ago是不是等于before?比如ten years ago是不是等于ten years before等于before ten years

ago是不是等于before?比如ten years ago是不是等于ten years before等于before ten years ten years before 和ten years ago 有什么区别? 帮我翻译一下ten years ago和 ten years before 十天以前是ten days before还是ten days ago The doctor will be free.A .in ten minutes B.ten minutes ago C .before ten minutes The hospital has been open ____ A.for ten years before B.since ten years agoC since ten years D ten years ago before和ago可以一起用吗?比如 he became cery rich before two years ago打错了 是he became very rich before two years ago a while ago是不是等于a moment ago the day before是否等于two days ago 2days ago是否等于the day before yesterday Have you found your bike?Yes,I __ it ten mintues __ A.have found;before B.found;ago where were you后应该ten minutes before half an hour ago now just now 选哪个 ten minutes before The bady woke up ten minutes ago.的同义句 The baby ( ) ( ) ( )since ten minutes ago.是不是has been awake为什么 ten years before和ten years ago的区别?那说的不都是过去的事情吗？怎么会是一般现在时啊？ ten years ago的反义词 long before 与long ago的区别I knew Gordon __I knew you .We've been friends for nearly ten years.a.long before b.long ago ,b为什么不行 It's ten years ago ____ I came to this town.这里填的是that.请问为什么不填before?