The structure of the present perfect continuous tense is: their homework? doing been they Have ? her? seeing been you Have ? football. playing been not have We - raining. been not has It - too much. talking been have You + for one hour. waiting been have I + main verb auxiliary verb auxiliary verb subject

The structure of the past perfect continuous tense is: long? waiting been they Had ? drinking? been you Had ? her. expecting been not had We - well. working been not had It - tennis. playing been had You + working. been had I + main verb auxiliary verb auxiliary verb subject

The structure of the future perfect continuous tense is: TV? watching been have they Will ? football? playing been have you Will ? long. waiting been have not will We - the car. using been have not will She - for two days. travelling been have will You + for four hours. working been have will I + main verb auxiliary verb auxiliary verb auxiliary verb subject