Past Perfect Tense

Formula :

subject+auxiliary verb HAVE+main verb

(+) : S + had + V3

(-) : S + had + not + V3

(?) : Had + S + V3

Example :

(+) When my brother arrived , I had painted my motor cycle

 (-) When my brother arrived , I hadn’t painted my motor cycle

 (?) Had I my motor cycle , when my brother arrived ?