work hard 这里是work动词.hard是副词
hard work 这里是hard形容词,work 是名词
hard-working 整体是个形容词
I need work hard to gain money
Doing sth requires hard work
或者Doing sth is considered as hard work
she is a hard-working student
work hard 这里是work动词.hard是副词
hard work 这里是hard形容词,work 是名词
hard-working 整体是个形容词
I need work hard to gain money
Doing sth requires hard work
或者Doing sth is considered as hard work
she is a hard-working student