それが高1の時だから17年が経ちました。
Sentence Analyzer
English Translation
That was when I was in the first year at high school, so 17 years have passed since then.
Furigana
それが高 1の時 だから17年 が経 ちました。
Romanji
Sore ga kō 1 no toki da kara 17 nen ga tachimashita.
Words
其れ
(それ)
that (indicating an item or person near the listener, the action of the listener, or something on their mind); it; that time; then; there (indicating a place near the listener); you
が
(が)
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
高
(こう)
high school; high-
一
(いち)
one; best; first; foremost; beginning; start; bottom string (on a shamisen, etc.)
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
時
(とき)
time; hour; moment; occasion; case; chance; opportunity; season; the times; the age; the day; tense
だ
(だ)
be; is; indicates past or completed action; indicates light imperative
から
(から)
from (e.g. time, place, numerical quantity); since; from (originator); by; because; since; out of (constituent, part); through (e.g. window, vestibule); after; since
年
(とし)
year; many years; age; past one's prime; old age
経つ
(たつ)
to pass; to lapse