つつ/つつも => While A, B. Although A (is beng done), B N2
Information, Report
てしょうがない/てしかたがない => Very A; Really A; Extremely A N2
Degree, Level, Amount
に[違「ちが」]いない => Without a doubt, A N2
Information, Report
つ~つ => Doing A and B (repeatedly, one after another) N1
Information, Report
[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements
ようがない => There is no way to do A N2
Potential, Possibility
はずがない => Cannot be A, should not be A N4
Sentence Endings
ながらに,ながらの,ながらにして => While A, during the condition A, Since A (point in time) N1
Time, Situation
ない[方「ほう」]がよい => It would be better to not A N4
Can, Should, Must
~ながら、 => While A, B N5
Verb suffixes
でも[差「さ」]し[支「つか」]えない => It's OK if A, it doesn't matter if A N1
Need/Requirements
ながら(も) => Although A, B N2
Contrast,Surprise