んです => Because, by… N4
Situations and Experiences
~ます/~ません => Polite, present form 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
すると => A. Right after, B N2
Time, Situation
からすると => Considering A... N2
Considering, Concerning
ことにする => Decide to N4
Causative, Passive, Volitional
ものとする => A is decided N1
Information, Report
たとたん => As soon as A (occured), B N3
Time, Situation
もなんともない => Not A at all N1
Adjectival, Descriptions
[謙譲語「けんじょうご」] => Humble form of A, humble form of する verbs N4
Honorifics
てとうぜんだ => A is common, natural, not surprising N2
Adjectival, Descriptions
すら,ですら => Even A N1
(Not)only , (Not) even