彼が遅れるはずがないからもう来ていると思う

N5 彼 kare he N4 遅れる okureru be late, be delayed N4 はず hazu logical expectation, should be N5 もう mou already / more N5 ている te iru be doing N4 思う omou think, feel, suppose

N3 彼 hi / kare, kano, ka.no he, that, the N3 遅 chi / oku.reru, oku.rasu, oso.i slow, late, back N5 来 rai, tai / ku.ru, kita.ru, kita.su, ki.tasu, ki.taru, ki, ko come, due, next N4 思 shi / omo.u, omoera.ku, obo.su think, penser, pensar

N3 〜はずがない hazu ga nai Indicates logical impossibility based on expectation or evidence, attaches to verb adjective or noun, means cannot be that N5 〜ている te iru Indicates ongoing action, continuous state, repeated habit, or resulting condition depending on context N5 〜と思う to omou Indicates speaker thought opinion or assumption, connects clause with mental expression N5 〜から kara Indicates cause or reason, equivalent to because or since, connects two clauses explaining reason N5 〜もう mou Indicates recent completion or change, equivalent to already, shows action completed before now 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 〜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