The Present Perfect Progressive tense
Present Perfect Progressive describes two forms of events:
| longer events, which found an end very recently | longer events, which continue in the present |
|---|---|
| You look horrible! What have you been doing? - I've been celebrating all night. (Now I’m at home) | You look horrible! What have you been doing? - I've been working for ten hours. (I’m not yet finished) |
Attention when forming Questions:
- What have you been doing?
- …since we met last time?
- What have you done (with your hair)?
- I can see the results of it.
"since" or "for"?'
We often use for and since when talking about time.
- for + period: A period is a duration of time, for example: 5 minutes, 2 weeks, 6 years. For means "from the beginning of the period until the end of the period." For can be used with all tenses.
- since + point: A point is a precise moment in time, for example: 9 o'clock, 1st January, Monday. Since means "from a point in the past until now." Since is normally used with perfect tenses.
| since | for |
|---|---|
| since 10 am | for 10 hours |
| since yesterday morning | for 1 day |
| since Wednesday | for two days |
| since Easter | for half a year |
| since 1989 | for a long time |
| since the Roman period | for ever |
| (point of time) | (time period) |