たとたん => As soon as A (occured), B N3
Time, Situation
に[比「くら」]べて/に[比「くら」]べ => When compared to A N3
Comparison, Exchange
~ました/~ませんでした => Polite, past form of verb N5
Verb suffixes
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
んがため => For the purpose of doing A N1
Reason, Result, Response
ところだった => About to… N3
Will, Decision, Doing
べからざる => Cannot A N1
Potential, Possibility
に[答「こた」]えて => In response to A N2
Reason, Result, Response
たことがある => Have done A before N4
Situations and Experiences
べきだ/べきではない => Should do A; Must do A, Should not do A; Must not do A N3
Needs, Requirement
べからず => Shouldn't do A (A is forbidden) N1
Will, Decision, Doing
に[越「こ」]したことはない => It's better if A, it's better if it's A N1
Comparison/ Exchange