昨日 (きのう、さくじつ)

yesterday

一 (いち)

one; best; first; foremost; beginning; start; bottom string (on a shamisen, etc.)

日中 (にっちゅう、ひなか)

daytime; during the day; Sino-Japanese

寝る (ねる)

to lie down; to go to bed; to lie in bed; to sleep (lying down); to sleep (with someone, i.e. have intercourse); to lie idle

Readings: シ、わたくし、わたし

Meanings: private, I, me

Reading: サク

Meanings: yesterday, previous

Readings: ニチ、ジツ、ひ、 -び、 -か

Meanings: day, sun, Japan, counter for days

Readings: イチ、イツ、ひと-、ひと.つ

Meanings: one, one radical (no.1)

Readings: チュウ、なか、うち、あた.る

Meanings: in, inside, middle, mean, center

Readings: シン、ね.る、ね.かす、い.ぬ、みたまや、や.める

Meanings: lie down, sleep, rest, bed, remain unsold