Для усиления сравнительной степени перед прилаг. употребляются слова:
much, far, a lot
a bit, a little bit
even
This way is a little bit longer than that one.
Для усиления превосходной степени:
by far\far
in my\his life
have ever seen, heard
in the world
of all
in this city…
! Если стоит выбор между двумя, то прилаг. употребляется в сравнит. степени часто с артиклем the
Between these two bags I would chose (the) smaller one.

As…полож.ст….as                                                                          He is as forgetful as I am
Not so… полож.ст… as                                                                          He is not so\as slim as her sister
Twice\three times etc.\half as … полож.ст. …as                                  She has four times as much money as me
                                                                                                         She is twice as fast as me
The same+N+as                                                                                  She has the same habits as her mother
Look, sound, taste, smell+like                                                          She sounds like an innocent angel
The+сравн.ст….,  the +сравн.ст.                                                          The easier the exam, the higher your marks will be
сравн.ст.+and+сравн.ст.                                                                  It is getting darker and darker
prefer+ -ing form or N+to+ -ing form or N                                          I prefer reading to washing up
would prefer+toInf+rather than+Inf                                                  I would prefer to read rather than watch a film
would rather/sooner+Inf+than+Inf                                                  I’d rather read a book than watch this film
clause+whereas\while+clause (сравнение по контрасту)                  I like drinking coffee whereas my husband likes drinking tea