We use the Present Perfect Continuous to show that something started in the past and has continued up until now. "For five minutes," "for two weeks," and "since Tuesday" are all durations which
Continuous to show that something started in the past
and has continued up until now. "For five minutes," "for two weeks," and "since Tuesday" are all durations which can be used with the Present Perfect Continuous.
Perfect Continuous WITHOUT a duration such as "for two
weeks." Without the duration, the tense has a more general meaning of "lately." We often use the words "lately" or "recently" to emphasize this meaning.
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Examples: Recently, I have been feeling really tired. She has been watching too much
television lately. Have you been exercising lately? Mary has been feeling a little depressed. Lisa has not been