as if

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. She talks as if she is rich.
  2. She talks as if she was rich.
  3. She talked as if she was rich.
  4. She talked as if she had been rich.
  5. She talked as if she were rich.
    Please check up all these sentences if their tenses are OK?
2

These days, all are acceptable.
Traditionally, ‘was’ would not be used in a conditional statement. ‘Were’ is what would be accepted.