にひきかえ => In contrast to A N1
Comparison/ Exchange
~ました/~ませんでした => Polite, past form of verb N5
Verb suffixes
ただし => A。However, B N2
Contrast,Surprise
もし~たなら => If A … N3
Conditional, While
にしたら => From A's perspective, N2
Considering, Concerning
したがって => Because of A, B N2
Reason, Result, Response
[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements
としたところで、としたって => Even from the perspective of A; Even in the case of A N1
Considering/ Concerning
としたら => If A were the case; Supposing A N3
Conditional, While
に[対「たい」]して/に[対「たい」]しては => In response to (topic) A, in regards to A, considering A, in contrast to A N3
Reason, Result, Response
に[対「たい」]して/に[対「たい」]しては => In response to (topic) A, in regards to A, considering A, in contrast to A N2
Reason, Result, Response
てしょうがない/てしかたがない => Very A; Really A; Extremely A N2
Degree, Level, Amount