昨夜は三時間しか寝てない

N5 昨夜 yuube last night N5 三時間 sanjikan three hours N5 ない nai there isn't, doesn't have

N3 昨 saku yesterday, previous, hier N4 夜 ya / yo, yoru night, evening, nuit 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 寝 shin / ne.ru, ne.kasu, i.nu, mitamaya, ya.meru lie down, sleep, rest

N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜か ka Marks a question, alternative, or uncertainty, appears at the sentence end or between options N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information