the bookshop __since two years ago.

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the bookshop __since two years ago.
A has been opened B has been open为什么选B不选A呢!麻烦讲清楚!
有since 不是时间点吗

has been 后面是加的表示状态的词
has been open的意思是 “开了两年了” 这里的open是adj.形容词
opened 是open作为动词的时候的过去式形式.如果要将OPEN作为动词用,句子应该改成 the bookshop was opened two years ago.（open是瞬间动词,“开”只是一个瞬间,不表示持续的状态）
希望对你有用.
since 后面加时间点 two years ago 就是一个时间点,还有例如three o'clock,I was born 都是时间点,
但是since的主句部分应该是表示持续状态的.

accident,took,two,ago,the,place,years She bought the car two years ago. I first met Tony three years ago.He ___ at a bookshop at the The helping program started two years ago.two years ago划线部分提 the swimming club opened two years ago（用since two years ago two years ago ,my brother j___ the army. My father__(五个空) the Party_____________ two years ago. He joined the club two years ago .同义句 Two years ago,the king killed with his wife I was there for the last time two years ago I bought the bike two years ago.(同义句) He came to the city two years ago同义句