Question

SAT语法题 帮忙解答一下。

The valuable stringed instruments in this display, all more than 300 years old, were carefully crafted by artisans famous in their day but (long since) forgotten.
括号里的long since 为什么没有错啊。

Answer 1

long since=long ago:

ad. 很久以前(早已,久已)

例句：I have long since forgotten what we quarrelled about last time we met.我早就忘了我们上次见面吵了些什么。
He has long since been recognized as a great playwright.
他早就被公认为伟大的剧作家了。

你的这个句子还省略了一部分：but the artisans had long since been forgotten
因为主语与前面相同，所以省略了这部分，这在英语很常见。

望采纳，谢谢！

Answer 2

啊，知音呐，这题我也不会

Answer 3

long since 是一个副词短语，表示“早已，早就”，修饰 forgotten，没有错。