にひきかえ => In contrast to A N1
Comparison/ Exchange
~ます/~ません => Polite, present form N5
Verb suffixes
~ませんか => Let's…, Would you like to... N5
Verb suffixes
[禁止「きんし」] => Don't do N4
Can, Should, Must
て下さいませんか => Please do A (polite) N5
Asking and Telling
~ました/~ませんでした => Polite, past form of verb N5
Verb suffixes
をくださいませんか => Please give me A (polite) N5
Asking and Telling
させて[頂「いただ」]きます/させてもらいます => Allow me to A N1
Miscellaneous
せいで/せいか => Because of A, B N3
Reason, Result, Response
[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements
くせして => Even though A N2
Contrast,Surprise
を[禁「きん」]じ[得「え」]ない => Can't help but do A, can't hold back from A (emotional response to something) N1
Will, Decision, Doing