${1.}$ The problem is too difficult for us to solve.
→ S + V + too + Adj/Adv + (for +O) + to_V: .... quá ... để cho ai làm gì ...
${2.}$ He is a good swimmer.
→ S + V + Adv = S + Vbe (a/an) + Adj + N
${3.}$ It was such an interesting film that we would watch it many times.
→ S + V + such + (a/an) + Adj/Adv + that + S + V + O: ... quá ... đến nỗi mà
