up to now什么意思

up to now的音标：up to now的英式发音音标为：[ʌp tu: nau]up to now的美式发音音标为：[ʌp tu naʊ]...

Up to now the post of president has been largely ceremonial.到目前为止，总统一职在很大程度上只是礼仪性的。I'd like to know what caper he is up to now.我倒想知道他现在又在玩什么鬼把戏了.Up to now he's still quiet.他直到现在仍保持沉默....