An annual book festival in west Los Angeles is "sold out" year after year.

题目

An annual book festival in west Los Angeles is "sold out" year after year.
请翻译这个句子,并说明is "sold out"的意思和句子成分.

答案

洛山矶西部的年度书节年年都很卖座!（卖空了!）
sold out应该充当表语成分,而不应该看做被动式!