My grandfather has been dead for many years.这句话为什么用has been的形式 死亡为什么是被动语态?还有My brother has never been abroad before.这句话为什么也用被动语态?

A:This is my grandfather B:_______ My grandfather often _______ in the eveningA .takes a trip B .watches TV C .has a picnice My grandfather has ____ (开车) for many years. My grandfather has been _______ for ten years (die) how is your grandfather?My grandfather __ for two years.A.died B.has died C.has been died D.has been dead这里为什么要用dead形容词呢? my grandfather has exercised for over ten years同义句my grandfather has exercised ＿ ＿ ＿ ten years ＿. 同义句my grandfather has been dead for five years it is five years ███ my grandfather My grandfather in the in the smalltown all his life ,he always says he likes the townA lived B have lived C has lived D is living 52页78.My grandfather usually --------his glasses before he does some reading .A.has B.puts on C.dresses D.wears 为什么 My grandfather has a computer,but he doesn't know _____ to use it.A、what B、how C、who D、which I's my grandfather's birthday___Sunday.A.thisI's my grandfather's birthday___Sunday.A.this B.on this C.on My grandfather has many interesting stories.对many interesting stories提问 My grandfather has many interesting stories(对划线部分提问) interesting stories My grandfather was very sad and seldom told me what he____during the terrible accidentA.had gone against B.has gone over C.had gone through D.has gone into It was my grandfather who bought the instrument many years ago可以写成my grandfather has bought the instrument many years 还有为什么一定要it做形式主语?直接my grandfather who bought the instrument many years ago不行吗? My father is my grandfather's _____.A.son B.daughter C.uncle My new computer is ( )my grandfather.A.for B.from C.to My grandmother often tells me---my grandfather.A.for B.about C.from D.to