私たちのクラスは５０人の男の子から成り立っている。

Sentence Analyzer

私たちのくらすは５０人の男の子から成り立っている。

English Translation

Our class consists of fifty boys.

Furigana

私(わたし)たちのクラスは５０人(にん)の男(おとこ)の子(こ)から成(な)り立(た)っている。

Romanji

Watashitachi no kurasu wa go zero nin no otokonoko kara naritatteiru.

Words

私たち (わたしたち、わたくしたち)

we; us

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

クラス (クラス)

class

は (は)

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

五 (ご、いつ、い)

five

○ (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

男の子 (おとこのこ、おとこのコ)

boy; male child; baby boy

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

成り立つ (なりたつ)

to consist of; to be made up of; to be composed of; to be practical (logical, feasible, viable); to be concluded; to hold true