んです => Because, by… N4
Situations and Experiences
に[反「はん」]して/に[反「はん」]し/に[反「はん」]する/に[反「はん」]した => In contrast to A N2
Contrast,Surprise
たことにする => To do/act/pretend as if A N1
Will, Decision, Doing
~ます/~ません => Polite, present form N5
Verb suffixes
の[末「すえ」]/た[末「すえ」] => conclusion N2
Reason, Result, Response
ことにする => Decide to N4
Causative, Passive, Volitional
たとたん => As soon as A (occured), B N3
Time, Situation
~たり~たりする => Do things like V1,V2 N5
Verb suffixes
~ました/~ませんでした => Polite, past form of verb N5
Verb suffixes
んがため => For the purpose of doing A N1
Reason, Result, Response
こそすれ => B is definitely not so (strongly emphasized) N1
Contrast/Surprise
ところだった => About to… N3
Will, Decision, Doing