when it announced it was reneging on a longstanding commitment to abide by the strict nuclear regulations这个 reneging 是进行时还是 be + adj +介词 形式啊 看到 动词ing 我就很纠结 不知道是什么形式 如果是 be + adj +介

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whenitannounceditwasrenegingonalongstandingcommitmenttoabidebythestrictnuclearregulations这个reneging是

when it announced it was reneging on a longstanding commitment to abide by the strict nuclear regulations这个 reneging 是进行时还是 be + adj +介词 形式啊 看到 动词ing 我就很纠结 不知道是什么形式 如果是 be + adj +介
when it announced it was reneging on a longstanding commitment to abide by the strict nuclear regulations
这个 reneging 是进行时还是 be + adj +介词 形式啊 看到 动词ing 我就很纠结 不知道是什么形式
如果是 be + adj +介词 那还有其他我们经常见的这种吗?举个例子啊

when it announced it was reneging on a longstanding commitment to abide by the strict nuclear regulations这个 reneging 是进行时还是 be + adj +介词 形式啊 看到 动词ing 我就很纠结 不知道是什么形式 如果是 be + adj +介
进行时和 be +adj +prep 其实是一个意思呀.就好比一个人的双重身份 你在家里是女儿 ,在学校是学生一样.
好比 ：i am running .在句子结构上来说 这是一个主系表的结构 也就是 主语 加联系动词 加表语形容词running （进行分词做形容词）的用法 .
在句子时间状态来看,我们称为现在进行时态.
也即是说 这个句子 有2个身份 结构上 主系表 时间上 现在进行.
回到你的这个句子里 无非是一个WHEN 时间状语从句中嵌套了一个 ANNOUNCED 后的宾语从句 it was

这里是一个进行时的形式。renege on 可以与go back on 互换，表示背弃，违背之意。我不知道你的前后文，所以不知道it在此指代什么。it这种行为正在一步一步背弃长期坚持的严格核武器的管理条约。
V-ing形式有三种含义，一是表示主动、进行的分词形式；另一种是动词后加了ing表示形容词的含义；动名词做主语。在记单词的时候留意词性。
语法中呢，动词的ing形式可以做主语、...

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这里是一个进行时的形式。renege on 可以与go back on 互换，表示背弃，违背之意。我不知道你的前后文，所以不知道it在此指代什么。it这种行为正在一步一步背弃长期坚持的严格核武器的管理条约。
V-ing形式有三种含义，一是表示主动、进行的分词形式；另一种是动词后加了ing表示形容词的含义；动名词做主语。在记单词的时候留意词性。
语法中呢，动词的ing形式可以做主语、宾语、宾语补足语和主语补足语。我举个例子吧
Beating a child will do more harm than good.在这个句子中，beating a child是动名词短语作主语。
I heard her singing in the next room.此句中呢，singing为her的补足语，即宾补。
New laws will soon replace existing legislation.这句中的existing是形容词，表示现行的，现存的意思。
建议你看看语法吧

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has it been announced when the plane is to take off中为什么用when 英语求助Has it been announced when the planes are to take off求句子成分分析 The result will be announced( ) the programmes.Don't miss it.A.when B.while C.as D.during It is known to all that light travels in straight lines.When the plane is to take off has not been announced . 是什么从句及句子成分 it was announced that only when the fire was under control ( )to return their homes.这道题我没看懂您的解释,可以再细点说说吗 it was announced that only when the fire was under control .to return to their homes怎么能看出是个虚拟啊, 求详细过程并分析句子成分?It was announced that only when the fire was under control________to ...求详细过程并分析句子成分?It was announced that only when the fire was under control________to return to their homes.A．the resid 考研英语翻译问题 谢谢了The company, a major energy supplier in New England, provoked justified outrage in Vermont last week when it announced it was reneging on a longstanding commitment to abide by the strict nuclear regulations.问题一 这里为什么不能用thathas_____ been announced when the new road is to be opened to traffic?A that B it 我知道这里it是形式主语 ,但想叫大家分析一下that为什么不能放进这里? Has it been announced ——?A.when are the planes to take offB.that are the plans to take offC.where are the planes to take offD.when the planes ate to take off When it ___ (rain) when will it be when it comes When did it start? When was it taken Smile when it hurts When was it built? when is it gonna