Tom and Jess have seen this film(see)
Jack have drunk his tea(drink)
I/you/we/they/ + have +V3/ed
He/she/it +has +V3/Ed
has drunk
Tom and Jess have seen this film(see)
Jack have drunk his tea(drink)
I/you/we/they/ + have +V3/ed
He/she/it +has +V3/Ed