V n about n
Verbs with other meaningsThere are a few other verbs which have this pattern.
In the case of trouble, the noun group following the verb is always a reflexive pronoun. This pattern is V pron-refl about n.
He seemed on the whole to be a naturally solitary person, troubling himself about only a few friends.
In the case of do and say, the noun group following the verb is always an amount. This pattern is V amount about n The preposition about is sometimes followed by an -ing clause.
Too many children are dying from malnutrition, preventable diseases, and neglect, and too few adults are doing enough about it.
The new coalition government seems too weak to do much about cutting the country's trade surplus.
She didn't say anything about seeing a doctor.
In the case of do and say, too, the preposition about is sometimes followed by a noun group and an '-ing' clause. This pattern is V n about n -ing.
do say (not) trouble
He doesn't really say much about me having HIV, but I think it makes him feel better knowing I'm going through this with him.