Meanwhile和At the same time的区别

Meanwhile和At the same time的区别 at the same time/moment,meanwhile三者有什么区别 meanwhile 和 at the same time的区别有没有一个比另一个更书面?可不可以互换? 关于英语单词meanwhile好像中文里的“同时”并不能翻译成meanwhile,而应该是at the same time.那请问meanwhile是什么意思呢? meanwhile和at the same time 可以像when 一样放在句中用吗它们和when 有什么区别简单问一句,meanwhile 能引导时间状语从句吗 meanwhile与at the same timemeanwhile 与此同时 at the same time 同时 有啥不同吗? Sam is good at playing the piano.改为同义句Sam------- --------- the piano-------.每空一词 Sam和Bob在谈论昨天所做的事情,阅读他们对话,写出Sam昨天所做的事.Sam:Hello,Bob.Bob:Hello,Sam.I callde you a lot yesterday,Where were you?Sam:Well,at 2:30,I was at the library.I read some magazines and books there.A 3:40 ,I was a Sam和Bob在谈论昨天所做的事情,阅读他们对话,写出Sam昨天所做的事.短文：Sam:Hello,Bob.Bob:Hello,Sam.I callde you a lot yesterday,Where were you?Sam:Well,at 2:30,I was at the library.I read some magazines and books there.A 3:40 meantime和meanwhile个是什么意思 look at the blackboard,sam 改成否定句 meanwhile和thoughThe struggle began earlier than expect,,as our team center was suspended for the season.为什么填though?meanwhile不行? Sam is good at playing the piano.(改成同义句）Sam ?the piano?各位大哥大姐速度啊! in the meanwhile什么意思及同义词 in the meanwhile什么意思及同义词 meanwhile 和meantime 的用法区别 电脑有好处,同时电脑也有坏处.这个“同时”,用英文怎么说?at the same time?in the mean time?meanwhile?还是别的? last night mr.crook didn't come back at the usual time.___,he met some friends and stayedout until midnight.为什么用instead而不是meanwhile