私は寿司を食べたことがあります。

N5 私 watashi I N5 食べたことがあります tabeta koto ga arimasu have eaten before

N4 私 shi / watakushi, watashi private, I, me N1 寿 ju, su, shuu / kotobuki, kotobu.ku, kotoho.gu longevity, congratulations, one's natural life N1 司 shi / tsukasado.ru director, official, govt office N5 食 shoku, jiki / ku.u, ku.rau, ta.beru, ha.mu eat, food, manger

N3 〜ことがある koto ga aru Indicates past experience or occasional occurrence, attaches to a verb, means have done before or sometimes happens N5 〜ます masu Used at the end of verbs, polite present or future form, makes the sentence more polite N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜を o Marks the direct object of an action, appears before the verb, shows what receives the action N5 〜と to Indicates company, quotation, natural condition, complete list, or direct connection between elements N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information