only的倒装句
1.按英语习惯同,当“only+状语”位于句首时,其后句子要用部分倒装.如：
Only then did he realize that he was wrong.到那时他才意识到他错了.
Only in this way are you able to do it well.你只有用这种方法才能把它做好.
2.在句首的only如果后面跟了副词、介词短语或从句等状语,则主句用倒装结构.如only后跟
的是主语,就不用倒装结构了.
Only when the war was over in 1918 was he able to get back to work．
注意,only和所修饰的状语如果不在句首,则不倒装.