difference of 'has injured' and 'was injured'

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. She was injured in the accident.
  2. She has injured in the accident.
    Can you tell me the meaning of these statement in context and the usage of perfect tense and past tense in the sentences. how do i explain to the students?
2
  1. She has injured in the accident.— Grammatically incorrect.

( She has been injured in an/the accident - is OK.)

  1. She was injured in the accident. It has happened. Past tense.