is done和is being done 有什么区别,不都是被动吗

is done和is being done 有什么区别,不都是被动吗 being done和done用法的疑问Being examed twice a year is a basic rule.这句用being done为什么不能用done? XXX is being done的用法 there is wrok to be done 和there is work to being done语法是一样的吗? is done,was done的被动语态是?is being done,was being done,has been done,had been done,will be done的被动语态是? All this is being done in the name ofsecurity这里being done是什么用法 being done 与am/is/are/being done 的这个被动语态有什么区别么 am/is/are+being+done这个结构中为什么要being+done? what is being done to the clavichord?翻译哈 what he has done is worth being spoken highly of being done前面要加 is was 吗 非谓语的时态及其语态一般现在时:am/is/are done 一般过去时：was/were done 一般将来时：shall/will be done 一般过去将来时：should/would be done 现在进行时：is/am/are being done 过去进行时：was/were being don done is is being done和will be done有什么区别?The English evening party ____ in the school hall next Saturday.A.is held B.is being held C.will be held D.has been held 求为什么 what is done is done All this is being done in the name ofsecurity这里being是什么用法 _____ this experiment is not difficult.A.Having done B.Being done C.To do D.Done what is done is