时态Nothing could have been more annoying上下文：I was busy mixing butter and flour and my hands were soon covered with sticky pastry .At exactly that moment ,the telephone rang .Nothing could have been more annoying最后一句什么时态?前

Nothing could have been more annoying是什麼时态? nothing could have been more annoying请问 这个句子中的HAVE BEEN 是现在完成时么?为什么这个句子要用这种时态呢? Nothing could have been more annoying.这句话里加have 时态Nothing could have been more annoying上下文：I was busy mixing butter and flour and my hands were soon covered with sticky pastry .At exactly that moment ,the telephone rang .Nothing could have been more annoying最后一句什么时态?前 nothing could have been more annoying是什麽意思 nothing could have been more embarrassed还是embarrassing要原因 Nothing could have been more annoying.翻译并解释为什么用could have been They could do nothing but ___ (wait) at home什么时态 Nothing brave nothing have. Nothing less than a miracle could have saved him.为什么说：could have saved 这是什么语法呢? have nothing there was nothing else he could do.这是过去时态,如果换成现在时态呢,是不是there is nothing else he can do.又或者可以是我别无选择,there is nothing else I can do. Could you remember who I was?Can you heal my pain?I have got nothing to remember,nothing to forget could 用于什么时态 I could是什么时态 Nothing could have been more annoying.请帮我把这句话改成there be句型. could I have some more bread.I have a dream.请问下这两个句子的时态?和结构? Nothing could be better.翻译