前者是形容词，后者是副词
形容词在句中作定语, 表语, 宾语，补语。
She is a good student, and she works hard.
她是一个好学生,她学习努力。
This bike is expensive.
这辆自行车很贵。
I am sorry, I'm busy now.
对不起,我现在很忙。
Have you got everything ready for the meeting?
你为这次会议做好准备吗?
副词是一种用来修饰动词,形容词,全句的词,说明时间,地点,程度,方式等概念。 副词在句中可作状语,表语,短语。
He works hard.
他工作努力。
You speak English quite well.
你英语讲的很好。
Is she in ?
她在家吗?
Let's be out.
让我们出去吧。
Food here is hard to get.
所以应该是How carefully the girl does her homework 。
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