本当にごめんなさい、もう二度としないから

N5 本当 hontou truth, real, true N3 ごめんなさい gomen nasai sorry, excuse me N5 もう mou already / more N5 二 ni two, number two N3 度 tabi time, occasion, occurrence counter N5 ない nai there isn't, doesn't have

N5 本 hon / moto book, present, main N3 当 tou / a.taru, a.tari, a.teru, a.te, masa.ni, masa.nibeshi hit, right, appropriate N5 二 ni, ji / futa, futa.tsu, futatabi two, two radical (no. 7), deux N4 度 do, to, taku / tabi, -ta.i degrees, occurrence, time

N5 〜から kara Indicates cause or reason, equivalent to because or since, connects two clauses explaining reason N5 〜もう mou Indicates recent completion or change, equivalent to already, shows action completed before now N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action 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 〜か ka Marks a question, alternative, or uncertainty, appears at the sentence end or between options