It was raining.与It is raining.这两句有什么不同意思?

it is raining again it was raining again区别 it looks as if it is raining什么意思 it was raining all the time 什么意思 It is very raining it is raining是什么意思? It is raining (heavy). It is raining there.对“raining"提问 It is raining now.raining 词性是什么 it's raining,raining什么词性. It is raining hard 用什么提问 it was raining是什么时态 it was raining really hard