Past perfect simple

((+)) Subject + HAD + past participle --> She had gone to the cinema with her mum. 

(Regular verb) -ed

(Irregular verb) 3rd column

((-)) Subject + HAD + NOT + past participle  --> She hadn't gone to the cinema with her mum.. 

haven't/hasn't

((?)) HAD + Subject + past participle ?  --> Had she gone to the cinema with her mum? 

• to emphasize that an action happened before another action in the past.

I’d only seen Khan in photos before I visited India.

• with the expression ‘It was the first / second / third time’.

It was the first time that I’d tried octopus.