题目内容：

His grandfather died three years ago.（同义句转换）
____ _____three years____his grandfather died.

优质解答

It was three years since/ago his grandfather died.过去时的话用since和ago都是可以的,ago的后面也可以加that例句：It was three years since (= ago) the great man died.这位伟人过世的时间是三年以前.下面两句...