おじさんが道案内をしてくれました。

N5 おじさん ojisan uncle, middle-aged man N5 道 michi road, path N4 案内 annai guidance, information, 안내

N4 道 dou, tou / michi, iu road-way, street, district N1 案 an / tsukue plan, suggestion, draft N3 内 nai, dai / uchi inside, within, between

N4 〜てくれる te kureru Indicates someone does something for the speaker or close group, attaches to the te-form verb N5 〜ます masu Used at the end of verbs, polite present or future form, makes the sentence more polite N5 〜てください te kudasai Polite request expression, attaches to te-form verb, equivalent to please do N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also 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