谁给分析一下这句英文倒装句的结构becauseatnoprevioustimehasAmericansecuritybeenasseriouslythreatenedfromwithoutasitistoday.来自Roosevelt2023年的国会演讲

问题：谁给分析一下这句英文倒装句的结构becauseatnoprevioustimehasAmericansecuritybeenasseriouslythreatenedfromwithoutasitistoday.来自Roosevelt2023年的国会演讲

答案：↓↓↓

李盛凤的回答：

网友采纳　　atnoprevioustime属于否定词提到句首,采取部分倒装,正常语序为:becauseAmericansecurityhasbeenasseriouslythreatenedfromwithoutatnoprevioustimeasitistoday.