To form a verb in the past tense, you need: 1. the present tense form of avoir (e.g. j’ai, il a, ils ont) 2. the past participle of the verb. You need to learn off the past participles for irregular verbs
past participle of: to be
été
past participle of: être
été
past participle of: avoir
eu
past participle of: to have
eu
past participle of: écrire
écrit
past participle of: to write
écrit
past participle of: dire
dit
past participle of: to say/tell
dit
past participle of: to do/make
fait