くらいなら => I would prefer (doing) B over A N1
Contrast/Surprise
くらいだ/ぐらいだ => Around/about N5
Amount
とはくらべ[物「もの」]にならない => It's no match for A N1
Comparison/ Exchange
ないと,なくちゃ => Must do A N3
Needs, Requirement
かいもなく => Even though A, N2
Contrast,Surprise
なくてもいい => Don't have to A N4
Can, Should, Must
~ないでください => Please don't do~ N5
Asking and Telling
かと[思「おも」]ったら/かと[思「おも」]うと => Athough A, B., As soon as I noticed A, B, almost immediately after A, B N2
Time, Situation
ねばならない => Must A N2
Needs, Requirements
ずにはいられない/ないではいられない => Can't help but A; A is unavoidable N2
Will, Decision, “Doing”
なくてはいけない => Must do A; have to A N4
Can, Should, Must
に[比「くら」]べて/に[比「くら」]べ => When compared to A N3
Comparison, Exchange