クラスの男の子の数は３０人です。
Sentence Analyzer
English Translation
The number of boys in our class is thirty.
Furigana
クラスの男 の子 の数 は３０人 です。
Romanji
Kurasu no otokonoko no kazu wa san zero nin desu.
Words
クラス
(クラス)
class
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
男の子
(おとこのこ、おとこのコ)
boy; male child; baby boy
は
(は)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
三
(さん、み)
three; tri-
○
(まる)
circle (sometimes used for zero); 'correct' (when marking); symbol used as a placeholder (either because a number of other words could be used in that position, or because of censorship); period; full stop; maru mark; semivoiced sound; p-sound
人
(じん)
-ian (e.g. Italian); -ite (e.g. Tokyoite); indicates nationality, race, origin, etc.; -er (e.g. performer, etc.); person working with ...; indicates expertise (in a certain field); (usu. in compound words) man; person; people
です
(です)
be; is