PRESENTE PERFECTO continuo
S + HAVE(HAS) BEEN + VERBO principal EN GERUNDIO -ING
4.- Pon los verbos de las siguientes frases en presente perfecto simple o presente perfecto continuo (p. 122, 123, 124)
I HAVE OPENED (open) my umbrella because it HAS BEEN RAINING (rain).
The whole evening, I HAVE BEEN STUDYING (study) for the exam.
She HAS NOT WATCHED (not watch) television for years but we do not miss it at all.