Susan started studying two hours ago.
Susan has been studying for two hours.
I started watching videos at four o'clock.
I have been watching videos since 4 o'clock.
It started snowing yesterday morning.
It has been snowing since yesterday morning.
John started learning French two years ago.
John has been learning French for two years. / since 2019
Mark started cleaning his room at 2 o'clock.
Mark has been cleaning his room since 2 o'clock.
Martha started playing the drums when she was six.
Martha has been playing the drums since she was six.
Miss Smith started teaching here in 2015.
Miss Smith has been teaching here since 2015. / for 6 years
I started doing my HW at 5 o'clock.
I have been doing my HW since 5 o'clock.
The boys _____ basketball at the moment. (play)
The boys are playing basketball at the moment.
I _____ in the pool for 3 hours. (swim)
I have been swimming in the pool for 3 hours.
It _____ now. (rain)
It is raining now.
The baby _____ since 10 o'clock. (sleep)
The baby has been sleeping since 10 o'clock.
I _____ Cathy for 5 years. (know)
I have known Cathy for 5 years.
She ______ always ______ funny films. (like)
She has always liked funny films.
_____ Nick _______ since 3 o'clock? (study)
Has Nick been studying since 3 o'clock?
____ they __________ for a long time? (wait)
Have they been waiting for a long time?
