我的english老師教我3個音以上才可以加most or more(adj)，她對不對？

對呀！！響比較兩樣野果時，３個音既字前面會用more
例如beautiful(beau/ ti/ ful)，我地會用more beautiful，無beautifuler架
e.g. Lily is more beautiful than Sally.
tall呢，因為得一個音(tall)，所以就有taller
e.g. John is taller than Jack.

至於most同more，好易分jei
如果有比較，有兩樣野，就用more/ +er
e.g. Lily is more beautiful than Sally.
e.g. John is taller than Jack.
如果得一樣野，而果樣野係最ｘ(e.g.最beautiful)就用most/+est ,而且前面要加the
e.g. Lily is the most beautiful girl.
e.g. John is the tallest boy.

你english錯la! 2個音以上已經可以加most or more la !!!!!!!

2個音(有d要用)/3個音以上 = most/more

2個音以下 = er/est

3個音以上的確是應該加上most和more,
例:beautiful 改成
more beautiful,most beautiful