1) Adverb clauses are dependent clauses that provide information about time, place, reason, condition, or contrast. They begin with subordinating conjunctions like because, when, where, if, although.
2) The document discusses different types of adverb clauses including time (when, as soon as), place (where), reason (because, since), condition (if, unless, even if, only if), and contrast (although, even though).
3) Examples are provided to illustrate each type of adverb clause and how they are used in sentences. Practice questions ask the reader to combine sentences using the correct conjunctions.