首先说它们都是副词(除such之外)都可修饰形容词和副词.但它们又各有自己的独特之处.so修饰形容词和副词除副词rather和too 都能修饰. too 同上 very同上但very可以和最高级或the last , the first . own连用.如This is my very own thing. such是形容词修饰名词.如such a good picture quite修饰名词,动词,形容词和副词.quite a man I quite agree with you. 当名词前有another, a few时只用quite来修饰.如 It's quite another thing. quite与the thing ,the same连用时不能用very代替.