独立主格 the train is coming ,i have to say goodbye to you .转换成独立主格结构

独立主格 the train is coming ,i have to say goodbye to you .转换成独立主格结构 什么是独立主格?she is mean,to say the least.这样属于独立主格么? all flights ______ because of the srom they decided to take the train为什么用 baving been canceled ,独立主格?怎么判断的阿? The train having gone,we had to wait another day.前半句话是独立主格吧 用的是什么时态?拜托英语水平好的来回答下 The train having gone, we had to wait another day.前面用的是现在分词的完成时态吗?前面的句子是独立主格 没错啊 All the flights____because of the snowstorm,we had to take the train instead.A.were canceled B.had been canceled C.having canceled D.having been canceledD独立主格为啥不是B 不用独立结构不行吗? if the weather is fine tomorrow改成独立主格if the weather is fine tomorrow改成独立主格：the weather being fine tomorrow还是the weather to be fine tomorrow?为什么？ 急求!能否改成独立主格 if we see city on the top of hill, the city is beautiful. _______,we missed our train the day when we were back to parisA with the bus lateB the bus to be lateC the bus being lateD the bus was late答案是'C'为什么'怎么判断是不是独立主格' 独立主格结构是什么? 独立主格结构详解 什么是 独立主格 结构 什么是独立主格结构? 英语独立主格结构 独立主格结构详解 什么是独立主格 英语 英语中的独立主格 能否详解独立主格?