请问It was raining hard.的语法分析,hard 是什么结构?

it was raining really hard It was raining hard 是什么意思 Although it was raining hard,Bill still___ It was raining hard all day it is raining hard 的同义句是什么? It's raining hard outside.里的hard是什么用法?3Q It was raining hard,they could not work in the fields.请问哪里错了 the plane l____safely at last though it was raining hard It was raining hard when the plane a___ in Shanghai The boys kept playing football _________ it was raining hard It was raining hard when Ben ___to o school (go) It was raining hard when I got home last night.