ざるを[得「え」]ない => Only A is left to do/can be done N2
(Not)only, (Not) even
てさしあげる => Do for N4
Give and take advice
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
てしまう => Did something N4
Secondary Verb
くせして => Even though A N2
Contrast,Surprise
[際「さい」]して/に([際「さい」]し)/に[際「さい」]しての => At the time of A (which starts now).. N2
Time, Situation
~ている。 => Doing something temporarily. N5
Secondary Verbs
てやる => Do for someone N4
Give and take advice
てみる => Try to A N4
Secondary Verb
てしょうがない/てしかたがない => Very A; Really A; Extremely A N2
Degree, Level, Amount
もし~としても => Even if A... (chances of A are pretty low) N3
Not only, Not even
てあげる => Help, do for N4
Give and take advice