Uses
USE 1 Duration Before Something in the Past
We use the Past Perfect
Continuous to show that something started in the past and continued up until
another time in the past. "For five minutes" and "for two
weeks" are both durations which can be used with the Past Perfect
Continuous. Notice that this is related to the Present Perfect Continuous;
however, the duration does not continue until now, it stops before something else
in the past.
Examples:
They had been talking for over
an hour before Tony arrived.
She had been working at that
company for three years when it went out of business.
How long had you been waiting
to get on the bus?
Mike wanted to sit down
because he had been standing all day at work.
James had been teaching at the
university for more than a year before he left for Asia.
A: How long had you been
studying Turkish before you moved to Ankara?
B: I had not been studying
Turkish very long.
USE 2 Cause of Something in the Past
Using the Past Perfect
Continuous before another action in the past is a good way to show cause and
effect.
Examples:
Jason was tired because he had
been jogging.
Sam gained weight because he
had been overeating.
Betty failed the final test
because she had not been attending class.
Structure
Time expressions
To make this easier. check out this video
Past Continuous vs. Past Perfect Continuous
If you do not include a duration such as "for five minutes," "for two weeks" or "since Friday," many English speakers choose to use the Past Continuous rather than the Past Perfect Continuous. Be careful because this can change the meaning of the sentence. Past Continuous emphasizes interrupted actions, whereas Past Perfect Continuous emphasizes a duration of time before something in the past. Study the examples below to understand the difference.
Examples:
- He was tired because he was exercising so hard.
This sentence emphasizes that he was tired because he was exercising at that exact moment. - He was tired because he had been exercising so hard.
This sentence emphasizes that he was tired because he had been exercising over a period of time. It is possible that he was still exercising at that moment OR that he had just finished.
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