+ verb → preposition
+ verb → adverb
Adverbials fall into two groups: type I adverbials and type II adverbials. Type I adverbials can appear before and after the arguments, while type II adverbials can only appear at the end of a clause. Whether an adverbial is type I or type II depends on the verb class. All verbs that aren’t part of a special class (such as Tense or Negation) form type I adverbials.
Type I adverbials add additional details to a clause, such as time or place:
Type II adverbials have scope over the verbal complex and the post-field: