It began to rain,so he stopped____the windows.(close)

It began to rain,so he stopped____the windows.(close) 英语中逗号It began to rain ,so we had to stay here.It began to rain so we had to stay here.这两个句子哪个对啊?为什么?在什么情况下,连词前面加逗号呢? it began to rain,句中it如何理解?麻烦好心人回答.while they are talking it began to rain. i had hardly go home when it began to rain. We 什么 football when it began to rain. They stopped_____(play)football because it began to rain We _____(play) games when it began to rain. When/While it began to rain ,I was watching TV Suddenly it began to rain 分析句子成分,主谓宾定状补, He was halfway home when it began to rain. It began to rain _____A.heaveyB.heavilyC.hardlyD.big It began to rain.They stopped ___(go)home he （）stop working it began to rain it began to rain 和 it had begun to rain 有什么区别 Suddenly it began to rain Suddenly ——?it——?began——?to rain——?划分句子成分 The workers stopped working when it began to rain.同意句The workers____ ______ ______ when it began to rain. We went mountain climbing yesterday.It began to rain just when we got to the foot of the hill.So wehad to go home early.的意思是 Suddenly it began to rain.to rain是什么句子成分,请说出理由,