be off 与be away有什么区别?

be off 与be away有什么区别? be off 与be away的区别 be away与be off用法上的区别 be off和be away的区别 be off,be away ,run away,get away的区别 go 、 set off、 be away、leave有何区别? 英语中go away和be away有什么区别 be away和be off? be far away ,be far from,be far away from有什么区别 tear off与tear away有什么区别,举例说明. be away=go away=leave吗?be away与go away有区别么?急用!谢谢 be away from 与be away的区别