Step 1: Identify the error.
The expression “as if” is followed by a verb in the subjunctive mood. In English grammar, after “as if” we use “were” (not “was”) for hypothetical situations.
Step 2: Correction.
- Wrong: “as if I was a king.”
- Correct: “as if I were a king.”
Step 3: Conclusion.
Hence, the corrected sentence is: {He treated me as if I were a king.}