be
been -
I/be/to Madagascar.
I've been to Madagascar.
I/not see/him since last Monday.
I haven't seen him since last Friday.
lose
lost
They/read/HOBBIT/twice.
They've read Hobbit twice.
I/not see/Sarah lately.
I haven't seen Sarah lately.
break
broken
They/be/marry/for/fifty years.
They've been married for fifty years
I/not do/too many stupid things in my life.
I haven't done too many stupid things in my life.
grow
grown
I/know/you/ 15 years, but/I/never/hear/you/speak/like that/before
I've known you for 15 years, but I've never heard you speak like that before.
He/not be/unemployed/ since he left school.
He has not been unemployed since he left school.
find
She/remind/me/we/be/married for 10 years.
She has just reminded me we have been married for 10 years.
I/never/meet/his wife.
I have never met his wife