Answer:
The sentence you provided is a simple sentence that describes a particular event, in which the speaker turned a corner and almost stepped on a large snake on the path.
On the other hand, an antecedent-anaphor pattern involves the use of a pronoun (anaphor) to refer back to a previously mentioned noun (antecedent) in order to avoid repetition. For example, in the sentence "John went to the store. He bought some milk," "he" is the anaphor that refers back to "John" as the antecedent.
So, the sentence you provided differs from an antecedent-anaphor pattern in that it does not use a pronoun to refer back to a previously mentioned noun, but rather describes a new event that occurred after the initial event (turning the corner).
Step-by-step explanation: