hard与hardly是两个无关的单词.
1 hardly 是个否定词,解释为“不,没有”------- She hardly works these days.-------她现在不上班了.
2 hard 在你的句子里是副词,解释为“大,厉害, 努力,拼命”----------it is raining hard==it is raining heavily ---------雨下得很大.
3 hard 是形容词也是副词.再说一次,hard与hardly是两个无关的单词.