“in addition to” 是一个常用的英语介词短语，意思是“除……之外（还）”。它后面不能直接跟句子（即不能接完整主谓结构），而是要接名词性成分。
一、基本结构
in addition to + 名词 / 代词 / 动名词（-ing 形式）
二、常见用法示例
- 接名词： In addition to English, she speaks French and Spanish.
- 接代词： In addition to them, several other students attended the meeting.
- 接动名词： In addition to studying, he works part-time.
- 接名词短语： In addition to the cost of tickets, you’ll need to pay for food and lodging.
三、常见错误
❌ 错误：In addition to he works hard.（不能接完整句子）
✅ 正确：In addition to working hard, he helps others.
四、小结
记住：in addition to 是介词短语，其后必须接名词性成分（包括动名词），不能直接接动词原形或完整句子。
如果想表达“除了……之外，还……”且后面是完整句子，可改用 besides 或使用 in addition to + 动名词 结构。