什么是 “in addition”？
in addition 是一个常用的英语连接性短语，用于引出额外的信息或补充内容，相当于中文的“此外”、“另外”或“而且”。
基本用法
in addition 通常位于句首或句中，后接逗号，再引出新信息：
- In addition, we need to consider the budget.
- She speaks French fluently. In addition, she knows Spanish and Italian.
“in addition to” 的结构
更常见的形式是 in addition to + 名词/动名词，表示“除了……之外（还）”：
- In addition to English, he studies Japanese.
- In addition to working full-time, she volunteers on weekends.
注意：in addition to 后面不能直接跟完整句子（即不能接从句），需使用名词或动名词形式。
与相似表达的区别
常与以下短语混淆，但用法略有不同：
- Moreover / Furthermore：语气更强，多用于正式写作，强调逻辑递进。
- Besides：口语中更常见，也可表示“况且”或“除此之外”。
- Also：位置灵活，但不如
in addition正式。
实用例句
- In addition to his salary, he receives a bonus every year.
- The museum is closed on Mondays. In addition, it opens late on Tuesdays.
- In addition to being a great teacher, she is also a published author.