on doing与once doing的区别为：含义不同、用法不同、词语结构不同。一、含义不同 1.on doing 释义：刚一做某事（就）。2.once doing 释义：一旦做某事。二、用法不同 1.on doing 用法：相当于as soon as引导的时间状语从句。例句：He has always been very keen on doing physical exercises....
一、词义广泛性不一样 1、on doing刚一做某事（就）2、once doing一旦做某事 二、词语结构不一样 1、on doing介词+动名词，相当于as soon as引导的时间状语从句。So, what it cannot do at home, it is intent on doing abroad.因此，它不能在国内做的事，就坚持在国外做了。2、once doing...
a production of Carmen.2.when/while/if/unless/until/though/once...+done(与主语间是被动关系),十主句Once exposed (expose) to light, the film will be damaged and get useless.3.before/after/since+doing(主动)/being done(被动),+主句A tourist was robbed after(give)a drugged orange.being ...
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10.Once being in danger of life, he would hit on the way to escape.一旦到了有生命危险的关键时刻，他总能灵机一动想出逃脱的方法。once 英 [wʌns] 美 [wʌns]adv. 一次；曾经 conj. 一旦 n. 一次，一回 短语 Once Fallen 曾经堕落 ; 片 once publishe...
Once cut off by humans,the cabbage will emit a gas and tell its neighors there may be trouble ahead.其中cut做被动,为何不说being cut off? 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 非谓语动词done的形式主要表示被动的,和已经完成了,你的being done 多了一个being则是...
1. Once you're done reading a book 这句话中的“you're done”实际上是一个省略形式，完整形式...
The research is so designed that once ___ nothing can be done to change it.A.begins B.having begun C.beginning D.begun2。An army spokensman stressed that all the soldiers had been ordered ___ clear warnings before firing any shots.A.to issue B.being issued C.to have issued D.to be...
3 : at some time in the past : formerly it was once done that way 4 : by one degree of relationship cousin once removed once 2 of 3 noun : one single time just this once once 3 of 3 conjunction : as soon as once that is done, all will be well More...