by now的意思?有by now时,句子用什么时态?

by now的意思?有by now时,句子用什么时态? by now by now的同义短语, by now是什么意思? by for now by now同义短语 请问by now 和 for now的区别,用法?谢谢 英语：by now是什么时态? We by now ,get out by now我可以放句首吗 By the way ,is it open now?什么 意思 Now going to beijing by plane is cheap.改为同义句 Now ( ) ( ) beijing is cheap. by now 的中文意思是什么? 帮个忙吧!能写句例句更好啦! by.bus---by.now---by.8点.这三个的意义 简单的英语知识请问有没有 by far 或者 by now 哪一个是直到现在,到目前为止.我记得好像都是,但是在字典上没查到,字典上的by far 也是另外一个意思.纠结了. 1You musn't smoke here.保持原句意思.You ( )( ) to smoke here .2My parents have done all the work by now.改为被动语态.All the work ( ) been( ) by now. 请根据题后括号里的要求改写句子,每空一词含缩写Now going to Guangzhou by air is cheap.改为同义句.Now Guangzhou is cheap. by the I'm in California now by the ocean.朋友的信中写到,