週末に部屋を掃除します。

N3 週 shuu week N3 末 sue end, tip, future N5 部屋 heya room N5 掃除します souji shimasu clean

N4 週 shuu week, semaine, semana N3 末 matsu, batsu / sue, ura, ure end, close, tip N3 部 bu / -be section, bureau, dept N4 屋 oku / ya roof, house, shop N2 掃 sou, shu / ha.ku sweep, brush, balayer N3 除 jo, ji / nozo.ku, -yo.ke exclude, division (x/3), remove

N5 〜ます masu Used at the end of verbs, polite present or future form, makes the sentence more polite N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜を o Marks the direct object of an action, appears before the verb, shows what receives the action N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action