fill是动词,full是形容词,这是本质区别。动词可以做谓语,可以变不定式、动名词,分词等形式。常用搭配的用法:be full of 强调状态,……里满是水等 be filled with... 有点强调动作
fill 是动词be filled with eg:The cup is filled with water。或说 We fill the cup with water。
full是形容词 be full of eg:The bag is full of books
fill with
full of