Question

What 2 parts are needed to make a sentence in the Passe Compose?​

Answer 1

to form the passé composé, you need the auxiliary verb (avoir or être) and the past participle (for example, for an infinitive ending in er, take off the er and add é.)
i hope this helps :)

Answer 2

The passé composé consists of two parts, the present tense of an auxiliary, or helping verb (either avoir or être ), and a past participle. In most instances the auxiliary verb used is avoir.