by now.until now.so far.up to now.till now.是不是都可用于现在完成时的未完成用法?是不是都是一段时间的时间状语或是与现在时间相连的时间状语?

by now.until now.so far.up to now.till now.是不是都是一段时间的时间状语或是与现在时间相连的时间状语? by now.until now.so far.up to now.till now.是不是都可用于现在完成时的未完成用法?是不是都是一段时间的时间状语或是与现在时间相连的时间状语? by now From then until now, until now与so far的区别?until now可以放在句首吗?可以的话是否要加逗号? until now 和up until now 有什么区别啊 by now是什么意思? by for now by now同义短语 up to this point 什么意思?So far:⑴until now; ⑵up to this ponit so far/up to now/ until now/的区别?请问高手,so far/up to now/ until now/until this time 这4个短语都作‘迄今,到现在为止’解时有何区别?你认为无区别，我觉得至少：1. I never realized I loved you until now. 我 just now ,so far ,up to now now now till now 和 until now 用法的区别? Until I know you just now really 英语：by now是什么时态? We by now ,get out