'll forget about it by monday , though 
(ROOT (S (VP (MD 'll) (VP (VB forget) (PP (IN about) (NP (PRP it))) (PP (IN by) (NP (NNP monday))) (, ,) (ADVP (RB though))))))
(ROOT (S (VP (MD ) (VP (VB ) (PP (IN ) (NP (PRP ))) (PP (IN ) (NP (NNP ))) (, ) (ADVP (RB ))))))