母親は子どもの歯を虫歯から守ってやらなければならない。

Sentence Analyzer

English Translation

A mother must protect her child's teeth from decay.

Furigana

母親(ははおや)は子(こ)どもの歯(は)を虫歯(むしば)から守(まも)ってやらなければならない。

Romanji

Hahaoya wa kodomo no ha o mushiba kara mamotteyaranakerebanaranai.

Words

母親 (ははおや)

mother

は (は)

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

子供 (こども)

child; children

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

歯 (は)

tooth

を (を)

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

虫歯 (むしば、うし、くし)

cavity; tooth decay; decayed tooth; caries

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

守る (まもる)

to protect; to guard; to defend; to keep (i.e. a promise); to abide (by the rules); to observe; to obey; to follow