before引导的从句 It was a long time ( ) I got to sleep again.A when B while C until D before为什么阿!请给理由,

before引导的从句 It was a long time ( ) I got to sleep again.A when B while C until D before为什么阿!请给理由, before引导的状语从句例子 It was a major development that the Africans were reaching out to China.that 引导的是什么从句? What it was to become was uncertain until between 4.5 and 3.8 billion years when the dust settledinto a solid globe.when引导的这个从句是什么句子? 以before或after引导的状语从句有问!进入帮手例：It will be four days before they come back哪句系主句?哪名是从句? put the book where it was.where引导的句子是什么从句 one evening when it was so warm中when引导的什么从句 It seemed that he was hanppy that引导什么从句? it引导时间状语从句与it引导主语从句有什么区别比如It was October 1st,1949 when the People's Republic of China was founded.此句为什么是it引导的时间状语从句而不是it做形式主语引导主语从句,when在从句中 It was quite a long time before he realized his mistake.before he realized his mistake是什么从句 it引导的形式主语从句解析? It happens that引导的是什么从句? before引导的从句用一般现在时主句用什么时态 before引导的主句过去式,从句应用什么时态 怎么分析Jack said it was just what was worrying him most .what引导的是什么从句 Firemen had been fighting the forest fire before they could get it under control.这里的before是什么意思?在---之前?它引导的是不是状语从句? The school is no longer what it was before这句话的从句部分是什么 It's a question how he dId it.how引导的是什么从句?