hard的词性：hard可作为形容词和副词两种词性。当hard作为形容词时，中文意思为“坚固的”、“结实的”、“难以回答的”、“艰难的”；当hard作为副词时，中文意思为“努力地”、“猛力地”、“彻底认真地”。
hard的基本含义及用法介绍
1、作为形容词时，意为坚固的;坚硬的;结实的;难做的;难懂的;难以回答的;困苦的;艰苦的;艰难的。
例句：Diamonds are the hardest known mineral.
钻石是已知的最坚硬的矿石。
It is hard to believe that she's only nine.
很难相信她只有九岁。
Times were hard at the end of the war.
战争后期生活很艰苦。
It's hard work shovelling snow.
铲雪是个苦活儿。
He's hard at work on a new novel.
他正努力忙着写一本新小说。
He gave the door a good hard kick.
他狠狠踢了一下门。
My father was a hard man.
我父亲是个不讲情面的人。
Come and get me if you think you're hard enough.
你要是觉得自己有种，就冲着我来吧。
Is there any hard evidence either way?
不管正反，有什么确凿证据吗？
2、作为副词时，意为努力地;费力地;艰难地;猛力地;猛烈地;彻底认真地。
例句：She tried her hardest not to show how disappointed she was.
她竭力不流露出自己有多失望。
We thought long and hard before deciding to move house.
我们经过长久慎重的考虑之后才决定搬家。
Turn hard right at the next junction.
在下个路口处向右急转弯。
It was raining hard when we set off.
我们出发时正下着大雨。
