~ましょう。 => Let's (together), Shall I/we…? N5
Verb suffixes
へ => Go to N, head to N , Often followed by verbs like 行く/いく, 来る/くる, 向かう/むかう… N5
Particles
でしょう => I think... Probably.., I wonder if... N5
Miscellaneous
てしまう => Did something 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
て[頂「いただ」]けないでしょうか? => Could you please A for me? N4
Secondary Verb
ようになる/なくなる => Become… N3
Time, Situation
をくださいませんか => Please give me A (polite) N5
Asking and Telling
くせして => Even though A N2
Contrast,Surprise
てくれてありがとう => Thank you for doing A N4
Honorifics
うか~まいか => Whether to do A or B (do or not do) N1
Will, Decision, Doing
うと~まいと,うが~まいが => Whether or not A (is/occurs) N1
Based/focused/depending on