Grammar Lab · Present perfect continuous

• • Have/has been + werkwoord + -ing: iets is begonnen in het verleden en gaat nog door.
• • De nadruk ligt op de duur: How long have you been waiting?
• • Vergelijk: I have written three emails (resultaat) — I have been writing emails all morning (duur).

since 9 am ══════► nu (nog bezig)

• I've been learning English for six years.
• She has been working on her essay all evening.
• Have you been running? You look tired.
• They haven't been studying much lately.

Signaalwoorden: how long · for · since · all day · lately