あの人は先生に違いありません。

N5 あの ano that, um N5 人 hito person, people N5 先生 sensei teacher

N5 人 jin, nin / hito, -ri, -to person, être humain, personne N5 先 sen / saki, ma.zu before, ahead, previous N5 生 sei, shou / i.kiru, i.kasu, i.keru, u.mareru, uma.reru, u.mare, umare, u.mu, o.u, ha.eru, ha.yasu, ki, nama, nama-, na.ru, na.su, mu.su, -u life, genuine, birth N3 違 i / chiga.u, chiga.i, chiga.eru, -chiga.eru, taga.u, taga.eru difference, differ, différence

N4 〜に違いない ni chigai nai Indicates strong certainty based on evidence or deduction, attaches to verb adjective or noun, means must surely be N5 〜ます masu Used at the end of verbs, polite present or future form, makes the sentence more polite N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information