彼はまだ来ないかもしれません。

N5 彼 kare he N5 まだ mada still / yet N4 もし moshi if, in case, supposing

N3 彼 hi / kare, kano, ka.no he, that, the N5 来 rai, tai / ku.ru, kita.ru, kita.su, ki.tasu, ki.taru, ki, ko come, due, next

N4 〜かもしれない kamoshirenai Indicates uncertain possibility, attaches to verb adjective or noun, means maybe or it may be that N5 〜ます masu Used at the end of verbs, polite present or future form, makes the sentence more polite N5 〜まだ mada Indicates something has not changed yet, equivalent to still or yet, used with positive or negative forms N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜も mo Means also, adds another similar item, often replaces particles such as wa ga or o N5 〜か ka Marks a question, alternative, or uncertainty, appears at the sentence end or between options N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information