妹は３歳年下で弟は４歳年下です。
Sentence Analyzer
English Translation
My sister is three years younger than I and my brother is four years younger.
Furigana
Romanji
Imōto wa san sai toshishita de otōto wa yon sai toshishita desu.
Words
妹
(いもうと)
younger sister
は
(は)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
三
(さん、み)
three; tri-
歳
(さい)
-years-old; ability; gift; talent; aptitude; genius
年下
(としした)
younger; junior
で
(で、にて)
indicates location of action; at; in; indicates time of action; indicates means of action; cause of effect; by; and then; so; indicates continuing action; indicates certainty, emphasis, etc.
弟
(おとうと、おと、おとと、てい)
younger brother; little brother; kid brother; pupil; apprentice
四
(し、よん、よ)
four
です
(です)
be; is
Kanji
Readings: マイ、 いもうと
Meaning: younger sister
Readings: サイ、 セイ、 とし、 とせ、 よわい
Meanings: year-end, age, occasion, opportunity
Readings: ネン、 とし
Meanings: year, counter for years
Readings: カ、 ゲ、 した、 しも、 もと、 さ.げる、 さ.がる、 くだ.る、 くだ.り、 くだ.す、 -くだ.す、 くだ.さる、 お.ろす、 お.りる
Meanings: below, down, descend, give, low, inferior
Readings: テイ、 ダイ、 デ、 おとうと
Meanings: younger brother, faithful service to elders