[中心「ちゅうしん」]に => With A as the center N2
Miscellaneous
つつ/つつも => While A, B. Although A (is beng done), B N2
Information, Report
ところだった => About to… N3
Will, Decision, Doing
つ~つ => Doing A and B (repeatedly, one after another) N1
Information, Report
たことがある => Have done A before N4
Situations and Experiences
に[答「こた」]えて => In response to A N2
Reason, Result, Response
つつある => In the middle of A; in the process of A N2
Time, Situation
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
たところで => Even if A, although A (is done) N1
(Not)only , (Not) even
たことにする => To do/act/pretend as if A N1
Will, Decision, Doing
しまつだ => Denotes negative results A N1
Reason, Result, Response
といったところだ => Display an amount/level/degree A (程度) N1
Degree/ Level/Amount