Types and Structure of Sentences

[kjbong]

Hello, please help.

1. Is the sentence below considered as a simple sentence?
2. Is the phrase 'with a bang' an adverbial phrase which takes up the function as an adverb
that modifies the verb 'hit' ? Or it is a prepositional phrase ?

The long eight-wheeled truck overturned unexpectedly and hit the wall with a bang and burned.

Thanks.

[Tdol]

First, what are your thoughts?