条件形 => Conditional form N4
の下で/の下に => under; with ~ N2
以下 => As follows, below N3
Standard
のが下手 => to be bad at doing something N5
[事「こと」]だ => A is necessary/good (offering advice/suggestion) N3
Needs, Requirement
て[下「くだ」]さる => Do for someone N4
Give and take advice
事と次第によって => Depending on the progress of the situation N2
How to say the beginning
[以下「いか」] => Less than A, under/below A (amount) N1
Degree/ Level/Amount
て下さいませんか => Please do A (polite) N5
Asking and Telling
[下「くだ」]さる => Give B to A (A is you, your friends, your family, etc.) N4
Give and take advice
[事「こと」]ができる => Be able to A; can do A, Can A; be possible to A; N4
Causative, Passive, Volitional
に[限「かぎ」]った[事「こと」]ではない => It's not limited to A, it's not only A N1
Degree/ Level/Amount