nihongokyoshi-net.com/2019/09/12/jlptn1-grammar-kototote/
Explains the N1 grammar pattern 〜こととて, used to express reasons for apologies in formal Japanese. Provides conjugation rules, example sentences with English translations, and notes on its old-fashioned usage.
GrammarIn JapaneseJLPT N1JLPTExample sentencesSentence patterns