来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/21 20:58:22
英语语法高手请帮我分析这句话
As ( ) announced in today's papers, the Shanghai Export Commodities Fair is also open on Sunday.
A.being B.is C.to be D.been
为什么选B不选A?请说详细点,谢谢!
这是一固定用法.此句中As引导的句子为非限制性定语从句的倒装句,对后面的主句进行修饰.
类似的结构还有：As is said above
As is reported above等
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