having been done为什么不能做谓语呢
having been done为什么不能做谓语呢
having been done 为什么不能做定语?
非谓语动词做定语时可以用那些结构?having done ,having been done ,having been
为什么have been能做谓语而having been不行呢?
非谓语动词用法to have done/having done/to have been done/having bee
having been done能做定语吗?
非谓语动词中being done ,done,having been done,have done 有什么区别
英语非谓语动词中有having been done,那有没having done形式?
Having been done ,done,having done
非谓语动词having been done,to have been done什么时候用?
having done 为什么不能作后置定语
有关非谓语的.(doing、having done、having been done、done……不能用的地方)