[译] 只是到了昨天，我才意识到情况是怎样的。
[误] Only yesterday I realized what was going on.

[正] Only yesterday did I realized what was going on.
[注] only 是加强语气的词，它与状语组合提到句首，主谓就应倒装。如果 only 或者 only 与状语的组合不在句首，而在句子中间或后面部位，都不引起主语与谓语的倒装。当 only 不是限制状语，而是限制主语，就不用倒装语序。例如：Only then did I realize the importance of learning English. 只是在那时我才认识到学习英语的重要性。/Only in Paris can you buy shoes like that. 只有在巴黎才能买到那样的鞋。/Only five men did he see. 他看到的只有 5 个人。/Only a doctor can do that. 只有医生才能那样做。