Perfect continuous tense

 Present perfect continuous tense

Rule- S+has/have+been+V+ing+O

She has been eating food.

They have been going to school.

Past perfect continuous tense

Rule- S+had+been+V+ing+O

They had been going to school.

She has been eating some food.

Future perfect continuous tense

Rule- S+will/shall+have+been+V+ing+O

He will have going to delhi.

We will have dancing in the party.