文法ノート３ぐらいかな

細かいところだけど、重要な文法

both, either, neither の違い

Both

I need you both to do this.  two of two

I don’t need you both do this.  one of two

Either 

I need either you or him to do this.  one of two

I don’t need either you or him to do this.  none of two

Neither 

I need neither you or him to do this.  none of two

worthの使い方

worth + Ving/ it to V + …

be + of nounの意味

be + of noun = be + adjective 

as long as と as far asの違い
as long as 仮定法の意味を持つ
as far as 能力などの程度を表す
ex)  As long as I understand, 〜　　私がもしちゃんと理解できてるなら〜
      As far as I understand,  〜　　　私が理解するかぎりでは〜