彼は一度も休むことなく三時間働き続けた

N5 彼 kare he N4 一度 ichido once, one time N5 休む yasumu rest, take a break, be absent N5 三時間 sanjikan three hours

N3 彼 hi / kare, kano, ka.no he, that, the N5 一 ichi, itsu / hito-, hito.tsu one, one radical (no.1), un N4 度 do, to, taku / tabi, -ta.i degrees, occurrence, time N5 休 kyuu / yasu.mu, yasu.maru, yasu.meru rest, day off, retire N5 三 san, zou / mi, mi.tsu, mitsu.tsu three, trois, tres N5 時 ji / toki, -doki time, hour, temps N5 間 kan, ken / aida, ma, ai interval, space, intervalle N3 働 dou / hatara.ku work, (kokuji), travailler N3 続 zoku, shoku, kou, kyou / tsuzu.ku, tsuzu.keru, tsugu.nai continue, series, sequel

N3 〜ことなく koto naku Indicates absence of an action, attaches to a verb, written form meaning without doing N4 〜続ける tsuzukeru Indicates continuation of an action over time, attaches to the verb stem, means continue doing N5 〜と to Indicates company, quotation, natural condition, complete list, or direct connection between elements N5 〜も mo Means also, adds another similar item, often replaces particles such as wa ga or o N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information