Nothing could have been more annoying.这里用的是现在完成进行式表示的是什么意思?

Nothing could have been more annoying.这里用的是现在完成进行式表示的是什么意思? nothing could have been more annoying Nothing could have been more annoying. 时态Nothing could have been more annoying Nothing could have been more annoying.这句话里加have Nothing could have been more annoying是什麼时态? nothing could have been more annoying是什麽意思 Nothing could have been more annoying.请帮我把这句话改成there be句型. 英语翻译统领的段落供高手参考There's nothing more annoying than have someon have been 是现在完成进行时的标志,那为什么i have been to korea twice 是现在完成时 have been done 什么东西?have been doing是现在完成进行时的被动语态嘛? 现在完成进行时的被动语态结构是have been +过去分词还是have been+doing