it began to rain before she took a taxi中took该怎么解释啊?

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,so he stopped____the windows.(close) 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. Suddenly it began to rain.to rain是什么句子成分,请说出理由, they wre on ____ way to school when it began to rain.( they )应是they were on ____ way to school when it began to rain (they) l had to run back home because it began to rain(对划线部分提问,划 because it began to rain）