on an on-going bassis 怎么翻译? 是"持续不断" 的意思还是"在现有的基础之上"?

they are going on an extended holiday to australia,going We are going to go on an outing 还是We are going to an outing Wekeep on going on and We keep on going on and on an interesting game of chess going on between two old men.这里为什么要用going? what is going on what's going on... going on 什么意思? Everything is going on! What's going on? What’s going on? What's going on What’s going on. A heated debate has been going on for and finally an agreement has been reached on the practical 翻 on an on-going bassis 怎么翻译? 是持续不断 的意思还是在现有的基础之上? as time going on 还是with time going on? There ____ an interesting play on TV tonight.A are going to haveB is going to beC is going to haveD are going to be There is going to have an English party on next Sunday evening(改错两处)