`addition` 后面可以跟不同的词性，具体取决于你想表达的意思：

1. 名词：

`in addition to` 后面跟名词。例如：In addition to English, I like Chinese as well.

2. 动名词（动词的-ing形式）：

`in addition to` 后面跟动名词。例如：In addition to my weekly wage, I got a lot of tips.

3. 介词短语：

`with the addition of` 后面跟名词或动名词。例如：With the addition of the new features, the software is now more user-friendly.

请根据你的需要选择合适的搭配