私は友達に手紙を書きます。

N5 私 watashi I N5 友達 tomodachi friend N5 手紙 tegami letter N5 書きます kakimasu write

N4 私 shi / watakushi, watashi private, I, me N5 友 yuu / tomo friend, ami, amigo N3 達 tatsu, da / -tachi accomplished, reach, arrive N4 手 shu, zu / te, te-, -te, ta- hand, main, mano N4 紙 shi / kami paper, papier, papel N5 書 sho / ka.ku, -ga.ki, -gaki write, écrire, escritura

N5 〜ます masu Used at the end of verbs, polite present or future form, makes the sentence more polite 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 N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information