How to form the Past Perfect Continuous
We form the 'past perfect continuous' tense with:
- the past perfect of the verb 'be': had been
- the continuous form of the main verb: verb in -ing form
For example: 'teach' becomes 'had been teaching', 'work' becomes 'had been working', and 'chat' becomes 'had been chatting'.
Why use the Past Perfect Continuous
Past Perfect Continuous tells us that an action started and ended in the past.
- Past continuous: The children are tired now because they were playing outside all day. (the children were playing outside until now)
- Past Perfect Continuous: The children were tired yesterday because they had been playing outside all day. (the children started and stopped playing yesterday.)
Past Perfect Continuous is often used with the duration of the action and the result of the action.
- I had been studying English for five years when I moved to Melbourne.
- Jane had been swimming for a decade when she won a gold medal at the Olympics.
- Our dog had been attending training classes for a month before he finally learned to sit.
- The architect had been designing buildings for sixty years before he retired.
Do not use Past Perfect Continuous with stative verbs, such as 'be', 'like', 'have', 'live', 'know', and 'believe'. These verbs describe a state of the being and not an action, so they do not need the continuous form. For example, "He had been living there since last year" is incorrect. Say instead: "He had lived there since last year.