Thank you so much, Gustavo and David, I understand! Could I ask you to look at some more sentences?
(4) Take a look what you've done!
(5) a. Look how much money he makes!
b. Look the amount of money he makes!
(6) Listen what they are saying!
Would you think the preposition can be dropped in light verb constructions such as "Take a look" in (4)? Supposing (5a) is acceptable, what would you think about (5b), in which "the amount of money" is a paraphrase of "how much money"? Would you think the verb "listen" can be used without the preposition "to" just like the preposition-less "look" construction?