私は日本へ行ったことがあります。

N5 私 watashi I N5 日本へ nihon e to Japan N5 行ったことがあります itta koto ga arimasu have been

N4 私 shi / watakushi, watashi private, I, me N5 日 nichi, jitsu / hi, -bi, -ka day, sun, Japan N5 本 hon / moto book, present, main N5 行 kou, gyou, an / i.ku, yu.ku, -yu.ki, -yuki, -i.ki, -iki, okona.u, oko.nau going, journey, carry out

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 〜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