It is raining.是什么结构?主系表结构吗?

It is raining.是什么结构?主系表结构吗? it is raining heavily,是不是主系表结构,还是主语+不及物动词 It is raining heavly 是主谓结构么 请问It was raining hard.的语法分析,hard 是什么结构? 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 词性是什么下雨应该是动词吧 it is raining hard 的同义句是什么?这是一道英语填空题`任务二:同义句转换.3.It is raining hard. It is raining __________. it is raining,as usual it is raining,as usual It is raining cats and It is raining cats and It is raining now.It_____yesterday. It is raining cats and It is raining _____ outside. 英译汉;It is raining heavily. It is raining ____(hard). it is raining again it was raining again区别