形容词和副词在句中充当的语法功能不同,
1.形容词修饰名次作定语或者用在系动词后作表语.
eg.I feel comfortable after a good sleep.(作表语)
I sit in a very comfortable armchair.(作定语)
2.副词修饰形容词,动词或副词,在句中作状语.副词在句中位置很灵活,可位于句前,句中,或句尾.
eg.He speaks clearly.(clearly是副词,修饰动词speak; 副词位于句尾)
He speaks very clearly.(very是副词,修饰副词clearly ; 副词位于句中)
He is a very good speaker.(very是副词,修饰形容词good)
副词位于句首:Clearly,he is a good speaker.