Simon discovers that the so called beast of the island, in really nothing more than the body of a dead airman. His parachute had become tangled and stuck in the trees. Simon cuts the lines of the parachute and allows the body to slip away. Simon is the only character throughout the novel to understand the true nature of the beast; aka the beast is really an evil manifesting within all of the boys.
Ann is the subject of the sentence has taught is the verb phrase students is the direct object junior high are adjectives that modify the direct object students for several years is a prepositional phrase that modifies the verb taught