She said that her mother ( ) for three years.A.has been dead

She said that her mother ( ) for three years.A.has been dead He has been dead for three years jack has been dead for three years Her mother has been a Party member for three years.（同义句） Her her mother has been a party member for three years =her moth He has died for three years.He has been dead for three years His grandmother() for three years A.died B.dead C.has been d Her grandmother has been dead for two years 为什么是 her grandmather has been dead for two years同义句 she has been dead for three years.解释下been的作用.我知道是现在完成时,但不明白为 Her mather has been a club member for three years同义句转化 If said that her mother()for 3 years