hard 作形容词,意为“困难的,艰苦的,硬的”;
作副词,意为“努力地,猛烈地”。hardly 为副词,意为“几乎不”。
The ground is too hard to dig. I can hardly understand them.
It’s raining hard. The people can hardly go outside.
As for homework , most students do homework every day .
as for...意思是“至于;关于”,+名词、代词或动词的-ing 形式(即动名词)。
As for him,I never want to see him here.至于他,我永远不希望在这里见到。
As for the story,you'd better not believe it.关于那故事,你最好不要相信