一道关于only倒装的选择

问题描述:

一道关于only倒装的选择
-So hard has he worked in the past few months that he has made great progress in English.
-I can see that,only a few mistakes______in this exam.
he made.为什么不是倒装.

这里已经是倒装了,only后跟的a few mistakes是made的宾语,把宾语提前了.
only后跟状语才需要主句倒装
例如
Only in this way can you learn English well.