Using 除了 (chúle)…… 以外 (yǐwài) will help you spruce up your sentences when you want to express "except", "besides", and "in addition".
Expressing "except"
Structure
"除了... (以外), 都..." (chúle... (yǐwài), dōu...) is a pattern used to express "except."
除了+noun phrase +(以外)+noun phrase+都+verb
"除了... (以外), 都..." (chúle... (yǐwài), dōu...) is a pattern used to express "except."
Examples
除了 妈妈 以外,我们 全家 都 去 香港。
The pattern can also be used to mean "in addition". An important note is that either 除了 or 以外 can be omitted from the sentence without losing its meaning.
Expressing "in addition"
Structure
"除了... (以外), 也/还..." (chúle... (yǐwài), yě/hái...) is a pattern used to express "in addition."
Examples
除了 牛肉 以外 ,她 也 很喜欢 吃 鸡肉。