これが私にできることの一つだ

N5 これ kore this, this one N5 私 watashi I N5 できる dekiru to be able to (to accomplish) N5 一つ hitotsu one thing, one item

N4 私 shi / watakushi, watashi private, I, me N5 一 ichi, itsu / hito-, hito.tsu one, one radical (no.1), un

N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context N5 〜と to Indicates company, quotation, natural condition, complete list, or direct connection between elements N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase