A. Before comparatives we can use: much, a lot, far (= a lot), a bit, a little, slightly (= a little)
A1. can use any and no + comparatives (any longer/ no longer etc.)
B. Better and better/ more and more: something changes continuously
C. The ~ the ~: the (sooner/ bigger/ more etc.) the better. The sooner the better (= as soon as possible)
C1. use the ~ the ~ to say that one thing depends on another thing (e.g. The warmer the weather, the better I feel. (=if the weather is warmer, I feel better)
D. use elder (or older) when we talk about people in a family, but do not say that ‘somebody is elder’