宝墨园二日旅游团购:His grandfather ___for thirty years.

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Adied Bwas dead Chas been dead Dhas died
解释一下原因

His grandfather ___for thirty years.
选C:has been dead
for thirty years,决定了用完成时态,dead:死的,表示一种延续性状态,与系动词be的完成时态been连用,die是暂短性动词,不可以用。

c

C has been dead
由于有For 所以又是一种持续状态

c
died是一个瞬间动词,不能延续
so用它的形容词形式dead

C has been dead

有 for 表时间的句子宜用现在完成时.