In

Hey Rex, the verbs you're looking for are 'bring' (bring in) and 'cave' (cave in), you can't be wrong since except could, that is the auxiliary of bring, you have only 2 verbs

I don't understand what Francesca says here.

Maybe I did not understand what you were asking. Didn't you ask that you wanted to know what were the verbs that 'in' modified?
Well, I simply said that the verbs are 'bring' and 'cave'. In fact bring and cave without 'in' have got another meaning.
Excuse me if I didn't get your questions and please tell me again what you want to know

Rex1. Could you bring the clothes in for me?

In the above, the word 'in' is not a preposition; it is an adverb.
This means it modifies a verb. Which is the verb it modifies in the above?

2. Many buildings caved in during the hurricane.
Even in the above the word 'in' is an adverb.
I just want to know the verb it modifies here.

Could you bring the clothes in for me?

The word 'in' is not a preposition here. It is an adverb.
This means it modifies a verb. I see two verbs in the sentence.
The words 'could' and ' bring' are verbs.
Does the adverb modifies the verb 'could' or 'bring' ?

I hope you understand my question now.

in goes with bring -- not with could. It tells where to bring the clothes: in (inside) Presumably the speaker is located inside a house or inside some other enclosure.

CJ

RexI don't understand what Francesca says here.

Rex,

What Francesca meant was, the verbs in your questions; like many others are called "phrasl verbs". They are verbs that work with prepositions and or adverbs to form a slightly different meaning. i.e. walk away, fill up and fall down etc...Here is a website with good examples:

I guess the answer is bring...