According to the definition I read on anaphors, it is an expression, which refers back to a word. As examples what this anaphoras can be I was given a pronoun and adverb:
Anaphor realized by a pronoun:
Teresa caressed the dying tree, her well formed lips were about to kiss it good-bye
Anaphor realized by an adverb:
Chris avoided to hug her, in doing so he made sure there will be nothing left of him once the memories were gone.
How about other realizations? Are there any? Could a whole sentence be an anaphor, if not, why not?