在Up to now 之类的句型里 ,什么时候用完成进行时,什么时候用现在完成时比如说 Up to now I have been reading this book.和 Up to now I have read this book.是不是 ,只有一个区别就是前者包含还要读下去的意

在Up to now 之类的句型里 ,什么时候用完成进行时,什么时候用现在完成时比如说 Up to now I have been reading this book.和 Up to now I have read this book.是不是 ,只有一个区别就是前者包含还要读下去的意 新概念英语第二册第五课 up to now 自学导读里说 up to now =still now =until now但是30页的一个句子里,用了up still now.那么到底是up to now =still now =until now还是up to now =up still now =up until now Up to now的用法 up till now和up to now的区别jiji up to now 和 up till now 的区别up to now和up till now的区别. up to now的中文意思是什么? UP to now up to now 造句 up to now 造句 (┬＿┬)有一首英文歌!在88.7老放,男声,歌词里有so wake up wake up to me.还有here we go.名字听着像step the fire之类的~阿阿阿!一定要帮我阿> just now ,so far ,up to now now it's up to up to now什么意思? 用 up to now 造句 till（up to ）now 的用法及造句是? so far和up to now的区别 till now ,up to now,so far一样吗 用在什么时态? up till now 与up to now区别