Suddenly it began to rain 分析句子成分,主谓宾定状补,

问题描述:

Suddenly it began to rain 分析句子成分,主谓宾定状补,

suddenly 是状语it 是形式主语begin 是谓语答案满意吗?to rain呢???begin to do 是固定搭配begin to rain 叫起来做谓语成分望采纳