这是不一定的.
你记住,如果一个单词是单音节或者双音节,则不用more,比如fat,he is fatter than me.再比如busy i am busier than yesterday.
如果一个单词是多音节,比如expensive,就用more,this pen is more expensive than that one.
记住这两点就明白了.
之所以用much,是强调的作用.比如两个句子,you are more intelligent than me .你比我更聪明 you are much more intelligent than me .你比我更加聪明.