请选择并讲讲为什么？
1. ___ I got home ___ that I had the wrong umbrella.
A. Not until; did I notice B. No sooner; than I noticed
C. Scarcely; did I notice D. Only when; I noticed
答案：A这个题考察部分倒装。题里面出现两种常用倒装的形式：（1）否定词置于句首句子用部分倒装（2）“only + 状语”至于句首，主句用部分倒装。[注意是主句用倒装][其实还出现了两个固定结构：no sooner...than...； scarcely/hardly...when... 两个结构意思都是“一...就...了；刚...就...了”，都要求前用过去完成时后用过去时]四个句子用部分倒装的正确形式分别为：Not until I got home did I notice that I had the wrong umbrella.No sooner had I got home than I noticed th...
