to have been done结构怎么用
问题描述：
to have been done结构怎么用
Many of the crimes have gone ___,because some people dare not report them to the police.
A to have been unnoticed
B unnoticed
帮我分析A错在哪里
答
go在这里作系动词使用（类似于become）,后面接形容词（表语）,unnoticed是过去分词形容词化了.又如The apple has gone bad. Don't eat it.这个苹果已经烂了,不要吃. A项重复使用完成时,罗嗦、读起来拗口别扭.